@article{Bak_1982, author = {Bak, P}, title = {Commensurate phases, incommensurate phases and the devil's staircase}, journal = {Reports on Progress in Physics}, publisher = {IOP Publishing}, year = {1982}, month = {June}, number = {6}, volume = {45}, pages = {587--629}, url = {https://doi.org/10.1088%2F0034-4885%2F45%2F6%2F001}, doi = {10.1088/0034-4885/45/6/001} } @article{Bareille_2014_Momentum-resolved, author = {Bareille, C. and Boariu, F. L. and Schwab, H. and Lejay, P. and Reinert, F. and Santander-Syro, A. F.}, title = {Momentum-resolved hidden-order gap reveals symmetry breaking and origin of entropy loss in {URu$_\text2$Si$_\text2$}}, journal = {Nature Communications}, publisher = {Springer Science and Business Media LLC}, year = {2014}, month = {7}, number = {1}, volume = {5}, pages = {4326}, url = {https://doi.org/10.1038%2Fncomms5326}, doi = {10.1038/ncomms5326} } @article{Berg_2009b, author = {Berg, Erez and Fradkin, Eduardo and Kivelson, Steven A and Tranquada, John M}, title = {Striped superconductors: how spin, charge and superconducting orders intertwine in the cuprates}, journal = {New Journal of Physics}, publisher = {IOP Publishing}, year = {2009}, month = {November}, number = {11}, volume = {11}, pages = {115004}, url = {https://doi.org/10.1088%2F1367-2630%2F11%2F11%2F115004}, doi = {10.1088/1367-2630/11/11/115004} } @article{Bourdarot_2010, author = {Bourdarot, Frederic and Hassinger, Elena and Raymond, Stephane and Aoki, Dai and Taufour, Valentin and Regnault, Louis-Pierre and Flouquet, Jacques}, title = {Precise Study of the Resonance at {$Q_0=(1,0,0)$} in {URu$_2$Si$_2$}}, journal = {Journal of the Physical Society of Japan}, publisher = {Physical Society of Japan}, year = {2010}, month = {June}, number = {6}, volume = {79}, pages = {064719}, url = {https://doi.org/10.1143%2Fjpsj.79.064719}, doi = {10.1143/jpsj.79.064719} } @article{Broholm_1991, author = {Broholm, C. and Lin, H. and Matthews, P. T. and Mason, T. E. and Buyers, W. J. L. and Collins, M. F. and Menovsky, A. A. and Mydosh, J. A. and Kjems, J. K.}, title = {Magnetic excitations in the heavy-fermion superconductor {URu$_2$Si$_2$}}, journal = {Physical Review B}, publisher = {American Physical Society (APS)}, year = {1991}, month = {June}, number = {16}, volume = {43}, pages = {12809--12822}, url = {https://doi.org/10.1103%2Fphysrevb.43.12809}, doi = {10.1103/physrevb.43.12809} } @book{Chaikin_1995, author = {Chaikin, Paul M. and Lubensky, Tom C.}, title = {Principles of condensed matter physics}, publisher = {Cambridge University Press}, year = {1995}, edition = {1st}, isbn = {9780511813467} } @article{Chandra_2013_Hastatic, author = {Chandra, Premala and Coleman, Piers and Flint, Rebecca}, title = {Hastatic order in the heavy-fermion compound {URu$_2$Si$_2$}}, journal = {Nature}, publisher = {Springer Science and Business Media LLC}, year = {2013}, month = {January}, number = {7434}, volume = {493}, pages = {621--626}, url = {https://doi.org/10.1038%2Fnature11820}, doi = {10.1038/nature11820} } @article{Chandra_2013_Origin, author = {Chandra, Premala and Coleman, Piers and Flint, Rebecca}, title = {Origin of the Large Anisotropy in the {$\chi_3$} Anomaly in {URu$_2$Si$_2$}}, journal = {Journal of Physics: Conference Series}, publisher = {IOP Publishing}, year = {2013}, month = {7}, volume = {449}, pages = {012026}, url = {https://doi.org/10.1088%2F1742-6596%2F449%2F1%2F012026}, doi = {10.1088/1742-6596/449/1/012026} } @article{Choi_2018, author = {Choi, J. and Ivashko, O. and Dennler, N. and Aoki, D. and von Arx, K. and Gerber, S. and Gutowski, O. and Fischer, M. H. and Strempfer, J. and Zimmermann, M. v. and Chang, J.}, title = {Pressure-induced rotational symmetry breaking in {URu$_2$Si$_2$}}, journal = {Physical Review B}, publisher = {American Physical Society (APS)}, year = {2018}, month = {December}, number = {24}, volume = {98}, pages = {241113(R)}, url = {https://doi.org/10.1103%2Fphysrevb.98.241113}, doi = {10.1103/physrevb.98.241113} } @article{Cricchio_2009, author = {Cricchio, Francesco and Bultmark, Fredrik and Gr{\aa}n{\"a}s, Oscar and Nordstr{\"o}m, Lars}, title = {Itinerant Magnetic Multipole Moments of Rank Five as the Hidden Order in {URu$_2$Si$_2$}}, journal = {Physical Review Letters}, publisher = {American Physical Society (APS)}, year = {2009}, month = {9}, number = {10}, volume = {103}, pages = {107202}, url = {https://doi.org/10.1103%2Fphysrevlett.103.107202}, doi = {10.1103/physrevlett.103.107202} } @article{deVisser_1986_Thermal, author = {de Visser, A. and Kayzel, F. E. and Menovsky, A. A. and Franse, J. J. M. and van den Berg, J. and Nieuwenhuys, G. J.}, title = {Thermal expansion and specific heat of monocrystalline {URu$_2$Si$_2$}}, journal = {Physical Review B}, publisher = {American Physical Society (APS)}, year = {1986}, month = {12}, number = {11}, volume = {34}, pages = {8168--8171}, url = {https://doi.org/10.1103%2Fphysrevb.34.8168}, doi = {10.1103/physrevb.34.8168} } @article{Garel_1976, author = {Garel, T and Pfeuty, P}, title = {Commensurability effects on the critical behaviour of systems with helical ordering}, journal = {Journal of Physics C: Solid State Physics}, publisher = {IOP Publishing}, year = {1976}, month = {May}, number = {10}, volume = {9}, pages = {L245--L249}, url = {https://doi.org/10.1088%2F0022-3719%2F9%2F10%2F001}, doi = {10.1088/0022-3719/9/10/001} } @article{Ghiringhelli_2012, author = {Ghiringhelli, G. and Le Tacon, M. and Minola, M. and Blanco-Canosa, S. and Mazzoli, C. and Brookes, N. B. and De Luca, G. M. and Frano, A. and Hawthorn, D. G. and He, F. and Loew, T. and Sala, M. Moretti and Peets, D. C. and Salluzzo, M. and Schierle, E. and Sutarto, R. and Sawatzky, G. A. and Weschke, E. and Keimer, B. and Braicovich, L.}, title = {Long-Range Incommensurate Charge Fluctuations in {(Y, Nd)Ba$_2$Cu$_3$O$_{6+x}$}}, journal = {Science}, publisher = {American Association for the Advancement of Science}, year = {2012}, month = {August}, number = {6096}, volume = {337}, pages = {821--825}, url = {https://science.sciencemag.org/content/337/6096/821}, doi = {10.1126/science.1223532}, issn = {0036-8075} } @article{Ghosh_2020_One-component, author = {Ghosh, Sayak and Matty, Michael and Baumbach, Ryan and Bauer, Eric D. and Modic, K. A. and Shekhter, Arkady and Mydosh, J. A. and Kim, Eun-Ah and Ramshaw, B. J.}, title = {One-component order parameter in {URu$_2$Si$_2$} uncovered by resonant ultrasound spectroscopy and machine learning}, journal = {Science Advances}, publisher = {American Association for the Advancement of Science (AAAS)}, year = {2020}, month = {3}, number = {10}, volume = {6}, pages = {eaaz4074}, url = {https://doi.org/10.1126%2Fsciadv.aaz4074}, doi = {10.1126/sciadv.aaz4074} } @article{Ginzburg_1961_Some, author = {Ginzburg, Vitaly Lazarevich}, title = {Some Remarks on Phase Transitions of the Second Kind and the Microscopic theory of Ferroelectric Materials}, journal = {Soviet Physics, Solid State}, year = {1961}, number = {9}, volume = {2}, pages = {1824--1834}, url = {https://ci.nii.ac.jp/naid/10010072128/} } @article{Guida_1998_Critical, author = {Guida, R. and Zinn-Justin, Jean}, title = {Critical exponents of the {$N$}-vector model}, journal = {Journal of Physics A: Mathematical and General}, publisher = {IOP Publishing}, year = {1998}, month = {10}, number = {40}, volume = {31}, pages = {8103--8121}, url = {https://doi.org/10.1088%2F0305-4470%2F31%2F40%2F006}, doi = {10.1088/0305-4470/31/40/006} } @article{Harima_2010, author = {Harima, Hisatomo and Miyake, Kazumasa and Flouquet, Jacques}, title = {Why the Hidden Order in {URu$_2$Si$_2$} Is Still Hidden---One Simple Answer}, journal = {Journal of the Physical Society of Japan}, publisher = {Physical Society of Japan}, year = {2010}, month = {March}, number = {3}, volume = {79}, pages = {033705}, url = {https://doi.org/10.1143%2Fjpsj.79.033705}, doi = {10.1143/jpsj.79.033705} } @misc{Harrison_2019_Hidden, author = {Harrison, Neil and Jaime, Marcelo}, title = {Hidden valence transition in {URu$_\text2$Si$_\text2$}?}, year = {2019}, month = {2}, url = {http://arxiv.org/abs/1902.06588v2}, archiveprefix = {arXiv}, eprint = {1902.06588v2}, eprintclass = {cond-mat.str-el}, eprinttype = {arXiv}, primaryclass = {cond-mat.str-el} } @article{Hassinger_2008, author = {Hassinger, E. and Knebel, G. and Izawa, K. and Lejay, P. and Salce, B. and Flouquet, J.}, title = {Temperature-pressure phase diagram of {URu$_2$Si$_2$} from resistivity measurements and ac calorimetry: Hidden order and {Fermi}-surface nesting}, journal = {Physical Review B}, publisher = {American Physical Society (APS)}, year = {2008}, month = {March}, number = {11}, volume = {77}, pages = {115117}, url = {https://doi.org/10.1103%2Fphysrevb.77.115117}, doi = {10.1103/physrevb.77.115117} } @article{Hassinger_2010, author = {Hassinger, E. and Knebel, G. and Matsuda, T. D. and Aoki, D. and Taufour, V. and Flouquet, J.}, title = {Similarity of the {Fermi} Surface in the Hidden Order State and in the Antiferromagnetic State of {URu$_2$Si$_2$}}, journal = {Physical Review Letters}, publisher = {American Physical Society (APS)}, year = {2010}, month = {November}, number = {21}, volume = {105}, pages = {216409}, url = {https://doi.org/10.1103%2Fphysrevlett.105.216409}, doi = {10.1103/physrevlett.105.216409} } @article{Haule_2009, author = {Haule, Kristjan and Kotliar, Gabriel}, title = {Arrested {Kondo} effect and hidden order in {URu$_2$Si$_2$}}, journal = {Nature Physics}, publisher = {Springer Science and Business Media LLC}, year = {2009}, month = {September}, number = {11}, volume = {5}, pages = {796--799}, url = {https://doi.org/10.1038%2Fnphys1392}, doi = {10.1038/nphys1392} } @article{Hornreich_1980, author = {Hornreich, R. M.}, title = {The {Lifshitz} point: Phase diagrams and critical behavior}, journal = {Journal of Magnetism and Magnetic Materials}, publisher = {Elsevier BV}, year = {1980}, month = {January}, volume = {15-18}, pages = {387--392}, url = {https://doi.org/10.1016%2F0304-8853%2880%2991100-2}, doi = {10.1016/0304-8853(80)91100-2} } @article{Hoshino_2013_Resolution, author = {Hoshino, Shintaro and Otsuki, Junya and Kuramoto, Yoshio}, title = {Resolution of Entropy {$\ln\sqrt2$} by Ordering in Two-Channel {Kondo} Lattice}, journal = {Journal of the Physical Society of Japan}, publisher = {Physical Society of Japan}, year = {2013}, month = {4}, number = {4}, volume = {82}, pages = {044707}, url = {https://doi.org/10.7566%2Fjpsj.82.044707}, doi = {10.7566/jpsj.82.044707} } @article{Ikeda_1998_Theory, author = {Ikeda, Hiroaki and Ohashi, Yoji}, title = {Theory of Unconventional Spin Density Wave: A Possible Mechanism of the Micromagnetism in {U}-based Heavy Fermion Compounds}, journal = {Physical Review Letters}, publisher = {American Physical Society (APS)}, year = {1998}, month = {10}, number = {17}, volume = {81}, pages = {3723--3726}, url = {https://doi.org/10.1103%2Fphysrevlett.81.3723}, doi = {10.1103/physrevlett.81.3723} } @article{Ikeda_2012, author = {Ikeda, Hiroaki and Suzuki, Michi-To and Arita, Ryotaro and Takimoto, Tetsuya and Shibauchi, Takasada and Matsuda, Yuji}, title = {Emergent rank-5 nematic order in {URu$_2$Si$_2$}}, journal = {Nature Physics}, publisher = {Springer Science and Business Media LLC}, year = {2012}, month = {June}, number = {7}, volume = {8}, pages = {528--533}, url = {https://doi.org/10.1038%2Fnphys2330}, doi = {10.1038/nphys2330} } @article{Inoue_2001, author = {Inoue, T. and Kindo, K. and Okuni, H. and Sugiyama, K. and Haga, Y. and Yamamoto, E. and Kobayashi, T. C. and Uwatoko, Y. and Onuki, Y.}, title = {High-field magnetization of {URu$_2$Si$_2$} under high pressure}, journal = {Physica B: Condensed Matter}, publisher = {Elsevier BV}, year = {2001}, month = {January}, volume = {294-295}, pages = {271--275}, url = {https://doi.org/10.1016%2Fs0921-4526%2800%2900657-8}, doi = {10.1016/s0921-4526(00)00657-8} } @article{Kambe_2018, author = {Kambe, S. and Tokunaga, Y. and Sakai, H. and Hattori, T. and Higa, N. and Matsuda, T. D. and Haga, Y. and Walstedt, R. E. and Harima, H.}, title = {Odd-parity electronic multipolar ordering in {URu$_2$Si$_2$}: Conclusions from {Si} and {Ru} {NMR} measurements}, journal = {Physical Review B}, publisher = {American Physical Society (APS)}, year = {2018}, month = {June}, number = {23}, volume = {97}, pages = {235142}, url = {https://doi.org/10.1103%2Fphysrevb.97.235142}, doi = {10.1103/physrevb.97.235142} } @article{Kiss_2005, author = {Kiss, Annamária and Fazekas, Patrik}, title = {Group theory and octupolar order in {URu$_2$Si$_2$}}, journal = {Physical Review B}, publisher = {American Physical Society (APS)}, year = {2005}, month = {February}, number = {5}, volume = {71}, pages = {054415}, url = {https://doi.org/10.1103%2Fphysrevb.71.054415}, doi = {10.1103/physrevb.71.054415} } @article{Kung_2015, author = {Kung, H.-H. and Baumbach, R. E. and Bauer, E. D. and Thorsmølle, V. K. and Zhang, W.-L. and Haule, K. and Mydosh, J. A. and Blumberg, G.}, title = {Chirality density wave of the ``hidden order" phase in {URu$_2$Si$_2$}}, journal = {Science}, publisher = {American Association for the Advancement of Science (AAAS)}, year = {2015}, month = {February}, number = {6228}, volume = {347}, pages = {1339--1342}, url = {https://doi.org/10.1126%2Fscience.1259729}, doi = {10.1126/science.1259729} } @article{Kusunose_2011_On, author = {Kusunose, Hiroaki and Harima, Hisatomo}, title = {On the Hidden Order in {URu$_2$Si$_2$}---Antiferro Hexadecapole Order and Its Consequences}, journal = {Journal of the Physical Society of Japan}, publisher = {Physical Society of Japan}, year = {2011}, month = {August}, number = {8}, volume = {80}, pages = {084702}, url = {https://doi.org/10.1143%2Fjpsj.80.084702}, doi = {10.1143/jpsj.80.084702} } @article{Kuwahara_1997, author = {Kuwahara, Keitaro and Amitsuka, Hiroshi and Sakakibara, Toshiro and Suzuki, Osamu and Nakamura, Shintaro and Goto, Terutaka and Mihalik, Marián and Menovsky, Alois~A. and de~Visser, Anne and Franse, Jaap~J. ~M.}, title = {Lattice Instability and Elastic Response in the Heavy Electron System {URu$_2$Si$_2$}}, journal = {Journal of the Physical Society of Japan}, publisher = {Physical Society of Japan}, year = {1997}, month = {October}, number = {10}, volume = {66}, pages = {3251--3258}, url = {https://doi.org/10.1143%2Fjpsj.66.3251}, doi = {10.1143/jpsj.66.3251} } @book{Landau_1986_Theory, author = {Landau, Lev Davidovich and Lifshitz, Evgeniĭ Mikhaĭlovich and Kosevich, Arnold M. and Pitaevskiĭ, Lev Petrovich}, title = {Theory of elasticity}, publisher = {Pergamon Press}, year = {1986}, volume = {7}, edition = {3}, isbn = {9780080570693}, series = {Landau and Lifshitz Course of Theoretical Physics} } @article{Lifshitz_1942_OnI, author = {Lifshitz, Evgeniĭ Mikhaĭlovich}, title = {On the theory of phase transitions of the second order {I}}, journal = {Proceedings of the USSR Academy of Sciences Journal of Physics}, year = {1942}, volume = {6}, pages = {61}, subtitle = {Changes of the elementary cell of a crystal in phase transitions of the second order} } @article{Lifshitz_1942_OnII, author = {Lifshitz, Evgeniĭ Mikhaĭlovich}, title = {On the theory of phase transitions of the second order {II}}, journal = {Proceedings of the USSR Academy of Sciences Journal of Physics}, year = {1942}, volume = {6}, pages = {251}, subtitle = {Phase transitions of the second order in alloys} } @article{Luthi_1970, author = {Lüthi, B. and Moran, T. J.}, title = {Sound Propagation near the Structural Phase Transition in Strontium Titanate}, journal = {Physical Review B}, publisher = {American Physical Society (APS)}, year = {1970}, month = {August}, number = {4}, volume = {2}, pages = {1211--1214}, url = {https://doi.org/10.1103%2Fphysrevb.2.1211}, doi = {10.1103/physrevb.2.1211} } @article{Meng_2013_Imaging, author = {Meng, Jian-Qiao and Oppeneer, Peter M. and Mydosh, John A. and Riseborough, Peter S. and Gofryk, Krzysztof and Joyce, John J. and Bauer, Eric D. and Li, Yinwan and Durakiewicz, Tomasz}, title = {Imaging the Three-Dimensional {Fermi}-Surface Pairing near the Hidden-Order Transition in {URu$_2$Si$_2$} Using Angle-Resolved Photoemission Spectroscopy}, journal = {Physical Review Letters}, publisher = {American Physical Society (APS)}, year = {2013}, month = {9}, number = {12}, volume = {111}, pages = {127002}, url = {https://doi.org/10.1103%2Fphysrevlett.111.127002}, doi = {10.1103/physrevlett.111.127002} } @article{Ohkawa_1999, author = {Ohkawa, Fusayoshi J and Shimizu, Hirofumi}, title = {Quadrupole and dipole orders in {URu$_2$Si$_2$}}, journal = {Journal of Physics}, publisher = {IOP Publishing}, year = {1999}, month = {November}, number = {46}, volume = {11}, pages = {L519--L524}, url = {https://doi.org/10.1088%2F0953-8984%2F11%2F46%2F101}, doi = {10.1088/0953-8984/11/46/101}, journalsubtitle = {Condensed Matter} } @article{Ramshaw_2015, author = {Ramshaw, B. J. and Shekhter, Arkady and McDonald, Ross D. and Betts, Jon B. and Mitchell, J. N. and Tobash, P. H. and Mielke, C. H. and Bauer, E. D. and Migliori, Albert}, title = {Avoided valence transition in a plutonium superconductor}, journal = {Proceedings of the National Academy of Sciences}, publisher = {Proceedings of the National Academy of Sciences}, year = {2015}, month = {March}, number = {11}, volume = {112}, pages = {3285--3289}, url = {https://doi.org/10.1073%2Fpnas.1421174112}, doi = {10.1073/pnas.1421174112} } @article{Rau_2012_Hidden, author = {Rau, Jeffrey G. and Kee, Hae-Young}, title = {Hidden and antiferromagnetic order as a rank-5 superspin in {URu$_2$Si$_2$}}, journal = {Physical Review B}, publisher = {American Physical Society (APS)}, year = {2012}, month = {6}, number = {24}, volume = {85}, pages = {245112}, url = {https://doi.org/10.1103%2Fphysrevb.85.245112}, doi = {10.1103/physrevb.85.245112} } @article{Riggs_2015_Evidence, author = {Riggs, Scott C. and Shapiro, M. C. and Maharaj, Akash V and Raghu, S. and Bauer, E. D. and Baumbach, R. E. and Giraldo-Gallo, P. and Wartenbe, Mark and Fisher, I. R.}, title = {Evidence for a nematic component to the hidden-order parameter in {URu$_2$Si$_2$} from differential elastoresistance measurements}, journal = {Nature Communications}, publisher = {Springer Science and Business Media LLC}, year = {2015}, month = {3}, number = {1}, volume = {6}, pages = {6425}, url = {https://doi.org/10.1038%2Fncomms7425}, doi = {10.1038/ncomms7425} } @article{Santini_1994, author = {Santini, P. and Amoretti, G.}, title = {Crystal Field Model of the Magnetic Properties of {URu$_2$Si$_2$}}, journal = {Physical Review Letters}, publisher = {American Physical Society (APS)}, year = {1994}, month = {August}, number = {7}, volume = {73}, pages = {1027--1030}, url = {https://doi.org/10.1103%2Fphysrevlett.73.1027}, doi = {10.1103/physrevlett.73.1027} } @article{Shekhter_2013, author = {Shekhter, Arkady and Ramshaw, B. J. and Liang, Ruixing and Hardy, W. N. and Bonn, D. A. and Balakirev, Fedor F. and McDonald, Ross D. and Betts, Jon B. and Riggs, Scott C. and Migliori, Albert}, title = {Bounding the pseudogap with a line of phase transitions in {YBa$_2$Cu$_3$O$_{6+\delta}$}}, journal = {Nature}, publisher = {Springer Science and Business Media LLC}, year = {2013}, month = {June}, number = {7452}, volume = {498}, pages = {75--77}, url = {https://doi.org/10.1038%2Fnature12165}, doi = {10.1038/nature12165} } @article{Thalmeier_2011, author = {Thalmeier, Peter and Takimoto, Tetsuya}, title = {Signatures of hidden-order symmetry in torque oscillations, elastic constant anomalies, and field-induced moments in {URu$_2$Si$_2$}}, journal = {Physical Review B}, publisher = {American Physical Society (APS)}, year = {2011}, month = {April}, number = {16}, volume = {83}, pages = {165110}, url = {https://doi.org/10.1103%2Fphysrevb.83.165110}, doi = {10.1103/physrevb.83.165110} } @article{Tonegawa_2012_Cyclotron, author = {Tonegawa, S. and Hashimoto, K. and Ikada, K. and Lin, Y. -H. and Shishido, H. and Haga, Y. and Matsuda, T. D. and Yamamoto, E. and Onuki, Y. and Ikeda, H. and Matsuda, Y. and Shibauchi, T.}, title = {Cyclotron Resonance in the Hidden-Order Phase of {URu$_2$Si$_2$}}, journal = {Physical Review Letters}, publisher = {American Physical Society (APS)}, year = {2012}, month = {7}, number = {3}, volume = {109}, pages = {036401}, url = {https://doi.org/10.1103%2Fphysrevlett.109.036401}, doi = {10.1103/physrevlett.109.036401} } @article{Varshni_1970, author = {Varshni, Y. P.}, title = {Temperature Dependence of the Elastic Constants}, journal = {Physical Review B}, publisher = {American Physical Society (APS)}, year = {1970}, month = {November}, number = {10}, volume = {2}, pages = {3952--3958}, url = {https://doi.org/10.1103%2Fphysrevb.2.3952}, doi = {10.1103/physrevb.2.3952} } @article{Wiebe_2007, author = {Wiebe, C. R. and Janik, J. A. and MacDougall, G. J. and Luke, G. M. and Garrett, J. D. and Zhou, H. D. and Jo, Y.-J. and Balicas, L. and Qiu, Y. and Copley, J. R. D. and Yamani, Z. and Buyers, W. J. L.}, title = {Gapped itinerant spin excitations account for missing entropy in the hidden-order state of {URu$_2$Si$_2$}}, journal = {Nature Physics}, publisher = {Springer Science and Business Media LLC}, year = {2007}, month = {January}, number = {2}, volume = {3}, pages = {96--99}, url = {https://doi.org/10.1038%2Fnphys522}, doi = {10.1038/nphys522} } @article{Wolf_1994, author = {Wolf, B. and Sixl, W. and Graf, R. and Finsterbusch, D. and Bruls, G. and Lüthi, B. and Knetsch, E. A. and Menovsky, A. A. and Mydosh, J. A.}, title = {Elastic properties of the heavy fermion superconductor {URu$_2$Si$_2$}}, journal = {Journal of Low Temperature Physics}, publisher = {Springer Science and Business Media LLC}, year = {1994}, month = {February}, number = {3-4}, volume = {94}, pages = {307--324}, url = {https://doi.org/10.1007%2Fbf00754672}, doi = {10.1007/bf00754672} } @article{Yanagisawa_2014, author = {Yanagisawa, Tatsuya}, title = {Ultrasonic study of the hidden order and heavy-fermion state in {URu$_2$Si$_2$} with hydrostatic pressure, {Rh}-doping, and high magnetic fields}, journal = {Philosophical Magazine}, publisher = {Informa UK Limited}, year = {2014}, month = {March}, number = {32-33}, volume = {94}, pages = {3775--3788}, url = {https://doi.org/10.1080%2F14786435.2013.878054}, doi = {10.1080/14786435.2013.878054} } @article{Yoshida_2010_Signature, author = {Yoshida, Rikiya and Nakamura, Yoshiaki and Fukui, Masaki and Haga, Yoshinori and Yamamoto, Etsuji and {\=O}nuki, Yoshichika and Okawa, Mario and Shin, Shik and Hirai, Masaaki and Muraoka, Yuji and Yokoya, Takayoshi}, title = {Signature of hidden order and evidence for periodicity modification in {URu$_\text2$Si$_\text2$}}, journal = {Physical Review B}, publisher = {American Physical Society (APS)}, year = {2010}, month = {11}, number = {20}, volume = {82}, pages = {205108}, url = {https://doi.org/10.1103%2Fphysrevb.82.205108}, doi = {10.1103/physrevb.82.205108} } @article{Yoshida_2013_Translational, author = {Yoshida, Rikiya and Tsubota, Koji and Ishiga, Toshihiko and Sunagawa, Masanori and Sonoyama, Jyunki and Aoki, Dai and Flouquet, Jacques and Wakita, Takanori and Muraoka, Yuji and Yokoya, Takayoshi}, title = {Translational Symmetry Breaking and Gapping of Heavy-Quasiparticle Pocket in {URu$_\text2$Si$_\text2$}}, journal = {Scientific Reports}, publisher = {Springer Science and Business Media LLC}, year = {2013}, month = {10}, number = {1}, volume = {3}, pages = {2750}, url = {https://doi.org/10.1038%2Fsrep02750}, doi = {10.1038/srep02750} }