From 31172eb6d3e57a99ab0909a9908f9d37805b6611 Mon Sep 17 00:00:00 2001
From: Jaron Kent-Dobias <jaron@kent-dobias.com>
Date: Wed, 30 Oct 2019 11:23:38 -0400
Subject: pretty new figures

---
 main.tex | 109 +++++++++++++++++++++++++++++++++++++++++++++------------------
 1 file changed, 78 insertions(+), 31 deletions(-)

(limited to 'main.tex')

diff --git a/main.tex b/main.tex
index 84bb3f9..d79ef78 100644
--- a/main.tex
+++ b/main.tex
@@ -3,6 +3,41 @@
 \usepackage[utf8]{inputenc}
 \usepackage{amsmath,graphicx,upgreek,amssymb,xcolor}
 \usepackage[colorlinks=true,urlcolor=purple,citecolor=purple,filecolor=purple,linkcolor=purple]{hyperref}
+\usepackage[english]{babel}
+
+\definecolor{mathc1}{html}{5e81b5}
+\definecolor{mathc2}{html}{e19c24}
+\definecolor{mathc3}{html}{8fb032}
+\definecolor{mathc4}{html}{eb6235}
+
+\makeatletter
+% A change to a babel macro -- Don't ask!
+\def\bbl@set@language#1{%
+  \edef\languagename{%
+    \ifnum\escapechar=\expandafter`\string#1\@empty
+    \else\string#1\@empty\fi}%
+  %%%% ADDITION
+  \@ifundefined{babel@language@alias@\languagename}{}{%
+    \edef\languagename{\@nameuse{babel@language@alias@\languagename}}%
+  }%
+  %%%% END ADDITION
+  \select@language{\languagename}%
+  \expandafter\ifx\csname date\languagename\endcsname\relax\else
+    \if@filesw
+      \protected@write\@auxout{}{\string\select@language{\languagename}}%
+      \bbl@for\bbl@tempa\BabelContentsFiles{%
+        \addtocontents{\bbl@tempa}{\xstring\select@language{\languagename}}}%
+      \bbl@usehooks{write}{}%
+    \fi
+  \fi}
+% The user interface
+\newcommand{\DeclareLanguageAlias}[2]{%
+  \global\@namedef{babel@language@alias@#1}{#2}%
+}
+\makeatother
+
+\DeclareLanguageAlias{en}{english}
+
 
 \newcommand{\brad}[1]{{\color{red} #1}}
 
@@ -59,22 +94,41 @@
 \date\today
 
 \begin{abstract}
-  We develop a phenomenological mean field theory of the hidden order phase in \urusi\ as a ``staggered nematic" order. Several experimental features are reproduced when the order parameter is a nematic of the $\Bog$ representation, staggered along the c-axis: the topology of the temperature--pressure phase diagram, the response of the elastic modulus $(c_{11}-c_{12})/2$ above the hidden-order transition at zero pressure, and orthorhombic symmetry breaking in the high-pressure antiferromagnetic phase. In this scenario, hidden order is characterized by broken rotational symmetry that is modulated along the $c$-axis, the primary order of the high-pressure phase is an unmodulated nematic state, and the triple point joining those two phases with the high-temperature paramagnetic phase is a Lifshitz point.
+  We develop a phenomenological mean field theory of the hidden order phase in
+  \urusi\ as a ``staggered nematic" order. Several experimental features are
+  reproduced when the order parameter is a nematic of the $\Bog$
+  representation, staggered along the c-axis: the topology of the
+  temperature--pressure phase diagram, the response of the elastic modulus
+  $(C_{11}-C_{12})/2$ above the hidden-order transition at zero pressure, and
+  orthorhombic symmetry breaking in the high-pressure antiferromagnetic phase.
+  In this scenario, hidden order is characterized by broken rotational symmetry
+  that is modulated along the $c$-axis, the primary order of the high-pressure
+  phase is an unmodulated nematic state, and the triple point joining those two
+  phases with the high-temperature paramagnetic phase is a Lifshitz point.
 \end{abstract}
 
 \maketitle
 
 \emph{Introduction.}
-\urusi\ is a paradigmatic example of a material with an ordered state whose broken symmetry remains unknown. This state, known as \emph{hidden order} (\ho), sets the stage for unconventional superconductivity that emerges at even lower temperatures. 
-At sufficiently large hydrostatic pressures, both superconductivity and \ho\ give way to local moment antiferromagnetism (\afm) \cite{hassinger_temperature-pressure_2008}.
-Despite over thirty years of effort, the symmetry of the \ho\ state remains
-unknown, and modern theories \cite{kambe_odd-parity_2018, haule_arrested_2009,
-  kusunose_hidden_2011, kung_chirality_2015, cricchio_itinerant_2009,
-  ohkawa_quadrupole_1999, santini_crystal_1994, kiss_group_2005,
-  harima_why_2010, thalmeier_signatures_2011, tonegawa_cyclotron_2012,
-rau_hidden_2012, riggs_evidence_2015, hoshino_resolution_2013,
-ikeda_theory_1998, chandra_hastatic_2013, harrison_hidden_nodate,
-ikeda_emergent_2012} propose a variety of possibilities. Our work here seeks to unify two experimental observations: one, the $\Bog$ ``nematic" elastic susceptibility $(c_{11}-c_{12})/2$ softens anomalously from room temperature down to T$_{\mathrm{HO}}=17.5~$ K \brad{find old citations for this data}; and two, a $\Bog$ nematic distortion is observed by x-ray scattering under sufficient pressure to destroy the \ho\ state \cite{choi_pressure-induced_2018}.
+\urusi\ is a paradigmatic example of a material with an ordered state whose
+broken symmetry remains unknown. This state, known as \emph{hidden order}
+(\ho), sets the stage for unconventional superconductivity that emerges at even
+lower temperatures.  At sufficiently large hydrostatic pressures, both
+superconductivity and \ho\ give way to local moment antiferromagnetism (\afm)
+\cite{hassinger_temperature-pressure_2008}.  Despite over thirty years of
+effort, the symmetry of the \ho\ state remains unknown, and modern theories
+\cite{kambe_odd-parity_2018, haule_arrested_2009, kusunose_hidden_2011,
+  kung_chirality_2015, cricchio_itinerant_2009, ohkawa_quadrupole_1999,
+  santini_crystal_1994, kiss_group_2005, harima_why_2010,
+  thalmeier_signatures_2011, tonegawa_cyclotron_2012, rau_hidden_2012,
+  riggs_evidence_2015, hoshino_resolution_2013, ikeda_theory_1998,
+chandra_hastatic_2013, harrison_hidden_nodate, ikeda_emergent_2012} propose a
+variety of possibilities. Our work here seeks to unify two experimental
+observations: one, the $\Bog$ ``nematic" elastic susceptibility
+$(C_{11}-C_{12})/2$ softens anomalously from room temperature down to
+T$_{\mathrm{HO}}=17.5~$ K \brad{find old citations for this data}; and two, a
+$\Bog$ nematic distortion is observed by x-ray scattering under sufficient
+pressure to destroy the \ho\ state \cite{choi_pressure-induced_2018}.
 
 Recent \emph{resonant ultrasound spectroscopy} (\rus) measurements examined the thermodynamic discontinuities in the elastic moduli at T$_{\mathrm{HO}}$ \cite{ghosh_single-component_nodate}. The observation of discontinues only in compressional, or $\Aog$, elastic moduli requires that the point-group representation of \ho\ is one-dimensional. This rules out a large number of order parameter candidates \brad{cite those ruled out} in a model-free way, but still leaves the microscopic nature of \ho~ undecided. 
 
@@ -357,10 +411,19 @@ $|\Delta\tilde r|^\gamma$ for $\gamma=1$.  \brad{I think this last sentence, whi
   \centering
   \includegraphics[width=\columnwidth]{fig-stiffnesses}
   \caption{
-   Resonant ultrasound spectroscopy measurements of the elastic moduli of
-   \urusi\ as a function of temperature for the six independent components of
-   strain. The vertical lines show the location of the \ho\ transition. 
-   \textbf{ONE FIGURE: Just B2g and B1g, vashni fit for one, our fit for the other, something else}
+   \Rus\ measurements of the elastic moduli of
+   \urusi\ as a function of temperature (green, solid) alongside fits to theory. The vertical yellow lines show the location of the \ho\ transition. (a) $\Btg$ modulus data and fit to standard form \cite{varshni_temperature_1970}. (b) $\Bog$ modulus data and fit
+    to \eqref{eq:elastic.susceptibility}. The fit gives
+    $C^0_\Bog\simeq\big[71-(0.010\,\K^{-1})T\big]\,\GPa$,
+    $b^2/D_\perp q_*^4\simeq6.2\,\GPa$, and $a/D_\perp
+    q_*^4\simeq0.0038\,\K^{-1}$. Addition of an additional parameter to fit the standard bare modulus \cite{varshni_temperature_1970} led to sloppy fits. (c) $\Bog$ modulus data and fit of \emph{bare}
+    $\Bog$ modulus. (d) $\Bog$ modulus data and fit transformed using
+    $[C^0_\Bog(C^0_\Bog/C_\Bog-1)]]^{-1}$, which is prediced from
+    \eqref{eq:susceptibility} and \eqref{eq:elastic.susceptibility} to be
+    linear. The failure of the Ginzburg--Landau prediction
+    below the transition is expected on the grounds that the \op\ is too large
+    for the free energy expansion to be valid by the time the Ginzburg
+    temperature is reached.
   }
   \label{fig:data}
 \end{figure}
@@ -385,22 +448,6 @@ Figure \ref{fig:fit}. The data and theory appear quantitatively consistent in
 the high temperature phase, suggesting that \ho\ can be described as a
 $\Bog$-nematic phase that is modulated at finite $q$ along the $c-$axis.
 
-\begin{figure}[htpb]
-  \includegraphics[width=\columnwidth]{fig-fit}
-  \caption{
-    Elastic modulus data for the $\Bog$ component of strain (solid) along with
-    a fit of \eqref{eq:elastic.susceptibility} to the data above $T_c$
-    (dashed). The fit gives
-    $C^0_\Bog\simeq\big[71-(0.010\,\K^{-1})T\big]\,\GPa$,
-    $b^2/D_\perp q_*^4\simeq6.2\,\GPa$, and $a/D_\perp
-    q_*^4\simeq0.0038\,\K^{-1}$. The failure of the Ginzburg--Landau prediction
-    below the transition is expected on the grounds that the \op\ is too large
-    for the free energy expansion to be valid by the time the Ginzburg
-    temperature is reached.
-  }
-  \label{fig:fit}
-\end{figure}
-
 We have seen that the mean-field theory of a $\Bog$ \op\ recreates the topology
 of the \ho\ phase diagram and the temperature dependence of the $\Bog$ elastic modulus at zero pressure. This theory has several other physical implications. First,
 the association of a modulated $\Bog$ order with the \ho\ phase implies a
-- 
cgit v1.2.3-70-g09d2

