Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electron-lattice coupling and the broken symmetries of the molecular
  salt (TMTTF)$_2$SbF$_6$   (TMTTF)$_2$SbF$_6$ is known to undergo a charge ordering (CO) phase
transition at $T_{CO}\approx156K$ and another transition to an
antiferromagnetic (AF) state at $T_N\approx 8K$. Applied pressure $P$ causes a
decrease in both $T_{CO}$ and $T_N$. When $P>0.5 GPa$, the CO is largely
supressed, and there is no remaining signature of AF order. Instead, the ground
state is a singlet. In addition to establishing an expanded, general phase
diagram for the physics of TMTTF salts, we establish the role of
electron-lattice coupling in determining how the system evolves with pressure.

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The categories of this paper are: physics
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The categories of this paper are: atom-ph
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The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
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The categories of this paper are: adap-org
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The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
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The categories of this paper are: cs
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The categories of this paper are: bayes-an
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The categories of this paper are: mtrl-th
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The categories of this paper are: funct-an