paper

Electron-lattice coupling and the broken symmetries of the molecular salt (TMTTF) $_{2}$ SbF $_{6}$

arXiv:cond-mat/0405683 · doi:10.1103/PhysRevB.70.121101

Abstract

(TMTTF) $_{2}$ SbF $_{6}$ is known to undergo a charge ordering (CO) phase transition at $T_{C O} \approx 156 K$ and another transition to an antiferromagnetic (AF) state at $T_{N} \approx 8 K$ . Applied pressure $P$ causes a decrease in both $T_{C O}$ and $T_{N}$ . When $P > 0.5 GP a$ , 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.

4 pages, 5 figures

Electron-lattice coupling and the broken symmetries of the molecular salt (TMTTF)2​SbF6​

Abstract

Electron-lattice coupling and the broken symmetries of the molecular salt (TMTTF) $_{2}$ SbF $_{6}$