Interplay between phase defects and spin polarization in the specific heat of the spin density wave compound (TMTTF)_2Br in a magnetic field

Abstract

Equilibrium heat relaxation experiments provide evidence that the ground state of the commensurate spin density wave (SDW) compound (TMTTF)${}_2$Br after the application of a sufficient magnetic field is different from the conventional ground state. The experiments are interpreted on the basis of the local model of strong pinning as the deconfinement of soliton-antisoliton pairs triggered by the Zeeman coupling to spin degrees of freedom, resulting in a magnetic field induced density wave glass for the spin carrying phase configuration.

4 pages, 5 figures

References in corpus (3)

• Pinning and Sliding of Driven Elastic Systems: from Domain Walls to Charge Density Waves
• Energy relaxation in disordered charge and spin density waves
• Bimodal energy relaxations in quasi-one-dimensional systems

Cited by in corpus (4)

• Electronic crystals: an experimental overview
• Equilibrium Low Temperature Heat Capacity of the Spin Density Wave compound (TMTTF)2 Br: effect of a Magnetic Field
• Relaxation time spectrum of low-energy excitations in one- and two-dimensional materials with charge or spin density waves
• Effect of impurity pinning on conduction and specific heat in the Luttinger liquid