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

R. Mélin·J. C. Lasjaunias·S. Sahling·G. Remenyi·K. Biljakovic
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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.

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R. Mélin, J. C. Lasjaunias, S. Sahling, G. Remenyi, K. Biljakovic. 2006-06-15. Interplay between phase defects and spin polarization in the specific heat of the spin density wave compound (TMTTF)_2Br in a magnetic field. https://doi.org/10.1103/physrevlett.97.227203

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