Interplay between phase defects and spin polarization in the specific heat of the spin-density-wave compound (TMTTF)2Br in a magnetic field |
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Authors: | Mélin R Lasjaunias J C Sahling S Remenyi G Biljaković K |
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Affiliation: | Centre de Recherches sur les Très Basses Températures (CRTBT), CNRS, B.P. 166, 38042 Grenoble cedex 9, France. |
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Abstract: | Equilibrium heat relaxation experiments provide evidence that the ground state of the commensurate spin-density-wave compound (TMTTF)2Br 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 the phase configuration. |
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