Observation of Antiferromagnetic Resonance in an Organic Superconductor

J. B. Torrance, H. J. Pedersen, K. Bechgaard

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Anomalous microwave absorption has been observed in the organic superconductor TMTSF2AsF6 (TMTSF: tetramethyltetraselenafulvalene) below its metal-nonmetal transition near 12 K. This absorption is unambiguously identified as antiferromagnetic resonance by the excellent agreement between a spin-wave calculation and the pronounced dependence on temperature and magnetic field orientation. This result dramatically confirms earlier indications of magnetic ordering or spin-density waves and, furthermore, indicates that the spin-density-wave amplitude is considerably larger than previous estimates of <1%.
Original languageEnglish
JournalPhysical Review Letters
Issue number12
Pages (from-to)881-884
Publication statusPublished - 1982

Bibliographical note

Copyright (1982) by the American Physical Society.

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