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Spin and anion dynamics on (TMTSF)2 FSO3, studied by NMR

Title
Spin and anion dynamics on (TMTSF)2 FSO3, studied by NMR
Authors
Hiraki K.Kang H.Nemoto T.Satsukawa H.Takahashi T.Jo Y.J.Kang W.Chung O.H.
Ewha Authors
강원
SCOPUS Author ID
강원scopus
Issue Date
2004
Journal Title
Journal De Physique. IV : JP
ISSN
1155-4339JCR Link
Citation
Journal De Physique. IV : JP vol. 114, pp. 103 - 105
Indexed
SCOPUS WOS scopus
Document Type
Conference Paper
Abstract
In order to characterise the electronic properties in sub-phases of (TMTSF)2FSO3 under pressure, 77Se, and 19F NMR Knight shift (K) and relaxation rate (1/T1) measurements were performed at ambient and 0.82 GPa pressure.The insulating phase below the metal-insulator transition (MIT) at 89 K at ambient pressure (AP) was confirmed as a nonmagnetic state with a gap of Δ/k B∼420 K. This MIT is strongly coupled with anion ordering.The MIT temperature decreases under pressure, and many electronic anomalies (or transitions) have been observed from transport measurements.The reduction of density of states in the metallic state by applying pressure was confirmed by the analysis of K and Korringa constant (1/T1T). A nonmagnetic insulating transition corresponding to the MIT at AP at 89 K, was observed at ∼45K at 0.82 GPa. A spin (charge) gap in the insulating state at 0.82 GPa is smaller (Δ/kB∼90 K) than that at AP. © EDP Sciences.
DOI
10.1051/jp4:2004114020
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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