Spin Dynamics in the Mixed Stack Charge Transfer Complex, (BEDO-TTF)(Cl2TCNQ)

被引：0

作者：

Hiraki, Ko-ichi ^{[1
]}

Takahashi, Masashi ^{[2
]}

Takahashi, Toshihiro ^{[2
]}

Hasegawa, Tatsuo ^{[3
]}

Kondo, Ryusuke ^{[4
]}

Kagoshima, Seiichi ^{[5
]}

机构：

[1] Fukushinia Med Univ, Fukushima 9601295, Japan

[2] Gakushuin Univ, Dept Phys, Toshima Ku, Tokyo 1718588, Japan

[3] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan

[4] Okayama Univ, Dept Phys, Okayama 7008530, Japan

[5] Univ Tokyo, Dept Arts & Sci, Meguro Ku, Tokyo 1538902, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2020年 / 89卷 / 07期

关键词：

NUCLEAR MAGNETIC-RELAXATION; TRANSITION;

D O I：

10.7566/JPSJ.89.074706

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

(CNMR)-C-13 measurements were performed to investigate the spin dynamics in the mixed stack charge transfer complex (BEDO-TTF)(Cl(2)TCNQ). localized spins on the donor and acceptor sites fluctuate paramagnetically following a Curie Weiss behavior at temperatures higher than 110K. The NMR shift dropped to zero and the relaxation rate T-1(-)1 decreased exponentially at temperatures below 110K. These results indicate that the system undergoes a transition into a nonmagnetic ground state with a finite spin gap. A large enhancement of the transverse relaxation rate T(2)(-)(1 )was observed at around 200 K. This suggests the possibility of the existence of anomalous spin dynamics in the paramagnetic state.

引用

页数：4

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