Observation of Orbital Resonance Hall Effect in (TMTSF)2ClO4

被引：9
作者：
Kobayashi, Kaya [1 ]
Satsukawa, H. [2 ]
Yamada, J. [3 ]
Terashima, T. [2 ]
Uji, S. [2 ]
机构：
[1] Aoyama Gakuin Univ, Kanagawa 2525258, Japan
[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050003, Japan
[3] Univ Hyogo, Kakogawa, Hyogo 6781297, Japan
来源：
PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 11期
基金：
日本学术振兴会;
关键词：
DEPENDENT MAGNETORESISTANCE OSCILLATIONS; HIGH MAGNETIC-FIELDS; SPIN-DENSITY-WAVE; TETRAMETHYLTETRASELENAFULVALENIUM PERCHLORATE; (TMTSF)2CLO4; ANISOTROPY; CONDUCTOR; METALS; STATE;
D O I：
10.1103/PhysRevLett.112.116805
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report the observation of a Hall effect driven by orbital resonance in the quasi-1-dimensional (q1D) organic conductor (TMTSF)(2)ClO4. Although a conventional Hall effect is not expected in this class of materials due to their reduced dimensionality, we observed a prominent Hall response at certain orientations of the magnetic field B corresponding to lattice vectors of the constituent molecular chains, known as the magic angles (MAs). We show that this Hall effect can be understood as the response of conducting planes generated by an effective locking of the orbital motion of the charge carriers to the MA driven by an electron-trajectory resonance. This phenomenon supports a class of theories describing the rich behavior of MA phenomena in q1D materials based on altered dimensionality. Furthermore, we observed that the effective carrier density of the conducting planes is exponentially suppressed in large B, which indicates possible density wave formation.
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页数：5
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