Metal-insulator transition in 1T-TaS2-xSex

被引：5

作者：

Shiino, O ^{[1
]}

Watanabe, T

Endo, T

Hanaguri, T

Kitazawa, K

Nohara, M

Takagi, H

Murayama, C

Takeshita, N

Môri, N

Hasegawa, T

Yamaguchi, W

机构：

[1] Univ Tokyo, Dept Supercond, Bunkyo Ku, Tokyo 1138656, Japan

[2] Univ Tokyo, Dept Adv Mat Sci, Bunkyo Ku, Tokyo 1138656, Japan

[3] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 1060032, Japan

[4] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

[5] Natl Ind Res Inst Nagoya, Kita Ku, Nagoya, Aichi 4620057, Japan

来源：

PHYSICA B | 2000年 / 284卷

关键词：

1T-TaS2-xSex; charge density wave; metal-insulator transition;

D O I：

10.1016/S0921-4526(99)02846-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The transition metal dichalcogenide, 1T-TaS2, shows metal-insulator transition (MIT) accompanying the nearly commensurate (NC)-commensurate (C) charge density wave (CDW) phase transition at 180 K. It has been proposed that the low-temperature C-CDW phase is a Mott insulator. However, our specific heat and magnetic susceptibility measurements in the 1 T-Ta2 - xSex system revealed no indications of effective mass enhancement or intrinsic localized spins in the insulating phase. So we propose a new model for the MIT in which the interlayer coupling of the CDW superstructure plays an important role. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

引用

页码：1673 / 1674

页数：2

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