Fermi surface and superconducting gap of 2H-NbSe2 using low-temperature ultrahigh-resolution angle-resolved photoemission spectroscopy

被引：14

作者：

Kiss, T

Yokoya, T

Chainani, A

Shin, S

Nohara, M

Takagi, H

机构：

[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

[2] Inst Plasma Res, Bhat 382428, Gandhinagar, India

[3] RIKEN, Inst Phys & Chem Res, Sayo, Hyogo 6795143, Japan

[4] Univ Tokyo, Dept Adv Mat Sci, Tokyo 1130033, Japan

来源：

PHYSICA B-CONDENSED MATTER | 2002年 / 312卷

关键词：

Fermi surface; superconducting gap; ARPES;

D O I：

10.1016/S0921-4526(01)01293-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have studied the Fermi surface (FS) and superconducting gap of 2H-NbSe2, using angle-resolved photoemission spectroscopy with an energy resolution of 2.2 meV and an angle resolution of +/-0.13degrees. We succeeded in distinguishing all FS sheets predicted from band calculations and found that the observed hexagonal Fermi surface nesting vector centered at the Gamma point is larger than the CDW nesting vector reported from neutron diffraction measurements. Furthermore, a superconducting gap at one FS sheet is successfully observed. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：666 / 667

页数：2

共 3 条

[1] QUANTUM OSCILLATIONS IN THE MIXED-STATE OF THE TYPE-II SUPERCONDUCTOR 2H-NBSE2 [J].