Electron tunneling study in the NbSe3 charge density wave state

被引：27

作者：

Sorbier, JP

Tortel, H

Monceau, P

Levy, F

机构：

[1] CNRS,CTR RECH TRES BASSES TEMP,F-38042 GRENOBLE 09,FRANCE

[2] ECOLE POLYTECH FED LAUSANNE,PHB ECUBLENS,INST PHYS APPL,CH-1015 LAUSANNE,SWITZERLAND

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.76.676

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A study using tunneling spectroscopy of the density of states in the vicinity of Fermi level has been performed on NbSe3 at low temperature. The tunneling conductance data reveal an asymmetry with respect to the Fermi level and below 4.2 K two minima. These results definitely establish the semimetallic character of NbSe3 at low temperature. Tunneling spectra have been analyzed assuming an anisotropic gap structure, and the transverse coupling energy derived is in good agreement with band calculations.

引用

页码：676 / 679

页数：4

共 24 条

[1] CHARGE-DENSITY WAVE FORMATION, SUPERCONDUCTIVITY AND FERMI-SURFACE DETERMINATION IN NBSE3 - A PRESSURE STUDY [J].

BRIGGS, A ;

MONCEAU, P ;

NUNEZREGUEIRO, M ;

PEYRARD, J ;

RIBAULT, M ;

RICHARD, J .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1980, 13 (11) :2117-2130

[2] COMPARISON OF THE ELECTRONIC-STRUCTURES OF LAYERED TRANSITION-METAL TRICHALCOGENIDES TASE3, TAS3, AND NBSE3 [J].

CANADELL, E ;

RACHIDI, IEI ;

POUGET, JP ;

GRESSIER, P ;

MEERSCHAUT, A ;

ROUXEL, J ;

JUNG, D ;

EVAIN, M ;

WHANGBO, MH .

INORGANIC CHEMISTRY, 1990, 29 (07) :1401-1407

[3] FAR INFRARED OPTICAL-PROPERTIES OF NBSE3 [J].

CHALLENER, WA ;

RICHARDS, PL .

SOLID STATE COMMUNICATIONS, 1984, 52 (02) :117-121

[4] SUPERCONDUCTIVE TUNNELING [J].

COHEN, MH ;

FALICOV, LM ;

PHILLIPS, JC .

PHYSICAL REVIEW LETTERS, 1962, 8 (08) :316-&

[5] EFFECTS OF HIGH MAGNETIC-FIELDS ON CHARGE-DENSITY WAVES IN NBSE3 [J].

COLEMAN, RV ;

EVERSON, MP ;

LU, HA ;

JOHNSON, A ;

FALICOV, LM .

PHYSICAL REVIEW B, 1990, 41 (01) :460-489

[6] ELECTRON-TUNNELING STUDY OF NBSE3 [J].

EKINO, T ;

AKIMITSU, J .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1987, 26 :625-626

[7]

ESAKI L, 1969, TUNNELING PHENOMENA

[8]

FOURNEL A, 1975, PHYS REV LETT, V57, P197

[9] ENERGY GAP IN SUPERCONDUCTORS MEASURED BY ELECTRON TUNNELING [J].

GIAEVER, I .

PHYSICAL REVIEW LETTERS, 1960, 5 (04) :147-148

[10]

GORKOV L, CHARGE DENSITY WAVE

← 1 2 3 →