Spectral consequences of broken phase coherence in 1T-TaS2

被引：87

作者：

Zwick, F ^{[1
]}

Berger, H

Vobornik, I

Margaritondo, G

Forro, L

Beeli, C

Onellion, M

Panaccione, G

Taleb-Ibrahimi, A

Grioni, M

机构：

[1] Ecole Polytech Fed Lausanne, Inst Phys Appl, CH-1015 Lausanne, Switzerland

[2] Ecole Polytech Fed Lausanne, IGA, Lab Phys Solides Semicristallins, CH-1015 Lausanne, Switzerland

[3] Ecole Polytech Fed Lausanne, CIME, CH-1015 Lausanne, Switzerland

[4] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[5] Univ Paris Sud, LURE, F-91405 Orsay, France

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.81.1058

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Random defects destroy long-range phase coherence, and inhibit the metal-insulator transition in the charge density wave (CDW) system 1T-TaS2. Photoelectron spectroscopy with high resolution reveals corresponding changes in the electronic structure. Core level spectra indicate a temperature-dependent limited growth of commensurate CDW domains. Screening by free carriers from the domain boundaries reduces the Coulomb repulsion in the Ta d band by similar to 1/3, compared to pure samples, yielding a finite spectral weight at the Fermi level.

引用

页码：1058 / 1061

页数：4

共 19 条

[1]

BERGER H, IN PRESS

[2] CHARGE-DENSITY-WAVE DOMAINS IN 1T-TAS2 OBSERVED BY SATELLITE STRUCTURE IN SCANNING-TUNNELING-MICROSCOPY IMAGES [J].

BURK, B ;

THOMSON, RE ;

ZETTL, A ;

CLARKE, J .

PHYSICAL REVIEW LETTERS, 1991, 66 (23) :3040-3043

[3] TEMPERATURE-DEPENDENT PSEUDOGAP AND ELECTRON LOCALIZATION IN 1T-TAS2 [J].

DARDEL, B ;

GRIONI, M ;

MALTERRE, D ;

WEIBEL, P ;

BAER, Y ;

LEVY, F .

PHYSICAL REVIEW B, 1992, 45 (03) :1462-1465

[4] ELECTRICAL, STRUCTURAL AND MAGNETIC-PROPERTIES OF PURE AND DOPED 1T-TAS2 [J].

FAZEKAS, P ;

TOSATTI, E .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1979, 39 (03) :229-244

[5] EVOLUTION OF THE SPECTRAL-FUNCTION IN MOTT-HUBBARD SYSTEMS WITH D(1) CONFIGURATION [J].

FUJIMORI, A ;

HASE, I ;

NAMATAME, H ;

FUJISHIMA, Y ;

TOKURA, Y ;

EISAKI, H ;

UCHIDA, S ;

TAKEGAHARA, K ;

DEGROOT, FMF .

PHYSICAL REVIEW LETTERS, 1992, 69 (12) :1796-1799

[6] CHARGE-DENSITY WAVES IN LAYERED METALS OBSERVED BY X-RAY PHOTOEMISSION [J].

HUGHES, HP ;

POLLAK, RA .

PHILOSOPHICAL MAGAZINE, 1976, 34 (06) :1025-1046

[7] SITE-SPECIFIC PHOTOHOLE SCREENING IN A CHARGE-DENSITY-WAVE [J].

HUGHES, HP ;

SCARFE, JA .

PHYSICAL REVIEW LETTERS, 1995, 74 (15) :3069-3072

[8] Temperature-dependent scanning tunneling spectroscopy of 1T-TaS2 [J].

Kim, JJ ;

Ekvall, I ;

Olin, H .

PHYSICAL REVIEW B, 1996, 54 (03) :2244-2248

[9] ON THE PHASE-TRANSITIONS IN 1T-TAS2 [J].

MANZKE, R ;

BUSLAPS, T ;

PFALZGRAF, B ;

SKIBOWSKI, M ;

ANDERSON, O .

EUROPHYSICS LETTERS, 1989, 8 (02) :195-200

[10] LANDAU THEORY OF CHARGE-DENSITY WAVES IN TRANSITION-METAL DICHALCOGENIDES [J].

MCMILLAN, WL .

PHYSICAL REVIEW B, 1975, 12 (04) :1187-1196

← 1 2 →