SPECTROSCOPIC SIGNATURES OF PHASE-TRANSITIONS IN A CHARGE-DENSITY-WAVE SYSTEM - 1T-TAS2

被引：62

作者：

DARDEL, B ^{[1
]}

GRIONI, M ^{[1
]}

MALTERRE, D ^{[1
]}

WEIBEL, P ^{[1
]}

BAER, Y ^{[1
]}

LEVY, F ^{[1
]}

机构：

[1] ECOLE POLYTECH FED LAUSANNE,PHYS APPL LAB,CH-1015 LAUSANNE,SWITZERLAND

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.46.7407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photoelectron spectroscopy with high-energy resolution has been utilized to investigate the charge-density wave (CDW) in 1T-TaS2 between 20 and 360 K. Constant binding-energy curves reveal discontinuities in the temperature dependence of the photoelectron spectral function rho(E), and demonstrate that sudden modifications of the electronic structure, namely, in the vicinity of the Fermi level E(F), mark the first-order CDW transitions. In the commensurate phase, below 180 K, rho(E(F)) reflects the formation of a correlation pseudogap. On disordered surfaces, however, the long-range coherence typical of the commensurate phase is lost, and a normal metallic behavior is recovered.

引用

页码：7407 / 7412

页数：6

共 37 条

[1] THEORY OF TEMPERATURE-DEPENDENCE OF ELECTRONIC BAND STRUCTURES [J].

ALLEN, PB ;

HEINE, V .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1976, 9 (12) :2305-2312

[2] TEMPERATURE-DEPENDENCE OF THE DIRECT GAP OF SI AND GE [J].

ALLEN, PB ;

CARDONA, M .

PHYSICAL REVIEW B, 1983, 27 (08) :4760-4769

[3] THERMAL AND TRANSPORT EVIDENCE FOR A PHASE-TRANSITION IN 1T-TAS2 OBSERVED AT 282-K UPON WARMING [J].

BAYLISS, SC ;

GHORAYEB, AM ;

GUY, DRP .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1984, 17 (21) :L533-L537

[4] DIRECT OBSERVATION OF CHARGE-DENSITY WAVES BY MOLECULAR-BEAM DIFFRACTION [J].

BOATO, G ;

CANTINI, P ;

COLELLA, R .

PHYSICAL REVIEW LETTERS, 1979, 42 (24) :1635-1638

[5] LOW-TEMPERATURE SUPERSTRUCTURES OF 1T-TASE2 AND 2H-TASE2 [J].

BROUWER, R ;

JELLINEK, F .

PHYSICA B & C, 1980, 99 (1-4) :51-55

[6] 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

[7] CONDUCTION-BAND STRUCTURE AND CHARGE-DENSITY WAVES IN 1T-TAS2 [J].

CLAESSEN, R ;

BURANDT, B ;

CARSTENSEN, H ;

SKIBOWSKI, M .

PHYSICAL REVIEW B, 1990, 41 (12) :8270-8277

[8] CHARGE-DENSITY WAVES OBSERVED WITH A TUNNELING MICROSCOPE [J].

COLEMAN, RV ;

DRAKE, B ;

HANSMA, PK ;

SLOUGH, G .

PHYSICAL REVIEW LETTERS, 1985, 55 (04) :394-397

[9] 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

[10] LOW-TEMPERATURE ELECTRICAL-PROPERTIES OF 1T-TAS2 [J].

DISALVO, FJ ;

GRAEBNER, JE .

SOLID STATE COMMUNICATIONS, 1977, 23 (11) :825-828

← 1 2 3 4 →