WEAK PINNING AND HEXATIC ORDER IN A DOPED 2-DIMENSIONAL CHARGE-DENSITY-WAVE SYSTEM

被引：36

作者：

DAI, HJ ^{[1
]}

CHEN, HF ^{[1
]}

LIEBER, CM ^{[1
]}

机构：

[1] COLUMBIA UNIV,DEPT APPL PHYS,NEW YORK,NY 10027

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.66.3183

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Scanning-tunneling microscopy has been used to characterize the effects of Nb impurities on the incommensurate charge-density-wave (CDW) phase in 1T-TaS2. Real- and reciprocal-space data indicate that disorder in the CDW is due to dislocations and small random rotations of the CDW. The dislocations destroy translational order; however, calculations show that the orientational order is long range. These results are consistent with weak pinning and suggest the possibility of a hexatic CDW phase. The similarity of our data to results obtained for other two-dimensional systems is discussed.

引用

收藏

页码：3183 / 3186

页数：4

相关论文

共 30 条

[1] THEORY OF SIZE EFFECTS IN DEPINNING OF CHARGE-DENSITY WAVES [J].

BARDEEN, J .

PHYSICAL REVIEW LETTERS, 1990, 64 (19) :2297-2299

[2] SCANNING TUNNELING MICROSCOPY INVESTIGATIONS OF THE LOCAL ELECTRONIC AND STRUCTURAL EFFECTS OF IRON SUBSTITUTION IN TANTALUM DISULFIDE [J].

CHEN, HF ;

WU, XL ;

LIEBER, CM .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1990, 112 (09) :3326-3332

[3] PINNING BY OXYGEN VACANCIES IN HIGH-TC SUPERCONDUCTORS [J].

CHUDNOVSKY, EM .

PHYSICAL REVIEW LETTERS, 1990, 65 (24) :3060-3062

[4] HEXATIC VORTEX GLASS IN DISORDERED SUPERCONDUCTORS [J].

CHUDNOVSKY, EM .

PHYSICAL REVIEW B, 1989, 40 (16) :11355-11357

[5] SCANNING TUNNELLING MICROSCOPY OF CHARGE-DENSITY WAVES IN TRANSITION-METAL CHALCOGENIDES [J].

COLEMAN, RV ;

GIAMBATTISTA, B ;

HANSMA, PK ;

JOHNSON, A ;

MCNAIRY, WW ;

SLOUGH, CG .

ADVANCES IN PHYSICS, 1988, 37 (06) :559-644

[6] PHASE SLIPS AND THE INSTABILITY OF THE FUKUYAMA-LEE-RICE MODEL OF CHARGE-DENSITY WAVES [J].

COPPERSMITH, SN .

PHYSICAL REVIEW LETTERS, 1990, 65 (08) :1044-1047

[7] EFFECTS OF DOPING ON CHARGE-DENSITY WAVES IN LAYER COMPOUNDS [J].

DISALVO, FJ ;

WILSON, JA ;

BAGLEY, BG ;

WASZCZAK, JV .

PHYSICAL REVIEW B, 1975, 12 (06) :2220-2235

[8] DYNAMICS OF CHARGE-DENSITY WAVE .1. IMPURITY PINNING IN A SINGLE CHAIN [J].

FUKUYAMA, H ;

LEE, PA .

PHYSICAL REVIEW B, 1978, 17 (02) :535-541

[9] SCANNING TUNNELING MICROSCOPY OF NBSE3 AND ORTHORHOMBIC TAS3 [J].

GAMMIE, G ;

HUBACEK, JS ;

SKALA, SL ;

BROCKENBROUGH, RT ;

TUCKER, JR ;

LYDING, JW .

PHYSICAL REVIEW B, 1989, 40 (14) :9529-9532

[10] SIZE EFFECTS AND CHARGE-DENSITY-WAVE PINNING IN NBSE3 - COMMENT [J].

GILL, JC .

PHYSICAL REVIEW LETTERS, 1990, 65 (02) :271-271