SCANNING TUNNELING MICROSCOPY OF THE LINEAR-CHAIN COMPOUNDS NBSE3, TAS3, AND TASE3

被引：7
作者：
SLOUGH, CG
GIAMBATTISTA, B
MCNAIRY, WW
COLEMAN, RV
机构：
[1] Department of Physics, University of Virginia, Charlottesville
来源：
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS | 1990年 / 8卷 / 01期
关键词：
D O I：
10.1116/1.577026
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Studies of NbSe3, TaS3, and TaSe3at 77 and 4.2 K with scanning tunneling microscopy (STM) resolve the linear chain structure in all three compounds and detect the superimposed charge-density wave (CDW) modulations present in NbSe3and orthorhombic TaS3. Two independent CDWs on separate chains are observed in NbSe3and the STM amplitudes are proportional to the amount of Fermi surface obliteration induced by each CDW. In orthorhombic TaS3coupled CDW modulations are observed on two of the three surface chains and these are 180° out of phase. In TaSe3the two surface chains per unit cell are clearly resolved and the surface Se atoms give a STM deflection proportional to the surface atomic heights. © 1990, American Vacuum Society. All rights reserved.
引用
收藏
页码：490 / 494
页数：5
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