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Scanning tunnelling microscopy study of the charge-density wave in Hf-doped 1T-TaS2

Authors :
Yoichi Miyahara
Hajime Ozaki
H Bando
K. Koizumi
Source :
Journal of Physics: Condensed Matter. 12:4353-4363
Publication Year :
2000
Publisher :
IOP Publishing, 2000.

Abstract

The effect of doping with Hf atoms on the nearly commensurate (NC) charge-density-wave (CDW) structures of 1T-TaS2 was investigated using scanning tunnelling microscopy (STM) at room temperature, for levels of substitution of Hf for Ta up to 6.9%. It was found that the Hf atom introduces a point defect to the CDW superlattice at the CDW domain boundary for lower contents. For Hf contents higher than 1%, the CDW superlattice melted and a distorted structure was observed instead of the usual CDW superlattice. The change of the CDW structure observed by STM was compared with the change of the ρ-T characteristics.

Details

ISSN :
1361648X and 09538984
Volume :
12
Database :
OpenAIRE
Journal :
Journal of Physics: Condensed Matter
Accession number :
edsair.doi...........6f0eeffb9878d8a87049f8d19b4df395
Full Text :
https://doi.org/10.1088/0953-8984/12/19/306