Evolution of local electronic states from a metal to a correlated insulator in a NiS2-xSex solid solution -: art. no. 161103

被引:16
作者
Iwaya, K [1 ]
Kohsaka, Y
Satow, S
Hanaguri, T
Miyasaka, S
Takagi, H
机构
[1] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan
[2] Univ Tokyo, Dept Adv Mat Sci, Chiba 2778651, Japan
[3] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan
[4] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan
来源
PHYSICAL REVIEW B | 2004年 / 70卷 / 16期
关键词
D O I
10.1103/PhysRevB.70.161103
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The evolution of local electronic states in NiS2-xSex pyrite as a bandwidth-controlled metal-insulator transition (MIT) approached from the metallic side is explored by scanning tunneling microscopy/spectroscopy (STM/STS). Atomically resolved images of Se/S zigzag chains are observed on top of the cubic (100) surface, and a narrowing of the quasiparticle band near the Fermi level is clearly identified in tunneling spectra. In marked contrast to MIT's control by doping, the local electronic states are found to be spatially homogeneous even in the vicinity of the MIT.
引用
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页码:1 / 4
页数:4
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