WHAT FACTORS DETERMINE STM/STS CHARACTERISTICS OF HIGH-T-C OXIDES

被引：0
作者：
UEDA, E
TANAKA, S
SATO, M
TAMASAKU, K
UCHIDA, S
机构：
[1] NAGOYA UNIV,FAC SCI,DEPT PHYS,CHIKUSA KU,NAGOYA,AICHI 46401,JAPAN
[2] UNIV TOKYO,SUPERCONDUCT RES COURSE,BUNKYO KU,TOKYO 113,JAPAN
来源：
PHYSICA C | 1995年 / 249卷 / 1-2期
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D O I：
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中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Results of STM/STS studies on single crystals of La2-xSrxCuO4 are presented. For analyses of STM/STS data of high-T-c oxides, a phenomenological model is proposed, where the contribution of electrons with a wave vector kappa to the tunneling current is mainly determined by the kappa-dependent ''form factor'' of the p(sigma) orbitals of surface oxygens in the antibonding band formed by the Cu 3d(x2-y2) and O 2p(sigma) orbitals. Various characteristics of STM/STS data are shown to be consistent with the model.
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页码：181 / 186
页数：6
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