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

Authors
UEDA E TANAKA S SATO M TAMASAKU K UCHIDA S
Citation
E. Ueda et al., WHAT FACTORS DETERMINE STM STS CHARACTERISTICS OF HIGH-T-C OXIDES/, Physica. C, Superconductivity, 249(1-2), 1995, pp. 181-186
Citations number
14
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
249
Issue
1-2
Year of publication
1995
Pages
181 - 186
Database
ISI
SICI code
0921-4534(1995)249:1-2<181:WFDSSC>2.0.ZU;2-J
Abstract
Results of STM/STS studies on single crystals of La2-xSrxCuO4 are pres ented. For analyses of STM/STS data of high-T-c oxides, a phenomenolog ical model is proposed, where the contribution of electrons with a wav e vector kappa to the tunneling current is mainly determined by the ka ppa-dependent ''form factor'' of the p(sigma) orbitals of surface oxyg ens 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 con sistent with the model.