Spectroscopy of voltage dependence of oxygen movement in YBa2Cu3O7-δ -: art. no. 180506

被引：7
|
作者：
Huerth, SH
Hallen, HD
Moeckly, B
机构：
[1] N Carolina State Univ, Raleigh, NC 27695 USA
[2] Conductus Inc, Sunnyvale, CA 94085 USA
来源：
PHYSICAL REVIEW B | 2003年 / 67卷 / 18期
关键词：
D O I：
10.1103/PhysRevB.67.180506
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Injection of few-volt electrons at room temperature can displace oxygen atoms in the lattice of yttrium barium cuprate (YBCO). The metal cladding of a near-field scanning optical microscope (NSOM) probe tip is used as a tunnel electrode for locally injecting the electrons with controlled energies. The NSOM optical signal is used to detect changes in the local oxygen concentration. The data support bond breaking in a Franck-Condon-like effect causing enhanced diffusion of oxygen atoms in the lattice. The voltage dependence is consistent with the band structure of YBCO.
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页数：4
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