Tunneling of Bloch electrons through a small-size contact

被引:1
|
作者
Khotkevych-Sanina, N. V. [1 ]
Kolesnichenko, Yu A. [1 ]
机构
[1] Natl Acad Sci Ukraine, BI Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine
关键词
STM; Bloch waves; Tunneling; Surface states; Local density of states; Conductance; MICROSCOPY; SURFACES; STATES;
D O I
10.1016/j.physe.2014.01.008
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
For the first time the tunneling of Bloch waves through a contact of small diameter is studied in the framework of a model of an inhomogeneous tunnel delta-barrier of low transparency. The electron tunneling from bulk-mode states into the surface states localized near the contact interface is considered. An asymptotically exact expression (in the inverse height of the barrier) is derived for the conductance of the system. Prospects for the application of the obtained results to the theory of scanning tunneling microscopy are discussed. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:133 / 138
页数:6
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