Record number :
1000614
Title of article :
Cross-sectional scanning tunneling microscopy observation of atomic arrangement in triple period-A type ordered AlInAs allo
Author/Authors :
Shunsuke Ohkouchi )، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Pages :
5
From page :
9
To page :
13
Abstract :
Atomic arrangements in a triple-period (TP)-A type ordered AlInAs layer were investigated by a cross-sectional scanning tunneling microscope (XSTM) for the first time. The distributions of cation atoms in the ordered layer were distinguished using the tunneling spectroscopy method. The XSTM image on the cleaved surface of the ordered AlInAs layer revealed the presence of ragged short-range ordering domains comprising periodic structures aligned along the [1 1 ¯2] direction on the whole surface, separated by three-fold periodicity along the [1 1 1] direction. This three-fold periodic structure comprises units of In–In–Al and/or In–Al–Al. That is, the TP-A type ordered AlInAs layer comprises two kinds of three-fold periodic planes; one is composed of two InAs-like planes and one AlAs-like plane, and the other is composed of one InAs-like plane and two AlAs-like planes. In addition, a local two-fold ordered structure having alternating InAs-like and AlAs-like planes can be observed in the STM image
Keywords :
Scanning tunneling microscopy , AlInAs , Ordering , surface reconstruction
Journal title :
Applied Surface Science
Journal title :
Applied Surface Science
Serial Year :
2005
Link To Document :
بازگشت