Dielectric functions and interband transitions of In1&#8722

Title
Dielectric functions and interband transitions of In1− xAlxSb alloys

Title
xAlxSb alloys
Authors
J. J. YoonT. J. KimY. W. JungD. E. AspnesY. D. KimH. J. KimY. C. Chang신상훈송진동
Keywords
InAlSb; Dielectric functions; ellipsometry
Issue Date
2010-09
Publisher
Applied physics letters
Citation
VOL 97, NO 11, 111902-1-111902-3
Abstract
Pseudodielectric functions 〈ε〉 of In1−xAlxSb ternary alloy films were determined from 1.5 to 6.0 eV by spectroscopic ellipsometry. Overlayer effects were minimized by performing in situ chemical etching to more accurately determine intrinsic bulk dielectric responses. Critical-point (CP) energies of structures were determined from numerically calculated second energy derivatives. Where necessary, Brillouin-zone origins were identified by electronic band structure calculations done with the linear augmented Slater-type orbital method. These calculations also showed increasing separation of the E2 and E2′ CP structures with increasing Al-composition
URI
http://pubs.kist.re.kr/handle/201004/37955
ISSN
0003-6951
Appears in Collections:
KIST Publication > Article
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