Far-infrared transmission studies in disordered and ordered Ga0.52In0.48P

被引:13
作者
Alsina, F [1 ]
Webb, JD [1 ]
Mascarenhas, A [1 ]
Geisz, JF [1 ]
Olson, JM [1 ]
Duda, A [1 ]
机构
[1] Natl Renewable Energy Lab, Golden, CO 80401 USA
来源
PHYSICAL REVIEW B | 1999年 / 60卷 / 03期
关键词
D O I
10.1103/PhysRevB.60.1484
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The vibrational properties of both disordered and ordered Ga0.52In0.48P alloys have been studied by room-temperature polarized far-infrared transmission at normal incidence. For the disordered alloy, besides the main transverse optical mode at 332 cm(-1), we observe a weak transverse optical mode at 372 cm(-1). The transmission spectrum of the ordered alloy recorded with light polarized in the plane containing the ordering axis and the growth direction shows, in addition to the transverse modes, an extra band at 354 cm(-1). This is a signature of the reduced trigonal symmetry that we relate to a quasilongitudinal mode. [S0163-1829(99)04128-4].
引用
收藏
页码:1484 / 1487
页数:4
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