Premium
Evidence of two disorder scales in Ga(AsBi)
Author(s) -
Imhof Sebastian,
Wagner Christian,
Chernikov Alexej,
Koch Martin,
Kolata Kolja,
Köster Niko S.,
Chatterjee Sangam,
Koch Stephan W.,
Lu Xiangfeng,
Johnson Shane R.,
Beaton Daniel A.,
Tiedje Thomas,
Rubel Oleg,
Thränhardt Angela
Publication year - 2011
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201000835
Subject(s) - scale (ratio) , photoluminescence , cluster (spacecraft) , statistical physics , energy (signal processing) , materials science , physics , computer science , optoelectronics , quantum mechanics , programming language
Abstract Temperature‐dependent photoluminescence in a Ga(AsBi) structure is modelled in an excitonic hopping model and compared to experiment. It is shown that theory and experiment cannot be brought into agreement when using a single energy scale. Thus, a second energy scale is introduced, resulting in a good agreement between theory and experiment. The two scales are identified with spatially large alloy disorder and additional cluster states subdividing this first scale.