
Proceedings Paper
Introducing Fourier-domain mobility spectrum analysis (FMSA) to deduce multi-component carrier mobility and densityFormat | Member Price | Non-Member Price |
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Paper Abstract
Compounds and heterostructures in optical devices often host multiple carrier species that contribute simultaneously to the
total electrical conduction, making it difficult to distinguish the characteristics of each type. Here a Fourier-domain
Mobility Spectrum Analysis (FMSA)1 is introduced to sort the conductivity contributions of different carrier species from
magnetotransport measurements. Using simulated magnetotransport data from 0 to 15 T of a simple initial trial spectrum,
FMSA iteratively adjusts the spectral points in either the mobility domain or its Fourier reciprocal space to fit a mobility
range spanning over three orders of magnitude (μ = 670 ~ 1,000,000 cm2/V·s). With its alternating local and global
adjustments, FMSA is able to recover the mobility distribution of test data, as verified in convergence plots of the total
error as a function of iteration number. This technique resolves the mobility spectra as well or better than competing MSA
techniques with a simple and elegant algorithm, while precisely resolving the smoothness and width of mobility peaks
without artificial broadening.
Paper Details
Date Published: 8 February 2015
PDF: 8 pages
Proc. SPIE 9370, Quantum Sensing and Nanophotonic Devices XII, 937030 (8 February 2015); doi: 10.1117/12.2179825
Published in SPIE Proceedings Vol. 9370:
Quantum Sensing and Nanophotonic Devices XII
Manijeh Razeghi; Eric Tournié; Gail J. Brown, Editor(s)
PDF: 8 pages
Proc. SPIE 9370, Quantum Sensing and Nanophotonic Devices XII, 937030 (8 February 2015); doi: 10.1117/12.2179825
Show Author Affiliations
M. Grayson, Northwestern Univ. (United States)
Published in SPIE Proceedings Vol. 9370:
Quantum Sensing and Nanophotonic Devices XII
Manijeh Razeghi; Eric Tournié; Gail J. Brown, Editor(s)
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