Room Temperature Stark-Ladder Transitions in GaAs/AlAs Superlattices with Different Miniband Widths
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概要
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We have studied room temperature Stark-ladder transitions in GaAs/AlAs stuperlattices with different miniband widths. Measured dependence of field-induced energy shifts of the Stark-ladder transitions on superlattice period agrees with theory. We have also shown dependence of quantum coherence on superlattice parameters, and observed the highest quantum coherence of 11 periods in the wide-miniband superlattice. These results give clear evidence that Wannier-Stark localization occurs over a wide range of miniband widths, and that is responsible for a negative differential conductivity mechanism.
- 社団法人応用物理学会の論文
- 1991-05-01
著者
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FUJIWARA Kozo
Institute for Materials Research (IMR), Tohoku University
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KAWASHIMA Kenji
ATR Optical and Radio Communications Research Laboratories
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FUJIWARA Kenzo
ATR Optical and Radio Communications Research Laboratories
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KOBAYASHI Kikuo
ATR Optical and Radio Communications Research Laboratories
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Yamamoto Takenori
Deptarment Of Electrical And Electronic Engineering Toyohashi University Of Technology
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Yamamoto Tokujirou
Department Of Materials Science And Engineering Kyoto University
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Fujiwara K
Institute For Materials Research (imr) Tohoku University
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YAMAMOTO Teiji
ATR Optical and Radio Communications Research Laboratories
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SIGETA Mitsuhiro
ATR Optical and Radio Communications Research Laboratories
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Yamamoto Takayoshi
The Institute Of Scientific And Industrial Research Osaka University
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