Exciton spin injection in CdTe/Cd1-xMnxTe double quantum wells

K. Kayanuma; M. C. Debnath; I. Souma; Z. Chen; A. Murayama; M. Kobayashi; H. Miyazaki; Y. Oka

doi:10.1002/1521-3951(200201)229:2<761::AID-PSSB761>3.0.CO;2-F

Exciton spin injection in CdTe/Cd_1-xMn_xTe double quantum wells

K. Kayanuma, M. C. Debnath, I. Souma, Z. Chen, A. Murayama, M. Kobayashi, H. Miyazaki, Y. Oka

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

Spin injection processes of excitons were studied by time-resolved photoluminescence in double quantum wells consisting of Cd_0.95Mn_0.05Te and CdTe layers. Selective excitation of the magnetic and non-magnetic wells confirms the dominant spin injection process from the magnetic well to the non-magnetic, well. The exciton spin injection from the magnetic quantum well of Cd_0.95Mn_0.05Te arises with an injection time of 10 ps and induces a transient spin polarization with the degree of 0.20 in the non-magnetic well of CdTe. The exciton spin relaxation time in the CdTe well was found to be sufficiently longer than the exciton lifetime of 38 ps.

Original language	English
Pages (from-to)	761-764
Number of pages	4
Journal	Physica Status Solidi (B) Basic Research
Volume	229
Issue number	2
DOIs	https://doi.org/10.1002/1521-3951(200201)229:2<761::AID-PSSB761>3.0.CO;2-F
Publication status	Published - 2002
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1002/1521-3951(200201)229:2<761::AID-PSSB761>3.0.CO;2-F

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title = "Exciton spin injection in CdTe/Cd1-xMnxTe double quantum wells",

abstract = "Spin injection processes of excitons were studied by time-resolved photoluminescence in double quantum wells consisting of Cd0.95Mn0.05Te and CdTe layers. Selective excitation of the magnetic and non-magnetic wells confirms the dominant spin injection process from the magnetic well to the non-magnetic, well. The exciton spin injection from the magnetic quantum well of Cd0.95Mn0.05Te arises with an injection time of 10 ps and induces a transient spin polarization with the degree of 0.20 in the non-magnetic well of CdTe. The exciton spin relaxation time in the CdTe well was found to be sufficiently longer than the exciton lifetime of 38 ps.",

author = "K. Kayanuma and Debnath, {M. C.} and I. Souma and Z. Chen and A. Murayama and M. Kobayashi and H. Miyazaki and Y. Oka",

year = "2002",

doi = "10.1002/1521-3951(200201)229:2<761::AID-PSSB761>3.0.CO;2-F",

language = "English",

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pages = "761--764",

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TY - JOUR

T1 - Exciton spin injection in CdTe/Cd1-xMnxTe double quantum wells

AU - Kayanuma, K.

AU - Debnath, M. C.

AU - Souma, I.

AU - Chen, Z.

AU - Murayama, A.

AU - Kobayashi, M.

AU - Miyazaki, H.

AU - Oka, Y.

PY - 2002

Y1 - 2002

N2 - Spin injection processes of excitons were studied by time-resolved photoluminescence in double quantum wells consisting of Cd0.95Mn0.05Te and CdTe layers. Selective excitation of the magnetic and non-magnetic wells confirms the dominant spin injection process from the magnetic well to the non-magnetic, well. The exciton spin injection from the magnetic quantum well of Cd0.95Mn0.05Te arises with an injection time of 10 ps and induces a transient spin polarization with the degree of 0.20 in the non-magnetic well of CdTe. The exciton spin relaxation time in the CdTe well was found to be sufficiently longer than the exciton lifetime of 38 ps.

AB - Spin injection processes of excitons were studied by time-resolved photoluminescence in double quantum wells consisting of Cd0.95Mn0.05Te and CdTe layers. Selective excitation of the magnetic and non-magnetic wells confirms the dominant spin injection process from the magnetic well to the non-magnetic, well. The exciton spin injection from the magnetic quantum well of Cd0.95Mn0.05Te arises with an injection time of 10 ps and induces a transient spin polarization with the degree of 0.20 in the non-magnetic well of CdTe. The exciton spin relaxation time in the CdTe well was found to be sufficiently longer than the exciton lifetime of 38 ps.

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ER -

Exciton spin injection in CdTe/Cd_1-xMn_xTe double quantum wells

Abstract

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