Electron cyclotron resonance in In1-xMnxAs

Y. H. Matsuda; T. Ikaida; N. Miura; M. A. Zudov; J. Kono; H. Munekata

doi:10.1016/S1386-9477(01)00086-8

Electron cyclotron resonance in In_1-xMn_xAs

Y. H. Matsuda, T. Ikaida, N. Miura, M. A. Zudov, J. Kono, H. Munekata

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

8 Scopus citations

Abstract

We have made the first observation of cyclotron resonance in In_1-xMn_xAs alloys. Our data unambiguously show that the effective mass of electrons systematically decreases with increasing Mn concentration x. Using an 8-band k·p method, we demonstrate that this mass reduction is a combined effect of (1) a decrease of the band gap and (2) an effective reduction of the momentum matrix element P due to the sp-d hybridization. We also observed a significant mass decrease with decreasing temperature, its temperature coefficient slightly depending on x. The temperature dependent sp-d-interaction-enhanced Landau level spin splitting cannot account for this unusual temperature dependence.

Original language	English (US)
Pages (from-to)	219-223
Number of pages	5
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	10
Issue number	1-3
DOIs	https://doi.org/10.1016/S1386-9477(01)00086-8
State	Published - May 2001
Externally published	Yes

Bibliographical note

Funding Information:
This work was partially supported by Grant-in-Aid for Scientific Research on Priority Area “Spin Controlled Semiconductor Nanostructures” (No. 11125205) from the Ministry of Education, Science, Sports, and Culture, and the NEDO International Joint Research Grant Program.

Keywords

Cyclotron resonance
Diluted magnetic semicondustors
High magnetic fields

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title = "Electron cyclotron resonance in In1-xMnxAs",

abstract = "We have made the first observation of cyclotron resonance in In1-xMnxAs alloys. Our data unambiguously show that the effective mass of electrons systematically decreases with increasing Mn concentration x. Using an 8-band k·p method, we demonstrate that this mass reduction is a combined effect of (1) a decrease of the band gap and (2) an effective reduction of the momentum matrix element P due to the sp-d hybridization. We also observed a significant mass decrease with decreasing temperature, its temperature coefficient slightly depending on x. The temperature dependent sp-d-interaction-enhanced Landau level spin splitting cannot account for this unusual temperature dependence.",

keywords = "Cyclotron resonance, Diluted magnetic semicondustors, High magnetic fields",

author = "Matsuda, {Y. H.} and T. Ikaida and N. Miura and Zudov, {M. A.} and J. Kono and H. Munekata",

note = "Funding Information: This work was partially supported by Grant-in-Aid for Scientific Research on Priority Area “Spin Controlled Semiconductor Nanostructures” (No. 11125205) from the Ministry of Education, Science, Sports, and Culture, and the NEDO International Joint Research Grant Program.",

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T1 - Electron cyclotron resonance in In1-xMnxAs

AU - Matsuda, Y. H.

AU - Ikaida, T.

AU - Miura, N.

AU - Zudov, M. A.

AU - Kono, J.

AU - Munekata, H.

N1 - Funding Information: This work was partially supported by Grant-in-Aid for Scientific Research on Priority Area “Spin Controlled Semiconductor Nanostructures” (No. 11125205) from the Ministry of Education, Science, Sports, and Culture, and the NEDO International Joint Research Grant Program.

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AB - We have made the first observation of cyclotron resonance in In1-xMnxAs alloys. Our data unambiguously show that the effective mass of electrons systematically decreases with increasing Mn concentration x. Using an 8-band k·p method, we demonstrate that this mass reduction is a combined effect of (1) a decrease of the band gap and (2) an effective reduction of the momentum matrix element P due to the sp-d hybridization. We also observed a significant mass decrease with decreasing temperature, its temperature coefficient slightly depending on x. The temperature dependent sp-d-interaction-enhanced Landau level spin splitting cannot account for this unusual temperature dependence.

KW - Cyclotron resonance

KW - Diluted magnetic semicondustors

KW - High magnetic fields

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