Anomalous temperature dependence of the cyclotron mass in n-type CdS at ultra-high magnetic fields

Y. Imanaka; N. Miura; H. Nojiri

doi:10.1016/S0921-4526(97)00927-7

Anomalous temperature dependence of the cyclotron mass in n-type CdS at ultra-high magnetic fields

Y. Imanaka, N. Miura, H. Nojiri

Institute for Materials Research (IMR) (institute affiliation only)

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

8 Citations (Scopus)

Abstract

We have investigated the temperature dependence in detail of the cyclotron resonance in n-type CdS at ultra-high magnetic fields where the cyclotron resonance energy becomes larger than the LO phonon energy. Anomalous temperature dependence of the effective mass was observed near the resonant polaron region at wavelengths of 16.9, 23.1 and 28.0 μm. At low temperatures, we observed many distinct absorption peaks in the low-field side of the cyclotron resonance, which is ascribed to phonon-assisted harmonic transitions between the donor states. These phenomena are reminiscent of the phase transition of the polaron ground state energy, which was predicted by Peeters and Devreese for polar materials at high magnetic fields.

Original language	English
Pages (from-to)	328-332
Number of pages	5
Journal	Physica B: Condensed Matter
Volume	246-247
DOIs	https://doi.org/10.1016/S0921-4526(97)00927-7
Publication status	Published - 1998 May 29

Keywords

Cyclotron resonance
High magnetic field
Phase transition
n-type CdS

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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title = "Anomalous temperature dependence of the cyclotron mass in n-type CdS at ultra-high magnetic fields",

abstract = "We have investigated the temperature dependence in detail of the cyclotron resonance in n-type CdS at ultra-high magnetic fields where the cyclotron resonance energy becomes larger than the LO phonon energy. Anomalous temperature dependence of the effective mass was observed near the resonant polaron region at wavelengths of 16.9, 23.1 and 28.0 μm. At low temperatures, we observed many distinct absorption peaks in the low-field side of the cyclotron resonance, which is ascribed to phonon-assisted harmonic transitions between the donor states. These phenomena are reminiscent of the phase transition of the polaron ground state energy, which was predicted by Peeters and Devreese for polar materials at high magnetic fields.",

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T1 - Anomalous temperature dependence of the cyclotron mass in n-type CdS at ultra-high magnetic fields

AU - Imanaka, Y.

AU - Miura, N.

AU - Nojiri, H.

PY - 1998/5/29

Y1 - 1998/5/29

N2 - We have investigated the temperature dependence in detail of the cyclotron resonance in n-type CdS at ultra-high magnetic fields where the cyclotron resonance energy becomes larger than the LO phonon energy. Anomalous temperature dependence of the effective mass was observed near the resonant polaron region at wavelengths of 16.9, 23.1 and 28.0 μm. At low temperatures, we observed many distinct absorption peaks in the low-field side of the cyclotron resonance, which is ascribed to phonon-assisted harmonic transitions between the donor states. These phenomena are reminiscent of the phase transition of the polaron ground state energy, which was predicted by Peeters and Devreese for polar materials at high magnetic fields.

AB - We have investigated the temperature dependence in detail of the cyclotron resonance in n-type CdS at ultra-high magnetic fields where the cyclotron resonance energy becomes larger than the LO phonon energy. Anomalous temperature dependence of the effective mass was observed near the resonant polaron region at wavelengths of 16.9, 23.1 and 28.0 μm. At low temperatures, we observed many distinct absorption peaks in the low-field side of the cyclotron resonance, which is ascribed to phonon-assisted harmonic transitions between the donor states. These phenomena are reminiscent of the phase transition of the polaron ground state energy, which was predicted by Peeters and Devreese for polar materials at high magnetic fields.

KW - Cyclotron resonance

KW - High magnetic field

KW - Phase transition

KW - n-type CdS

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DO - 10.1016/S0921-4526(97)00927-7

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EP - 332

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

ER -

Anomalous temperature dependence of the cyclotron mass in n-type CdS at ultra-high magnetic fields

Abstract

Keywords

ASJC Scopus subject areas

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