Observation of high Rydberg states of one-dimensional excitons in GaAs quantum wires by magnetophotoluminescence excitation spectroscopy

Makoto Okano; Yoshihiko Kanemitsu; Shaoqiang Chen; Toshimitsu Mochizuki; Masahiro Yoshita; Hidefumi Akiyama; Loren N. Pfeiffer; Ken W. West

doi:10.1103/PhysRevB.86.085312

Observation of high Rydberg states of one-dimensional excitons in GaAs quantum wires by magnetophotoluminescence excitation spectroscopy

Makoto Okano, Yoshihiko Kanemitsu, Shaoqiang Chen, Toshimitsu Mochizuki, Masahiro Yoshita, Hidefumi Akiyama, Loren N. Pfeiffer, Ken W. West

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

14 Scopus citations

Abstract

We have studied the higher Rydberg states of the ground exciton in T-shaped GaAs quantum wires with low-temperature photoluminescence excitation spectroscopy under magnetic fields. The peak of the second even-parity Rydberg state appears and grows in intensity at the onset of the one-dimensional (1D) continuum edge under strong magnetic fields. In stark contrast to the ground exciton, it shows significantly low zero-field oscillator strength and a large diamagnetic shift. These characteristic features are attributed to the extremely weakly bound wave function of the second Rydberg state, reflecting the inherent and novel character of 1D excitons that was predicted theoretically.

Original language	English (US)
Article number	085312
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	86
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevB.86.085312
State	Published - Aug 16 2012
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.86.085312

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Okano, M., Kanemitsu, Y., Chen, S., Mochizuki, T., Yoshita, M., Akiyama, H., Pfeiffer, L. N., & West, K. W. (2012). Observation of high Rydberg states of one-dimensional excitons in GaAs quantum wires by magnetophotoluminescence excitation spectroscopy. Physical Review B - Condensed Matter and Materials Physics, 86(8), Article 085312. https://doi.org/10.1103/PhysRevB.86.085312

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abstract = "We have studied the higher Rydberg states of the ground exciton in T-shaped GaAs quantum wires with low-temperature photoluminescence excitation spectroscopy under magnetic fields. The peak of the second even-parity Rydberg state appears and grows in intensity at the onset of the one-dimensional (1D) continuum edge under strong magnetic fields. In stark contrast to the ground exciton, it shows significantly low zero-field oscillator strength and a large diamagnetic shift. These characteristic features are attributed to the extremely weakly bound wave function of the second Rydberg state, reflecting the inherent and novel character of 1D excitons that was predicted theoretically.",

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doi = "10.1103/PhysRevB.86.085312",

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AU - Okano, Makoto

AU - Kanemitsu, Yoshihiko

AU - Chen, Shaoqiang

AU - Mochizuki, Toshimitsu

AU - Yoshita, Masahiro

AU - Akiyama, Hidefumi

AU - Pfeiffer, Loren N.

AU - West, Ken W.

PY - 2012/8/16

Y1 - 2012/8/16

N2 - We have studied the higher Rydberg states of the ground exciton in T-shaped GaAs quantum wires with low-temperature photoluminescence excitation spectroscopy under magnetic fields. The peak of the second even-parity Rydberg state appears and grows in intensity at the onset of the one-dimensional (1D) continuum edge under strong magnetic fields. In stark contrast to the ground exciton, it shows significantly low zero-field oscillator strength and a large diamagnetic shift. These characteristic features are attributed to the extremely weakly bound wave function of the second Rydberg state, reflecting the inherent and novel character of 1D excitons that was predicted theoretically.

AB - We have studied the higher Rydberg states of the ground exciton in T-shaped GaAs quantum wires with low-temperature photoluminescence excitation spectroscopy under magnetic fields. The peak of the second even-parity Rydberg state appears and grows in intensity at the onset of the one-dimensional (1D) continuum edge under strong magnetic fields. In stark contrast to the ground exciton, it shows significantly low zero-field oscillator strength and a large diamagnetic shift. These characteristic features are attributed to the extremely weakly bound wave function of the second Rydberg state, reflecting the inherent and novel character of 1D excitons that was predicted theoretically.

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Observation of high Rydberg states of one-dimensional excitons in GaAs quantum wires by magnetophotoluminescence excitation spectroscopy

Abstract

All Science Journal Classification (ASJC) codes

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