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Title: Observation of high Rydberg states of one-dimensional excitons in GaAs quantum wires by magnetophotoluminescence excitation spectroscopy
Authors: Okano, Makoto  KAKEN_id
Kanemitsu, Yoshihiko  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-0788-131X (unconfirmed)
Chen, Shaoqiang
Mochizuki, Toshimitsu
Yoshita, Masahiro
Akiyama, Hidefumi
Pfeiffer, Loren N.
West, Ken W.
Author's alias: 岡野, 真人
金光, 義彦
Issue Date: 16-Aug-2012
Publisher: American Physical Society
Journal title: Physical Review B
Volume: 86
Issue: 8
Thesis number: 085312
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.
Rights: ©2012 American Physical Society
URI: http://hdl.handle.net/2433/159454
DOI(Published Version): 10.1103/PhysRevB.86.085312
Appears in Collections:Journal Articles

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