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

研究成果: Article査読

13 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号085312
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
86
8
DOI
出版ステータスPublished - 2012 8月 16
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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