Optical Aharonov-Bohm effect on Wigner molecules in type-II semiconductor quantum dots

Rin Okuyama, Mikio Eto, Hiroyuki Hyuga

研究成果: Article査読

10 被引用数 (Scopus)

抄録

We theoretically examine the magnetoluminescence from a trion and a biexciton in a type-II semiconductor quantum dot, in which holes are confined inside the quantum dot and electrons are in a ring-shaped region surrounding the quantum dot. First, we show that two electrons in the trion and biexciton are strongly correlated to each other, forming a Wigner molecule: Since the relative motion of electrons is frozen, they behave as a composite particle whose mass and charge are twice those of a single electron. As a result, the energy of the trion and biexciton oscillates as a function of magnetic field with half the period of the single-electron Aharonov-Bohm oscillation. Next, we evaluate the photoluminescence. Both the peak position and peak height change discontinuously at the transition of the many-body ground state, implying a possible observation of the Wigner molecule by the optical experiment.

本文言語English
論文番号195311
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
83
19
DOI
出版ステータスPublished - 2011 5 9

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

フィンガープリント

「Optical Aharonov-Bohm effect on Wigner molecules in type-II semiconductor quantum dots」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル