Exchange energy enhancedg-factors obtained from Landau fan diagrams at low magnetic fields | Zendy

Shintaro Nomura | Zendy; Hiroyuki Tamura | Zendy; M. Yamaguchi | Zendy; Tatsushi Akazaki | Zendy; Y. Hirayama | Zendy

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Exchange energy enhancedg-factors obtained from Landau fan diagrams at low magnetic fields

Author(s) -

Shintaro Nomura,

Hiroyuki Tamura,

M. Yamaguchi,

Tatsushi Akazaki,

Y. Hirayama

Publication year - 2013

Publication title -

physical review b

Language(s) - English

Resource type - Journals

eISSN - 1538-4489

pISSN - 1098-0121

DOI - 10.1103/physrevb.87.085318

Subject(s) - physics , order (exchange) , energy (signal processing) , condensed matter physics , coulomb , electron , exchange interaction , ferromagnetism , quantum mechanics , finance , economics

We report on measurement of the electron-hole effective g-factors (geff*) depending on electron filling factors ν from magnetophotoluminescence spectroscopy at low magnetic fields B<1 T in low electron density regime in a GaAs/Al0.33Ga0.67As-gated quantum well. Enhancement of geff* at odd ν is observed. The oscillatory behavior of geff* is compared with results of a theory that takes into account the lowest-order exchange interaction of the screened Coulomb interaction. Good agreement of the observed geff* with theoretical results is obtained except ν at around 3. The enhancement of geff* at even ν with decrease in electron density has not been observed

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