Excitonic spin-splitting in quantum wells with a tilted magnetic field

Autor(es)

Fernandes dos Santos, L. ^[1] ; Castelano, L. K. ^[2] ; Padilha, J. X. ^[2] ; Pusep, Y. ^[3] ; Marques, G. E. ^[2] ; Smirnov, D. ^[4] ; Bakarov, A. K. ^[5] ; Toropov, A. I. ^[5] ; Lopez-Richard, V. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Fed Santa Catarina, BR-89065300 Blumenau, SC - Brazil

^[2] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Carlos, SP - Brazil

^[3] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil

^[4] Natl High Magnet Field Lab, Tallahassee, FL 32312 - USA

^[5] Russian Acad Sci, Inst Semicond Phys, Novosibirsk 630090 - Russia

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PHYSICS-CONDENSED MATTER; v. 28, n. 5 FEB 10 2016.
• Citações Web of Science: 1

Resumo

This work aims to investigate the effects of magnetic field strength and direction on the electronic properties and optical response of GaAs/AlGaAs-based heterostructures. An investigation of the excitonic spin-splitting of a disordered multiple quantum well embedded in a wide parabolic quantum well is presented. The results for polarization-resolved photoluminescence show that the magnetic field dependencies of the excitonic spin-splitting and photoluminescence linewidth are crucially sensitive to magnetic field orientation. Our experimental results are in good agreement with the calculated Zeeman splitting obtained by the Luttinger model, which predicts a hybridization of the spin character of states in the valence band under tilted magnetic fields. (AU)

• Processo FAPESP: 12/13052-6 - Propriedades de transporte e computação quântica em nanoestruturas
• Beneficiário: Leonardo Kleber Castelano
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 12/02655-1 - Sistemas nano-ópticos e dispositivos nano-eletrônicos
• Beneficiário: Victor Lopez Richard
• Linha de fomento: Auxílio à Pesquisa - Regular