Intersubband exchange interaction induced by optically excited electron spins in GaAs/AlGaAs quantum wells

K. Morita; H. Sanada; S. Matsuzaka; Y. Ohno; H. Ohno

doi:10.1063/1.3118584

Intersubband exchange interaction induced by optically excited electron spins in GaAs/AlGaAs quantum wells

K. Morita, H. Sanada, S. Matsuzaka, Y. Ohno, H. Ohno

Leadership

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Spin-dependent intersubband excitonic interactions have been investigated in GaAs/AlGaAs quantum wells by two-color pump and probe spectroscopy. We generated spin-polarized electrons in the lowest subband by resonant excitation of the heavy-hole exciton (E1 -HH1) and observed polarization-dependent broadening of the second-subband exciton resonance (E2 -HH2 and E2 -LH1). The exchange interaction between the first and the second-subband excitons is found to play a crucial role in polarization-dependent spectral modulation as well as spin-independent Coulomb screening.

Original language	English
Article number	162104
Journal	Applied Physics Letters
Volume	94
Issue number	16
DOIs	https://doi.org/10.1063/1.3118584
Publication status	Published - 2009 May 6

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.3118584

Fingerprint Dive into the research topics of 'Intersubband exchange interaction induced by optically excited electron spins in GaAs/AlGaAs quantum wells'. Together they form a unique fingerprint.

Cite this

@article{75bc57934daa4b7496f057a082d807c2,

title = "Intersubband exchange interaction induced by optically excited electron spins in GaAs/AlGaAs quantum wells",

abstract = "Spin-dependent intersubband excitonic interactions have been investigated in GaAs/AlGaAs quantum wells by two-color pump and probe spectroscopy. We generated spin-polarized electrons in the lowest subband by resonant excitation of the heavy-hole exciton (E1 -HH1) and observed polarization-dependent broadening of the second-subband exciton resonance (E2 -HH2 and E2 -LH1). The exchange interaction between the first and the second-subband excitons is found to play a crucial role in polarization-dependent spectral modulation as well as spin-independent Coulomb screening.",

author = "K. Morita and H. Sanada and S. Matsuzaka and Y. Ohno and H. Ohno",

year = "2009",

month = may,

day = "6",

doi = "10.1063/1.3118584",

language = "English",

volume = "94",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "16",

}

TY - JOUR

T1 - Intersubband exchange interaction induced by optically excited electron spins in GaAs/AlGaAs quantum wells

AU - Morita, K.

AU - Sanada, H.

AU - Matsuzaka, S.

AU - Ohno, Y.

AU - Ohno, H.

PY - 2009/5/6

Y1 - 2009/5/6

N2 - Spin-dependent intersubband excitonic interactions have been investigated in GaAs/AlGaAs quantum wells by two-color pump and probe spectroscopy. We generated spin-polarized electrons in the lowest subband by resonant excitation of the heavy-hole exciton (E1 -HH1) and observed polarization-dependent broadening of the second-subband exciton resonance (E2 -HH2 and E2 -LH1). The exchange interaction between the first and the second-subband excitons is found to play a crucial role in polarization-dependent spectral modulation as well as spin-independent Coulomb screening.

AB - Spin-dependent intersubband excitonic interactions have been investigated in GaAs/AlGaAs quantum wells by two-color pump and probe spectroscopy. We generated spin-polarized electrons in the lowest subband by resonant excitation of the heavy-hole exciton (E1 -HH1) and observed polarization-dependent broadening of the second-subband exciton resonance (E2 -HH2 and E2 -LH1). The exchange interaction between the first and the second-subband excitons is found to play a crucial role in polarization-dependent spectral modulation as well as spin-independent Coulomb screening.

UR - http://www.scopus.com/inward/record.url?scp=65449136706&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=65449136706&partnerID=8YFLogxK

U2 - 10.1063/1.3118584

DO - 10.1063/1.3118584

M3 - Article

AN - SCOPUS:65449136706

VL - 94

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 16

M1 - 162104

ER -