Published September 2006 | Version v1
Journal article Metadata-only

Interwell exciton relaxation in semimagnetic asymmetric double quantum wells

Creators

  • 1. Inst. of Solid State Physics RAS, Chernogolovka (Russian Federation)
  • 2. Lehrstuhl Werkstoffe der Elektrotechnik, Univ. Duisburg-Essen, Duisburg (Germany)

Description

Possibility of a magnetic field control of spectral and polarization characteristics of exciton recombination is examined in Cd(Mg, Mn)Te-based asymmetric double quantum wells. At low fields, exciton transition in semimagnetic well is higher in energy than that in nonmagnetic well and interwell exciton relaxation is fast. Strong dependence of the total circular polarization degree on the heavy-light hole splitting in the nonmagnetic well is found and attributed to the spin dependent interwell tunneling controlled by exciton spin relaxation

Abstract (Russian)

Рассматривается влияние магнитного поля на спектральные и поляризационные характеристики экситонной рекомбинации в Cd(Mg, Mn)Te асимметричных двойных квантовых ямах. При малых полях экситонные переходы в полумагнитной яме выше по энергии, чем в немагнитной, а межъямная экситонная релаксация происходит быстрее. Обнаружена сильная зависимость степени циркулярной поляризации от расщепления дырок на тяжелые и легкие в немагнитных ямах. Предлагается объяснение этого явления

Additional details

Publishing Information

Journal Title
Pis'ma v Zhurnal Ehksperimental'noj i Teoreticheskoj Fiziki
Journal Volume
84
Journal Issue
5-6
Journal Page Range
p. 403-406
ISSN
0370-274X
CODEN
PZETAB

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
39058739
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ASYMMETRY; CADMIUM COMPOUNDS; EMISSION SPECTRA; ENERGY-LEVEL TRANSITIONS; EXCITONS; GROUND STATES; MAGNESIUM COMPOUNDS; MAGNETIC FIELDS; MANGANESE COMPOUNDS; PHOTOLUMINESCENCE; POLARIZATION; QUANTUM WELLS; RECOMBINATION; RELAXATION; SPIN; TELLURIUM COMPOUNDS; TUNNEL EFFECT
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; ANGULAR MOMENTUM; EMISSION; ENERGY LEVELS; LUMINESCENCE; NANOSTRUCTURES; PARTICLE PROPERTIES; PHOTON EMISSION; QUASI PARTICLES; SPECTRA; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
14 refs., 3 figs.