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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - High-field Zeeman contribution to the trion binding energy
AU - Vanhoucke, Tony
AU - Hayne, M
AU - Henini, Mohamed
AU - Moshchalkov, Victor V
N1 - © 2002 The American Physical Society
PY - 2002/1/15
Y1 - 2002/1/15
N2 - We examine the role of the Zeeman interaction in determining the bound states of the trion at magnetic fields up to 50 T. Polarization-sensitive photoluminescence measurements on the singlet state of the positively charged trion (X+) in GaAs quantum wells demonstrate a 60% enhancement of the g factor compared to that of the neutral exciton (X-0) in the same sample. This leads to a situation in very high fields where the Zeeman splitting of X+ is sufficiently large to determine whether a state is bound or not, and so calls for a reexamination of what is meant by the binding energy of few particle systems.
AB - We examine the role of the Zeeman interaction in determining the bound states of the trion at magnetic fields up to 50 T. Polarization-sensitive photoluminescence measurements on the singlet state of the positively charged trion (X+) in GaAs quantum wells demonstrate a 60% enhancement of the g factor compared to that of the neutral exciton (X-0) in the same sample. This leads to a situation in very high fields where the Zeeman splitting of X+ is sufficiently large to determine whether a state is bound or not, and so calls for a reexamination of what is meant by the binding energy of few particle systems.
KW - POSITIVELY CHARGED EXCITONS
KW - GAAS QUANTUM-WELLS
KW - 2-DIMENSIONAL HOLE SYSTEMS
KW - HIGH MAGNETIC-FIELDS
KW - SPIN
U2 - 10.1103/PhysRevB.65.041307
DO - 10.1103/PhysRevB.65.041307
M3 - Journal article
VL - 65
SP - -
JO - Physical review B
JF - Physical review B
SN - 1550-235X
IS - 4
M1 - 041307
ER -