Observation of magnetically induced effective-mass enhancement of quasi-2D excitons.
We present the first measurements of the dispersion relation of a quasi-2D magnetoexciton. We demonstrate that the magnetoexciton effective mass is determined by the coupling between the center-of-mass motion and internal structure and becomes overwhelmingly larger than the sum of the electron and hole masses in high magnetic fields.
Butov
L V
LV
Materials Sciences Division, E. O. Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
Lai
C W
CW
Chemla
D S
DS
Lozovik
Y E
YE
Campman
K L
KL
Gossard
A C
AC