Plaut, AS and Pinczuk, A and Dennis, BS and Hirjibehedin, CF and Pfeiffer, LN and West, KW (2004) Linear collapse of the depolarization shift in very dilute two-dimensional hole gases. APPL PHYS LETT , 85 (23) 5625 - 5627. 10.1063/1.1833562.
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Very dilute two-dimensional hole systems were probed by resonant inelastic light scattering. This extremely high mobility system occurs in AlxGa1-xAs/GaAs quantum wells designed specifically for their light insensitivity. We find that the depolarization shift in intersubband transitions decreases linearly for hole densities below p=6.6x10(10) cm(-2), dropping to zero below p=1x10(10) cm(-2). (C) 2004 American Institute of Physics.
|Title:||Linear collapse of the depolarization shift in very dilute two-dimensional hole gases|
|Keywords:||QUANTUM-WELL STRUCTURES, COLLECTIVE EXCITATIONS, CYCLOTRON-RESONANCE, PARTICLE, SYSTEM|
|UCL classification:||UCL > School of BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology|
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