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Linear collapse of the depolarization shift in very dilute two-dimensional hole gases

Plaut, AS; Pinczuk, A; Dennis, BS; Hirjibehedin, CF; Pfeiffer, LN; 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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Abstract

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.

Type:Article
Title:Linear collapse of the depolarization shift in very dilute two-dimensional hole gases
DOI:10.1063/1.1833562
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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