Terahertz Induced Photoconductivity of 2D Electron System in HEMT at Low Magnetic Field

Details Terahertz Induced Photoconductivity of 2D Electron System in HEMT at Low Magnetic Field Terahertz Induced Photoconductivity of 2D Electron System in HEMT at Low Magnetic Field

2004-11-12

arxiv.org/abs/cond-mat/0411356v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Presented at ICPS-27 (H5.177)

Scientific paper

10.1063/1.1994534

A few results of our study of two-dimensional electron system (2DES) in low magnetic fields in GaAs/GaAlAs heterostructures by cyclotron resonance (CR) and photoconductivity techniques are presented. We have first discovered "CR-vanishing effect"in 2DES as well-defined crevasse on CR line in low magnetic fields, when Hall resistance is not quantized. "CR-vanishing effect" indicates vanishing longitudinal resistance & conductivity in these magnetic fields. Observed "CR-vanishing effect" demonstrates new correlated state of electrons in 2DES.

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