Miniband Transport in a Two-Dimensional Electron Gas with a Strong Periodic Unidirectional Potential Modulation

Journal Article · Thu Aug 07 00:00:00 EDT 2014 · Solid State Communications

DOI:https://doi.org/10.1016/j.ssc.2014.07.023· OSTI ID:1183082

Lyo, Sungkwun K. ^[1]; Pan, Wei ^[2]

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1. Univ. of California, Irvine, CA (United States)
2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

In this paper, we study the Bloch oscillations of a two-dimensional electron gas with a strong periodic potential-modulation and miniband transport along the field at low temperatures, assuming a free motion in the transverse direction. The dependence of the current on the field, the electron density, and the temperature is investigated by using a relaxation-time approximation for inelastic scattering. Moreover, for a fixed total scattering rate, the field dependence of the current is sensitive to the ratio of the elastic and inelastic scattering rates in contrast with the recent result of a multiband but otherwise similar model with a weak potential modulation.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: AC04-94AL85000
• OSTI ID: 1183082
• Alternate ID(s): OSTI ID: 1776191
• Report Number(s): SAND-2014-16699J; 534592
• Journal Information: Solid State Communications, Vol. 196; ISSN 0038-1098
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
A. semiconductors
C. two-dimensional systems
D. High-field transport