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Title: Bloch-Grüneisen nonlinearity of electron transport in GaAs/AlGaAs heterostructures

We report on nonlinear transport measurements in a two-dimensional electron gas hosted in GaAs/AlGaAs heterostructures. Upon application of direct current, the low-temperature differential resistivity acquires a positive correction, which exhibits a pronounced maximum followed by a plateau. With increasing temperature, the nonlinearity diminishes and disappears. These observations can be understood in terms of a crossover from the Bloch-Gr¨uneisen regime to the quasielastic scattering regime as the electrons are heated by direct current. Calculations considering interaction of electrons with acoustic phonons provide reasonable description of our experimental findings.
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. National Academy of Sciences of Ukraine (NASU), Kiev (Ukraine)
  2. Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab)
  3. Univ. of Minnesota, Minneapolis, MN (United States)
  4. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Report Number(s):
SAND-2017-7643J
Journal ID: ISSN 2469-9950; PRBMDO; 655524
Grant/Contract Number:
AC04-94AL85000; FG0205-ER46212; NA-0003525
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 96; Journal Issue: 8; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1399514
Alternate Identifier(s):
OSTI ID: 1375837

Raichev, O. E., Hatke, A. T., Zudov, M. A., and Reno, J. L.. Bloch-Grüneisen nonlinearity of electron transport in GaAs/AlGaAs heterostructures. United States: N. p., Web. doi:10.1103/PhysRevB.96.081407.
Raichev, O. E., Hatke, A. T., Zudov, M. A., & Reno, J. L.. Bloch-Grüneisen nonlinearity of electron transport in GaAs/AlGaAs heterostructures. United States. doi:10.1103/PhysRevB.96.081407.
Raichev, O. E., Hatke, A. T., Zudov, M. A., and Reno, J. L.. 2017. "Bloch-Grüneisen nonlinearity of electron transport in GaAs/AlGaAs heterostructures". United States. doi:10.1103/PhysRevB.96.081407. https://www.osti.gov/servlets/purl/1399514.
@article{osti_1399514,
title = {Bloch-Grüneisen nonlinearity of electron transport in GaAs/AlGaAs heterostructures},
author = {Raichev, O. E. and Hatke, A. T. and Zudov, M. A. and Reno, J. L.},
abstractNote = {We report on nonlinear transport measurements in a two-dimensional electron gas hosted in GaAs/AlGaAs heterostructures. Upon application of direct current, the low-temperature differential resistivity acquires a positive correction, which exhibits a pronounced maximum followed by a plateau. With increasing temperature, the nonlinearity diminishes and disappears. These observations can be understood in terms of a crossover from the Bloch-Gr¨uneisen regime to the quasielastic scattering regime as the electrons are heated by direct current. Calculations considering interaction of electrons with acoustic phonons provide reasonable description of our experimental findings.},
doi = {10.1103/PhysRevB.96.081407},
journal = {Physical Review B},
number = 8,
volume = 96,
place = {United States},
year = {2017},
month = {8}
}