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

Raichev, O. E.; Hatke, A. T.; Zudov, M. A.; Reno, J. L.

doi:10.1103/PhysRevB.96.081407

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

Journal Article · Tue Aug 22 00:00:00 EDT 2017 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.96.081407· OSTI ID:1399514

Raichev, O. E. ^[1]; Hatke, A. T. ^[2]; Zudov, M. A. ^[3]; Reno, J. L. ^[4]

National Academy of Sciences of Ukraine (NASU), Kiev (Ukraine)
Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab)
Univ. of Minnesota, Minneapolis, MN (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

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.

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Research Organization:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC04-94AL85000; FG0205-ER46212; NA-0003525

OSTI ID:: 1399514

Alternate ID(s):: OSTI ID: 1375837

Report Number(s):: SAND-2017-7643J; PRBMDO; 655524

Journal Information:: Physical Review B, Vol. 96, Issue 8; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 2 works

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