Zero-differential conductance of two-dimensional electrons in crossed electric and magnetic fields

Быков, А. А.; Byrnes, Sean; Dietrich, Scott; Vitkalov, Sergey; Marchishin, I. V.; Дмитриев, Д. В.

doi:10.1103/physrevb.87.081409

Cited by 9 publications

(4 citation statements)

References 46 publications

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“…Landau quantization produces a remarkable effect on Joule heating of two dimensional (2D) electrons [5][6][7][8] . The heating forces 2D electrons into exotic electronic states in which voltage (current) does not depend on current [9][10][11] (voltage 12 ). In contrast to the linear response at low temperatures kT < hω c (SdH, QHE), the quantization affects Joule heating in a significantly broader temperature range.…”

Section: Introductionmentioning

confidence: 99%

Magnetointersubband resistance oscillations in GaAs quantum wells placed in a tilted magnetic field

et al. 2016

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The magnetotransport of highly mobile 2D electrons in wide GaAs single quantum wells with three populated subbands placed in titled magnetic fields is studied. The bottoms of the lower two subbands have nearly the same energy while the bottom of the third subband has a much higher energy (E1 ≈ E2 << E3). At zero in-plane magnetic fields magneto-intersubband oscillations (MISO) between the i th and j th subbands are observed and obey the relation ∆ij = Ej −Ei = k·hωc, where ωc is the cyclotron frequency and k is an integer. An application of in-plane magnetic field produces dramatic changes in MISO and the corresponding electron spectrum. Three regimes are identified. Athωc ≪ ∆12 the in-plane magnetic field increases considerably the gap ∆12, which is consistent with the semi-classical regime of electron propagation. In contrast at strong magnetic fieldshωc ≫ ∆12 relatively weak oscillating variations of the electron spectrum with the in-plane magnetic field are observed. Athωc ≈ ∆12 the electron spectrum undergoes a transition between these two regimes through magnetic breakdown. In this transition regime MISO with odd quantum number k terminate, while MISO corresponding to even k evolve continuously into the high field regime corresponding tohωc ≫ ∆12.

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Section: Introductionmentioning

confidence: 99%

Magnetointersubband resistance oscillations in GaAs quantum wells placed in a tilted magnetic field

et al. 2016

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“…In contrast to classical Joule heating, quantal heating leads to outstanding nonlinear transport properties of highly mobile 2D electrons, driving them into exotic nonlinear states in which voltage (current) does not depend on current 4 (voltage) 5 . Quantal heating also provides significant contributions to nonlinear effects at high driving frequencies -a very important topic in contemporary research 6 .…”

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confidence: 99%

“…The most essential property of quantal heating is the conservation of the total number of quantum states participating in the electron transport and, thus, the conservation of the overall broadening of the electron distribution 2,3 . In contrast to classical Joule heating, quantal heating leads to outstanding nonlinear transport properties of highly mobile 2D electrons, driving them into exotic nonlinear states in which voltage (current) does not depend on current 4 (voltage) 5 . Quantal heating also provides significant contributions to nonlinear effects at high driving frequencies -an important topic in contemporary research 6 .…”

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confidence: 99%

Dynamics of quantal heating in electron systems with discrete spectra

et al. 2015

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“…Finite electric fields produce remarkable nonlinear effects. At small electric fields Joule heating strongly modifies the 2D electron transport [3][4][5][6] yielding exotic electronic states in which voltage (current) does not depend on current [7][8][9] (voltage 10 ). Application of a stronger electric field E produces spectacular resistance oscillations.…”

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confidence: 99%

Resistance oscillations of two-dimensional electrons in crossed electric and tilted magnetic fields

2016

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Effect of dc electric field on transport of highly mobile 2D electrons is studied in wide GaAs single quantum wells placed in titled magnetic fields. The study shows that in perpendicular magnetic field resistance oscillates due to electric field induced Landau-Zener transitions between quantum levels that corresponds to geometric resonances between cyclotron orbits and periodic modulation of electron density of states. Magnetic field tilt inverts these oscillations. Surprisingly the strongest inverted oscillations are observed at a tilt corresponding to nearly absent modulation of the electron density of states in regime of magnetic breakdown of semiclassical electron orbits. This phenomenon establishes an example of quantum resistance oscillations due to Landau quantization, which occur in electron systems with a constant density of states.

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Zero-differential conductance of two-dimensional electrons in crossed electric and magnetic fields

Cited by 9 publications

References 46 publications

Magnetointersubband resistance oscillations in GaAs quantum wells placed in a tilted magnetic field

Magnetointersubband resistance oscillations in GaAs quantum wells placed in a tilted magnetic field

Dynamics of quantal heating in electron systems with discrete spectra

Resistance oscillations of two-dimensional electrons in crossed electric and tilted magnetic fields

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