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We present a model for microwave photoconductivity of two-dimensional electron systems in a magnetic field which describes the effects of strong microwave and steady-state electric fields. Using this model, we derive an analytical formula…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 V. Ryzhii , R. Suris

We report the longitudinal resistivity and Hall effect measurements on the noncentrosymmetric superconducting Mg$_{12-\delta}$Ir$_{19}$B$_{16}$ samples with different critical transition temperatures. A strong temperature dependence of the…

Superconductivity · Physics 2010-09-06 Gang Mu , Huan Yang , Hai-Hu Wen

The influence of microwave radiation (1.2-140 GHz) on resistance of high-mobility two-dimensional electron gas in GaAs quantum wells is studied. Two series of microwave-induced magnetoresistance oscillations periodic in 1/B were observed…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 A. A. Bykov , A. V. Goran , D. R. Islamov , A. K. Bakarov , Jing-qiao Zhang , Sergey Vitkalov

Microwave-radiation induced giant magnetoresistance oscillations recently discovered in high-mobility two-dimensional electron systems in a magnetic field, are analyzed theoretically. Multiphoton-assisted impurity scatterings are shown to…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 X. L. Lei , S. Y. Liu

A two dimensional electron system without spatial inversion symmetry develops a sample specific dc voltage when exposed to a microwave radiation at low temperature. We investigate this photovoltaic (PV) effect, in the case where spatial…

Mesoscale and Nanoscale Physics · Physics 2008-09-30 A. Chepelianskii , S. Guéron , F. Pierre , A. Cavanna , B. Etienne , H. Bouchiat

Recent experiment [S.I. Dorozhkin et al., Phys. Rev. Lett. 102, 036602 (2009)] on quantum Hall structures with strongly asymmetric contact configuration discovered microwave-induced photocurrent and photovoltage magnetooscillations in the…

Mesoscale and Nanoscale Physics · Physics 2009-09-28 I. A. Dmitriev , S. I. Dorozhkin , A. D. Mirlin

We calculate the contribution of the photon-assisted interaction of electrons with leaky interface phonons to the dissipative dc photoconductivity of a two-dimensional electron system in a magnetic field. The calculated photoconductivity as…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 V. Ryzhii

We develop a theory of magnetooscillations in the photoconductivity of a two-dimensional electron gas observed in recent experiments. The effect is governed by a change of the electron distribution function induced by the microwave…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 I. A. Dmitriev , M. G. Vavilov , I. L. Aleiner , A. D. Mirlin , D. G. Polyakov

We report on the temperature dependence of microwave-induced resistance oscillations in high-mobility two-dimensional electron systems. We find that the oscillation amplitude decays exponentially with increasing temperature, as…

Mesoscale and Nanoscale Physics · Physics 2009-02-17 A. T. Hatke , M. A. Zudov , L. N. Pfeiffer , K. W. West

To study the influence of microwave irradiation on two-dimensional electrons, we apply a method based on capacitance measurements in GaAs quantum well samples where the gate covers a central part of the layer. We find that the capacitance…

Mesoscale and Nanoscale Physics · Physics 2016-08-17 A. D. Levin , G. M. Gusev , O. E. Raichev , Z. S. Momtaz , A. K. Bakarov

Using Hall photovoltage measurements, we demonstrate that an anomalous Hall-voltage can be induced in few layer WTe2 under circularly polarized light illumination. By applying a bias voltage along different crystal axes, we find that the…

In a two-dimensional electron system, microwave radiation may induce giant resistance oscillations. Their origin has been debated controversially and numerous mechanisms based on very different physical phenomena have been invoked. However…

Mesoscale and Nanoscale Physics · Physics 2016-10-20 S. I. Dorozhkin , A. A. Kapustin , V. Umansky , K. von Klitzing , J. H. Smet

We predict a magnetoresistance induced by the interfacial Rashba spin-orbit coupling in normal metal|ferromagnetic insulator bilayer. It depends on the angle between current and magnetization directions identically to the "spin Hall…

Mesoscale and Nanoscale Physics · Physics 2015-06-22 Vahram L. Grigoryan , Wei Guo , Gerrit E. W. Bauer , Jiang Xiao

Magnetoresistance of two-dimensional electron systems with several occupied subbands oscillates owing to periodic modulation of the probability of intersubband transitions by the quantizing magnetic field. In addition to previous…

Mesoscale and Nanoscale Physics · Physics 2009-12-08 S. Wiedmann , N. C. Mamani , G. M. Gusev , O. E. Raichev , A. K. Bakarov , J. C. Portal

We study the Hall conductivity of a two-dimensional electron gas under an inhomogeneous magnetic field $B(x)$. First, we prove using the quantum kinetic theory that an odd magnetic field can lead to a purely nonlinear Hall response. Second,…

Mesoscale and Nanoscale Physics · Physics 2021-10-28 Botsz Huang , Ali G. Moghaddam , Jorge I. Facio , Ching-Hao Chang

The influence of electron-phonon interaction on magnetotransport in two-dimensional electron systems under microwave irradiation is studied theoretically. Apart from the phonon-induced resistance oscillations which exist in the absence of…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 O. E. Raichev

We provide an article-extract which points out that a microwave-induced modification in the resistance occurs at relatively "high" magnetic fields where the radiation is incapable of producing inter-Landau level excitations and, therefore,…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 R. G. Mani

The theoretical description and experimental verification of resonant phenomena in electromagnetic fields generated in the near zone of all-dielectric rectangular thin sub wavelength frames, subjected to an incident microwave, is…

Applied Physics · Physics 2024-10-08 Aleksandr Shvartsburg , Sergey Artekha

Using very-high mobility GaAs/AlGaAs 2D electron Hall bar samples, we have experimentally studied the photoresistance/photovoltaic oscillations induced by microwave irradiation in the regime where both 1/B and B-periodic oscillations can be…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 K. Stone , C. L. Yang , Z. Q. Yuan , R. R. Du , L. N. Pfeiffer , K. W. West

High mobility two-dimensional electron systems exhibit vanishing resistance over broad magnetic field intervals upon excitation with microwaves, with a characteristic reduction of the resistance with increasing radiation intensity at the…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 R. G. Mani , V. Narayanamurti , K. von Klitzing , J. H. Smet , W. B. Johnson , V. Umansky