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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

We use the high sensitivity to magnetic flux of mesoscopic conductance fluctuations in large quantum dots to investigate changes in the two-dimensional electron dispersion caused by an in-plane magnetic field. In particular, changes in…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 D. M. Zumbuhl , J. B. Miller , C. M. Marcus , V. I. Fal'ko , T. Jungwirth , J. S. Harris

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

Experimental results on microwave-induced magnetoresistance oscillation in two-dimensional electron systems show a similar behavior of these systems regarding temperature and microwave frequency. It is found that these oscillations tend to…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Jesus Inarrea

The effect of microwave radiation on low-temperature electron magnetotransport in a square antidot lattice with a period of d = 0.8 micrometer based on a GaAs quantum well with two occupied energy subbands E1 and E2 is investigated. It is…

Mesoscale and Nanoscale Physics · Physics 2021-01-07 A. A. Bykov , I. S. Strygin , A. V. Goran , E. E. Rodyakina , D. V. Nomokonov , I. V. Marchishin , S. Abedi , S. A. Vitkalov

We observe oscillatory magnetoresistance in double quantum wells under microwave irradiation. The results are explained in terms of the influence of subband coupling on the frequency-dependent photoinduced part of the electron distribution…

Mesoscale and Nanoscale Physics · Physics 2008-09-30 S. Wiedmann , G. M. Gusev , O. E. Raichev , T. E. Lamas , A. K. Bakarov , J. C. Portal

We review various aspects of magnetoresistance in (quasi-)twodimensional systems subject to an in-plane magnetic field. Concentrating on single-particle effects, three mechanisms leading to magnetoresistance are discussed: the orbital…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Julia S. Meyer , Vladimir I. Fal'ko , B. L. Altshuler

It is shown that, although the major feature of the microwave-induced magnetoresistance oscillations in two-dimensional (2D) electron systems is insensitive to the behavior of the elastic scattering in the photon-assisted impurity…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 X. L. Lei

We report on magneto-oscillations in differential resistivity of a two-dimensional electron system subject to intense microwave radiation. The period of these oscillations is determined not only by microwave frequency but also by its…

Mesoscale and Nanoscale Physics · Physics 2010-05-31 M. Khodas , H. -S. Chiang , A. T. Hatke , M. A. Zudov , M. G. Vavilov , L. N. Pfeiffer , K. W. West

In the quasi two-dimensional GaAs/AlGaAs system, we investigate the effect of rotating \textit{in-situ} the electric field of linearly polarized microwaves relative to the current, on the microwave-radiation-induced magneto-resistance…

Mesoscale and Nanoscale Physics · Physics 2012-09-25 R. G. Mani , A. N. Ramanayaka , W. Wegscheider

The magnetoresistance oscillations, which occur in a two-dimensional electron system exposed to strong microwave radiation when the microwave frequency $\omega$ coincides with the n-th subharmonic of the cyclotron frequency $\omega_c$ have…

Mesoscale and Nanoscale Physics · Physics 2009-02-24 S. I. Dorozhkin , J. H. Smet , K. von Klitzing , L. N. Pfeiffer , K. W. West

We present a detailed theoretical investigation on the radiation induced giant magnetoresistance oscillations recently discovered in high-mobility two-dimensional electron gas. Electron interactions with impurities, transverse and…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 X. L. Lei

We have measured the magneto-resistance of a two-dimensional electron gas (2DEG) under continuous microwave irradiation as a function of electron density and mobility tuned with a metallic top-gate. In the entire range of density and…

Strongly Correlated Electrons · Physics 2009-11-11 B. Simovic , C. Ellenberger , K. Ensslin , Wegscheider

We discuss possible origins of recently discovered microwave induced photoresistance oscillations in very-high-electron-mobility two-dimensional electron systems. We show that electrodynamic effects -- the radiative decay, plasma…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 S. A. Mikhailov

Electromagnetic response of a finite-width two-dimensional electron stripe is theoretically studied. It is shown that retardation and radiative effects substantially modify the absorption spectrum of the system at microwave frequencies,…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 S. A. Mikhailov , N. A. Savostianova

We theoretically analyzed the microwave-induced modification of the Hall magnetoresistivity in high mobility two-dimensional electron systems. These systems present diagonal magnetoresistivity oscillations and zero-resistance states when…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Jesus Inarrea

Effects of microwave radiation on magnetoresistance are analyzed in a balance-equation scheme that covers regimes of inter- and intra-Landau level processes and takes account of photon-asissted electron transitions as well as…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 X. L. Lei , S. Y. Liu

We analyzed the magnetoresistivity of a two-dimensional electron system excited by microwave radiation in a regime of high intensities and low frequencies. In such a regime, recent experiments show that different features appear in the…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Jesus Inarrea

We have studied experimentally the influence of a parallel magnetic field ($B_{//}$) on microwave-induced resistance oscillations (MIRO) and zero-resistance states (ZRS) previously discovered in a high-mobility 2D electron system. We have…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 C. L. Yang , R. R. Du , L. N. Pfeiffer , K. W. West

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