Radiation-assisted magnetotransport in two-dimensional electron gas systems: appearance of zero resistance states

Abstract

Zero-resistance states (ZRS) are normally associated with superconducting and quantum Hall phases. Experimental detection of ZRS in two-dimensional electron gas (2DEG) systems irridiated by microwave(MW) radiation in a magnetic field has been quite a surprise. We develop a semiclassical transport formalism to explain the phenomena. We find a sequence of Zero-Resistance States (ZRS) inherited from the suppression of Shubnikov-de Haas (SdH) oscillations under the influence of high-frequency and large amplitude microwave radiation. Furthermore, the ZRS are well pronounced and persist up to broad intervals of magnetic field as observed in experiments on microwave illuminated 2DEG systems.

Optical radiation induced chaotic dynamics of electrons in a uniform magnetic field

“…Numerical simulations have been performed [6,69,70] to propose appropriate setups for the observation of ZB experimentally. Later on, it was found that such trembling motion of electron can also appear in crystalline solid materials with their band structure described by a two band model [8,54,57,58,60,61,71,72]. The notion of zitterbewegung plays very important role in understanding the dynamical features investigated in this paper.…”

“…In recent years, there has been much interest in simulations of relativistic quantum effects using different physical set-ups [5,6], in which parameter tunability allows access of different physical regimes. On the other hand, radiation-matter interaction has significant effects on the electron dynamics [7][8][9][10][11][12][13][14]. For instance, when a high mobility two dimensional electron gas (2DEG) is irradiated by microwave radiation in a weak magnetic field, the longitudinal magneto-resistance exhibits giant oscillations.…”

“…For instance, when a high mobility two dimensional electron gas (2DEG) is irradiated by microwave radiation in a weak magnetic field, the longitudinal magneto-resistance exhibits giant oscillations. Significant features of these effects have been the observation of zero-resistance states (ZRS) [7,8], negative magneto-conductivity [10], frequency quenching of microwave-induced resistance oscillations [15], etc in these systems. Novel quantum oscillations have also been observed in graphene at microwave frequencies [16].…”

Determination of the Dependence of Transverse Electrical Conductivity and Magnetoresistance Oscillations on Temperature in Heterostructures Based on Quantum Wells

“…In a series of experiments conducted in the last decade, it was discovered that the kinetic properties of a quantum well subjected to deformation, temperature, ultra-high frequency electromag-netic field, deformation and light in the applied magnetic field provide even richer information for the theory of quantum physics. In particular, in the works [4,5], in the quantum well GaAs, the semiclassical theory of magnetoresistance oscillation during irradiation with microwaves is analyzed. In a quantizing magnetic field, the specific magnetoresistance of the system demonstrates Shubnikov-de Haase oscillations at low temperatures.…”

Millimeter wave radiation-induced magnetoresistance oscillations in the high quality GaAs/AlGaAs 2D electron system under bichromatic excitation

“…Such oscillations exhibit a non-linear variation in the oscillatory amplitude with radiation power, 15,25,36 sensitivity in the oscillatory amplitude to the orientation of the linearly polarized radiation with respect to the device, 19,[25][26][27][28]35 etc. Many theoretical explanations have been proposed to help understand associated phenomena, [36][37][38][39][40][41][42][43][45][46][47][48][49][50][51][53][54][55][56][57][58][59][60][61][62][63][64] including, for example, mechanisms based on (a) the scattering of electrons by phonons and impurities between Landau levels, 37,40,42,43 (b) the periodic motion of electron orbit centers under photoexcitation, 38,48 , (c) the inelastic model, 45 and (d) the re-collision of cyclotron electrons from scattering centers. 63 Previous work 6,…”