Thermomagnetic effect in a two-dimensional electron system with an asymmetric quantizing potential

Pogosov, A. G.; Budantsev, M. V.; Kibis, O. V.; Pouydebasque, A.; Maude, D. K.; Portal, J. C.

doi:10.1103/physrevb.61.15603

Cited by 16 publications

(14 citation statements)

References 10 publications

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“…(6) together with Eqs. (10), (14), or (17) which demonstrate that the sign and magnitude of w SIA are determined by the products z ν1 ξ ν1 . The products are non-zero to the extent of asymmetry of the confinement potential and/or the doping profile and vanish for the absolutely symmetrical structure, where u(z) is an even function and ϕ ν is either even or odd function with respect to the QW center.…”

Section: Scattering By Optical Phononsmentioning

confidence: 81%

Electron scattering in quantum wells subjected to an in-plane magnetic field

Tarasenko

2008

Phys. Rev. B

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It is shown that the electron scattering by static defects, acoustic or optical phonons in quantum wells subjected to an in-plane magnetic field is asymmetric. The probability of scattering contains terms which are proportional to both the electron wave vector and the magnetic field components.The terms under study are caused by the lack of an inversion center in quantum wells due to structure or bulk inversion asymmetry although they are of pure diamagnetic origin. Such a magnetic field induced asymmetry of scattering can be responsible for a number of phenomena. In particular, the asymmetry of inelastic electron-phonon interaction leads to an electric current flow if only the electron gas is driven out of thermal equilibrium with the crystal lattice.

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Section: Scattering By Optical Phononsmentioning

confidence: 81%

Electron scattering in quantum wells subjected to an in-plane magnetic field

Tarasenko

2008

Phys. Rev. B

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“…Particularly, it takes place in nanostructures without an inversion center in the presence of a magnetic field, including asymmetric quantum wells, [9][10][11][12][13] chiral carbon nanotubes, [14][15][16] hybrid semiconductor/ferromagnet nanostructures, 17 and so on. For definiteness, let us consider such a simple nanostructure as a quantum well (QW).…”

Section: Introductionmentioning

confidence: 99%

Persistent current induced by quantum light

Kibis

2012

Phys. Rev. B

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It is demonstrated that the strong coupling of an electron gas to photons in systems with broken time-reversal symmetry results in bound electron-photon states which cannot be backscattered elastically. As a consequence, the electron gas can flow without dissipation. This quantum macroscopic phenomenon leads to the unconventional superconductivity which is analyzed theoretically for a two-dimensional electron system in a semiconductor quantum well exposed to an in-plane magnetic field.Comment: 6 pages, 2 figures; published versio

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“…where L(= 5µm) and ξ(≈ 100µm) are the device length and thermal relaxation length in high-mobility GaAs/AlGaAs systems [24,26], respectively. For electrical transport, we have used a standard ac/dc technique to measure both linear response conductivity (G 1,6 (V ds = 0)) and non-equilibrium differential conductivity (dI(V ds )/dV ), where V ds is the drain-source bias.…”

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confidence: 99%

Highly Enhanced Thermopower in Two-Dimensional Electron Systems at Millikelvin Temperatures

et al. 2009

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We report experimental observation of an unexpectedly large thermopower in mesoscopic two-dimensional (2D) electron systems in GaAs/AlGaAs heterostructures at sub-Kelvin temperatures and zero magnetic field. Unlike conventional nonmagnetic high-mobility 2D systems, the thermopower in our devices increases with decreasing temperature below 0.3 K, reaching values in excess of 100 microV/K, thus exceeding the free electron estimate by more than 2 orders of magnitude. With support from a parallel study of the local density of states, we suggest such a phenomenon to be linked to intrinsic localized states and many-body spin correlations in the system.

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Thermomagnetic effect in a two-dimensional electron system with an asymmetric quantizing potential

Cited by 16 publications

References 10 publications

Electron scattering in quantum wells subjected to an in-plane magnetic field

Electron scattering in quantum wells subjected to an in-plane magnetic field

Persistent current induced by quantum light

Highly Enhanced Thermopower in Two-Dimensional Electron Systems at Millikelvin Temperatures

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