Coherence of two-dimensional electron-hole systems: Spontaneous breaking of continuous symmetries: A review

Moskalenko, S. A.; Liberman, Michael A.; Moskalenko, E. S.; Dumanov, E. V.; Podlesny, I. V.

doi:10.1134/s1063783413080210

Cited by 7 publications

(2 citation statements)

References 127 publications

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“…Despite the fact that a detailed equilibrium does not exist, the system can be divided into macroscopic subsystems, in which a local (dynamic) “quasi‐equilibrium” occurs, non‐equilibrium subsystems can be in a “quasi‐equilibrium” state long enough to be able to use the concept of temperature, and a BEC can occur in the subsystem itself. To quasi‐equilibrium boson systems can be attributed exciton‐polariton condensates in microcavities, Bose condensate of 3D magnons, atomic Bose condensates, Bose condensates of 2D magnetoexcitons and of spatially indirect dipolar excitons, while to fermion systems – condensate of cooled atoms 40 K …”

Section: Introductionmentioning

confidence: 99%

Spin Transport over Huge Distances in a Magnetized 2D Electron System

et al. 2019

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Experimental results on the properties of a recently discovered new collective state, the magnetofermionic condensate, are summarized herein. Condensation occurs in a fermionic system, a quantum Hall insulator (filling factor ν = 2), as a result of the formation of a dense ensemble of long-lived spin cyclotron magnetoexcitons, composite bosons. At temperatures below 1 K, the exciton ensemble exhibits a sharp enhancement in its response to an external electromagnetic field due to the formation of a super-absorbing state that interacts coherently with the electromagnetic field. Simultaneously, the electrons below the Fermi level rearrange to form a new non-equilibrium radiative recombination channel. The condensate shows a sharp decrease in viscosity and the ability to spread over macroscopically large distances, on the order of a millimeter, at a speed of ≈10 3 cm s −1 . Due to this rapid long-distance spin transfer, new opportunities in the field of spintronics have been opened up.

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Section: Introductionmentioning

confidence: 99%

Spin Transport over Huge Distances in a Magnetized 2D Electron System

et al. 2019

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“…The list of possible candidates able to demonstrate BEC was recently supplemented with a new type of quasiparticles [15]. In particular, it was shown [16] that in the case of a two-dimensional system of spin-less electrons under quantum Hall effect, so-called composite particles (CP) could emerge. These objects are point vortices fixed to a bare particle.…”

Section: Introductionmentioning

confidence: 99%

Four-Body Scattering of Light as a Method of Detection of Bose-Einstein Condensate of Excitons

Zavorotnev¹

2018

JPMT

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Process of four-particle light scattering in molecular crystals with participation of the exciton Bose-condensate is considered. The intensities and tensor of scattering are found for this effect. The frequency and polarization characteristics of this process are studies. It is shown that the investigation of the spectrum shapes of scattered radiation allows one to find and prove the existence of the Bose-Einstein condensate of excitons.

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Hydrogen atom in a magnetic field as an exactly solvable system without dynamical symmetries?

Liberman

2022

Physics Letters A

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Coherence of two-dimensional electron-hole systems: Spontaneous breaking of continuous symmetries: A review

Cited by 7 publications

References 127 publications

Spin Transport over Huge Distances in a Magnetized 2D Electron System

Spin Transport over Huge Distances in a Magnetized 2D Electron System

Four-Body Scattering of Light as a Method of Detection of Bose-Einstein Condensate of Excitons

Hydrogen atom in a magnetic field as an exactly solvable system without dynamical symmetries?

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