Bogolon-mediated electron capture by impurities in hybrid Bose-Fermi systems

M. V. Boev; V. M. Kovalev; I. G. Savenko

doi:10.1103/PhysRevB.97.165305

Bogolon-mediated electron capture by impurities in hybrid Bose-Fermi systems

M. V. Boev^*, V. M. Kovalev, I. G. Savenko

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

We investigate the processes of electron capture by a Coulomb impurity center residing in a hybrid system consisting of spatially separated two-dimensional layers of electron and Bose-condensed dipolar exciton gases coupled via the Coulomb forces. We calculate the probability of the electron capture accompanied by the emission of a single Bogoliubov excitation (bogolon), similar to regular phonon-mediated scattering in solids. Furthermore, we study the electron capture mediated by the emission of a pair of bogolons in a single capture event and show that these processes not only should be treated in the same order of the perturbation theory, but also they give a more important contribution than single-bogolon-mediated capture, in contrast with regular phonon scattering.

Original language	English
Article number	165305
Journal	Physical Review B
Volume	97
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.97.165305
State	Published - 13 Apr 2018
Externally published	Yes

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title = "Bogolon-mediated electron capture by impurities in hybrid Bose-Fermi systems",

abstract = "We investigate the processes of electron capture by a Coulomb impurity center residing in a hybrid system consisting of spatially separated two-dimensional layers of electron and Bose-condensed dipolar exciton gases coupled via the Coulomb forces. We calculate the probability of the electron capture accompanied by the emission of a single Bogoliubov excitation (bogolon), similar to regular phonon-mediated scattering in solids. Furthermore, we study the electron capture mediated by the emission of a pair of bogolons in a single capture event and show that these processes not only should be treated in the same order of the perturbation theory, but also they give a more important contribution than single-bogolon-mediated capture, in contrast with regular phonon scattering.",

author = "Boev, {M. V.} and Kovalev, {V. M.} and Savenko, {I. G.}",

note = "Publisher Copyright: {\textcopyright} 2018 American Physical Society.",

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doi = "10.1103/PhysRevB.97.165305",

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AU - Boev, M. V.

AU - Kovalev, V. M.

AU - Savenko, I. G.

PY - 2018/4/13

Y1 - 2018/4/13

N2 - We investigate the processes of electron capture by a Coulomb impurity center residing in a hybrid system consisting of spatially separated two-dimensional layers of electron and Bose-condensed dipolar exciton gases coupled via the Coulomb forces. We calculate the probability of the electron capture accompanied by the emission of a single Bogoliubov excitation (bogolon), similar to regular phonon-mediated scattering in solids. Furthermore, we study the electron capture mediated by the emission of a pair of bogolons in a single capture event and show that these processes not only should be treated in the same order of the perturbation theory, but also they give a more important contribution than single-bogolon-mediated capture, in contrast with regular phonon scattering.

AB - We investigate the processes of electron capture by a Coulomb impurity center residing in a hybrid system consisting of spatially separated two-dimensional layers of electron and Bose-condensed dipolar exciton gases coupled via the Coulomb forces. We calculate the probability of the electron capture accompanied by the emission of a single Bogoliubov excitation (bogolon), similar to regular phonon-mediated scattering in solids. Furthermore, we study the electron capture mediated by the emission of a pair of bogolons in a single capture event and show that these processes not only should be treated in the same order of the perturbation theory, but also they give a more important contribution than single-bogolon-mediated capture, in contrast with regular phonon scattering.

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DO - 10.1103/PhysRevB.97.165305

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VL - 97

JO - Physical Review B

JF - Physical Review B

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ER -

Bogolon-mediated electron capture by impurities in hybrid Bose-Fermi systems

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