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Optical manipulation of bipolarons in a system with nonlinear electron-phonon coupling
ID
Kovač, Klemen
(
Author
),
ID
Golež, Denis
(
Author
),
ID
Mierzejewski, Marcin
(
Author
),
ID
Bonča, Janez
(
Author
)
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MD5: F3D2D0A828BE6CC52206A6EB62E07760
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https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.132.106001
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Abstract
We investigate full quantum mechanical evolution of two electrons nonlinearly coupled to quantum phonons and simulate the dynamical response of the system subject to a short spatially uniform optical pulse that couples to dipole-active vibrational modes. Nonlinear electron-phonon coupling can either soften or stiffen the phonon frequency in the presence of electron density. In the former case, an external optical pulse tuned just below the phonon frequency generates attraction between electrons and leads to a long-lived bound state even after the optical pulse is switched off. It originates from a dynamical modification of the self-trapping potential that induces a metastable state. By increasing the pulse frequency, the attractive electron-electron interaction changes to repulsive. Two sequential optical pulses with different frequencies can switch between attractive and repulsive interaction. Finally, we show that the pulse-induced binding of electrons is shown to be efficient also for weakly dispersive optical phonons, in the presence anharmonic phonon spectrum and in two dimensions.
Language:
English
Keywords:
condensed matter physics
,
bipolarons
,
electron-phonon coupling
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FMF - Faculty of Mathematics and Physics
Publication version:
Author Accepted Manuscript
Publication date:
04.03.2024
Year:
2024
Number of pages:
Str. 106001-1-106001-6
Numbering:
Vol. 132, iss. 10
PID:
20.500.12556/RUL-154890
UDC:
538.9
ISSN on article:
0031-9007
DOI:
10.1103/PhysRevLett.132.106001
COBISS.SI-ID:
188007683
Publication date in RUL:
07.03.2024
Views:
121
Downloads:
44
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Record is a part of a journal
Title:
Physical review letters
Shortened title:
Phys. rev. lett.
Publisher:
American Physical Society
ISSN:
0031-9007
COBISS.SI-ID:
1282575
Licences
License:
CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:
http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:
The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Secondary language
Language:
Slovenian
Keywords:
fizika kondenzirane snovi
,
bipolaroni
,
elektron-fononska sklopitev
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
P1-0044
Name:
Teorija trdnih snovi in statistična fizika
Funder:
ARRS - Slovenian Research Agency
Project number:
J1-2455
Name:
Modeliranje neravnovesnih kvantnih materialov na različnih skalah
Funder:
Other - Other funder or multiple funders
Funding programme:
Poland, National Science Centre
Project number:
2020/37/B/ST3/00020
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