Electronic and phononic properties of a two-dimensional electron gas coupled to dipolar phonons via small-momentum-transfer scattering
Abstract
We study the electron and phonon spectral functions as well as superconductivity for a two-dimensional electron gas coupled to dipolar phonons via small-momentum-transfer scattering. The results reported here are obtained through sign-problem-free quantum Monte Carlo simulation. Hence, aside from modeling there are no further approximations. Our results can be relevant to the high-temperature superconductor at the interface between a unit-cell-thick FeSe and SrTiO3. Our results give support to the interpretation that the observed replica band in unit-cell-thick FeSe on SrTiO3 is due to the small-momentum transfer interaction between the FeSe electrons and a branch of polar STO phonons. Furthermore, we conclude that while the small-momentum electron-phonon interaction can not induce strong Cooper pairing by itself, it can enhance the Cooper pairing triggered by other pairing interactions.
- Authors:
-
[1];
[1]
- Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States)
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
- OSTI Identifier:
- 1594966
- Grant/Contract Number:
- AC02-76SF00515; AC02-05CH11231; GBMF4545
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 100; Journal Issue: 24; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Li, Zi-Xiang, Devereaux, T. P., and Lee, Dung-Hai. Electronic and phononic properties of a two-dimensional electron gas coupled to dipolar phonons via small-momentum-transfer scattering. United States: N. p., 2019.
Web. doi:10.1103/PhysRevB.100.241101.
Li, Zi-Xiang, Devereaux, T. P., & Lee, Dung-Hai. Electronic and phononic properties of a two-dimensional electron gas coupled to dipolar phonons via small-momentum-transfer scattering. United States. https://doi.org/10.1103/PhysRevB.100.241101
Li, Zi-Xiang, Devereaux, T. P., and Lee, Dung-Hai. Tue .
"Electronic and phononic properties of a two-dimensional electron gas coupled to dipolar phonons via small-momentum-transfer scattering". United States. https://doi.org/10.1103/PhysRevB.100.241101. https://www.osti.gov/servlets/purl/1594966.
@article{osti_1594966,
title = {Electronic and phononic properties of a two-dimensional electron gas coupled to dipolar phonons via small-momentum-transfer scattering},
author = {Li, Zi-Xiang and Devereaux, T. P. and Lee, Dung-Hai},
abstractNote = {We study the electron and phonon spectral functions as well as superconductivity for a two-dimensional electron gas coupled to dipolar phonons via small-momentum-transfer scattering. The results reported here are obtained through sign-problem-free quantum Monte Carlo simulation. Hence, aside from modeling there are no further approximations. Our results can be relevant to the high-temperature superconductor at the interface between a unit-cell-thick FeSe and SrTiO3. Our results give support to the interpretation that the observed replica band in unit-cell-thick FeSe on SrTiO3 is due to the small-momentum transfer interaction between the FeSe electrons and a branch of polar STO phonons. Furthermore, we conclude that while the small-momentum electron-phonon interaction can not induce strong Cooper pairing by itself, it can enhance the Cooper pairing triggered by other pairing interactions.},
doi = {10.1103/PhysRevB.100.241101},
journal = {Physical Review B},
number = 24,
volume = 100,
place = {United States},
year = {Tue Dec 03 00:00:00 EST 2019},
month = {Tue Dec 03 00:00:00 EST 2019}
}
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