Theory of criticality for quantum ferroelectric metals
Abstract
A variety of compounds, for example, doped paraelectrics and polar metals, exhibit both ferroelectricity and correlated electronic phenomena such as low-density superconductivity and anomalous transport. Characterizing such properties is tied to understanding the quantum dynamics of inversion symmetry breaking in the presence of itinerant electrons. Here, we present a comprehensive analysis of the properties of a metal near a quantum critical transition to a ferroelectric state, in both two and three dimensions. In this study, starting from a minimal model of electrons coupled to a transverse polar phonon via a Rashba-type spin-orbit interaction, we compute the dynamical response of both electrons and phonons. We find that the system can evince both Fermi and non-Fermi liquid phases, as well as enhanced pairing in both singlet and triplet channels. Furthermore, we systematically compute corrections to one-loop theory and find a tendency to quantum order-by-disorder, leading to a phase diagram that can include second-order, first-order, and finite-momentum phase transitions. Finally, we show that the entire phase diagram can be controlled via application of external strain, either compressive or volume-preserving. Our results provide a map of the dynamical and thermodynamical phase space of quantum ferroelectic metals, which can serve in characterizing existing materials andmore »
- Authors:
-
[1];
[2];
[3];
[4]
- Weizmann Institute of Science, Rehovot (Israel)
- Carnegie Mellon Univ., Pittsburgh, PA (United States); Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Bar-Ilan Univ., Ramat Gan (Israel)
- Univ. of Minnesota, Minneapolis, MN (United States)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); National Science Foundation (NSF)
- OSTI Identifier:
- 2234150
- Grant/Contract Number:
- AC02-05CH11231; SC0016371; PHY-1607611
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B
- Additional Journal Information:
- Journal Volume: 107; Journal Issue: 16; 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; ferroelectricity; quantum criticality; superconductivity; strongly correlated systems; Fermi liquid theory
Citation Formats
Klein, Avraham, Kozii, Vladyslav, Ruhman, Jonathan, and Fernandes, Rafael M. Theory of criticality for quantum ferroelectric metals. United States: N. p., 2023.
Web. doi:10.1103/physrevb.107.165110.
Klein, Avraham, Kozii, Vladyslav, Ruhman, Jonathan, & Fernandes, Rafael M. Theory of criticality for quantum ferroelectric metals. United States. https://doi.org/10.1103/physrevb.107.165110
Klein, Avraham, Kozii, Vladyslav, Ruhman, Jonathan, and Fernandes, Rafael M. Thu .
"Theory of criticality for quantum ferroelectric metals". United States. https://doi.org/10.1103/physrevb.107.165110. https://www.osti.gov/servlets/purl/2234150.
@article{osti_2234150,
title = {Theory of criticality for quantum ferroelectric metals},
author = {Klein, Avraham and Kozii, Vladyslav and Ruhman, Jonathan and Fernandes, Rafael M.},
abstractNote = {A variety of compounds, for example, doped paraelectrics and polar metals, exhibit both ferroelectricity and correlated electronic phenomena such as low-density superconductivity and anomalous transport. Characterizing such properties is tied to understanding the quantum dynamics of inversion symmetry breaking in the presence of itinerant electrons. Here, we present a comprehensive analysis of the properties of a metal near a quantum critical transition to a ferroelectric state, in both two and three dimensions. In this study, starting from a minimal model of electrons coupled to a transverse polar phonon via a Rashba-type spin-orbit interaction, we compute the dynamical response of both electrons and phonons. We find that the system can evince both Fermi and non-Fermi liquid phases, as well as enhanced pairing in both singlet and triplet channels. Furthermore, we systematically compute corrections to one-loop theory and find a tendency to quantum order-by-disorder, leading to a phase diagram that can include second-order, first-order, and finite-momentum phase transitions. Finally, we show that the entire phase diagram can be controlled via application of external strain, either compressive or volume-preserving. Our results provide a map of the dynamical and thermodynamical phase space of quantum ferroelectic metals, which can serve in characterizing existing materials and in seeking applications for quantum technologies.},
doi = {10.1103/physrevb.107.165110},
journal = {Physical Review. B},
number = 16,
volume = 107,
place = {United States},
year = {Thu Apr 06 00:00:00 EDT 2023},
month = {Thu Apr 06 00:00:00 EDT 2023}
}
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