Anisotropic resistivity and superconducting instability in ferroelectric metals

dc.contributorAalto Universityen
dc.contributor.authorZyuzin, Vladimir A.
dc.contributor.authorZyuzin, Alexander A.
dc.contributor.departmentLandau Institute for Theoretical Physics
dc.contributor.departmentCentre of Excellence in Quantum Technology, QTF
dc.contributor.departmentDepartment of Applied Physicsen
dc.descriptionFunding Information: Acknowledgments. We thank the Pirinem School of Theoretical Physics where all work was initiated for the warm hospitality. We thank A. T. Burkov and A. Y. Zyuzin for helpful discussions. V.A.Z. thanks A. Kumar and D. L. Maslov for hospitality during his stay at the UF. V.A.Z. is supported by the Russian Foundation for Basic Research (Grant No. 20-52-12 013), Deutsche Forschungsgemeinschaft (Grant No. EV 30/14-1) cooperation, and by the Foundation for the Advancement of Theoretical Physics and Mathematics BASIS. A.A.Z. was supported by the Academy of Finland (Project No. 308339) and, in part, by the Academy of Finland Centre of Excellence program (Project No. 336810). Publisher Copyright: © 2022 American Physical Society.
dc.description.abstractWe propose a theoretical model of a ferroelectric metal where spontaneous electric polarization coexists with the conducting electrons. In our model we adopt a scenario when conducting electrons interact with two soft transverse optical phonons, generalize it to the case when there is a spontaneous ferroelectric polarization in the system, and show that a linear coupling to the phonons emerges as a result. We find that this coupling results in anisotropic electric transport which has a transverse to the current voltage drop. Importantly, the obtained transverse component of the resistivity has distinct linear dependence with temperature. Moreover, we show that the coupling enhances superconducting transition temperature of the ferroelectric metal. We argue that our results help to explain recent experiments on ferroelectric strontium titanate as well as provide new experimental signatures to look for.en
dc.description.versionPeer revieweden
dc.identifier.citationZyuzin , V A & Zyuzin , A A 2022 , ' Anisotropic resistivity and superconducting instability in ferroelectric metals ' , Physical Review B , vol. 106 , no. 12 , L121114 , pp. 1-6 .
dc.identifier.otherPURE UUID: be922ca4-c7a8-41d3-9e80-330851751d9b
dc.identifier.otherPURE ITEMURL:
dc.identifier.otherPURE LINK:
dc.identifier.otherPURE FILEURL:
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review Ben
dc.relation.ispartofseriesVolume 106, issue 12en
dc.titleAnisotropic resistivity and superconducting instability in ferroelectric metalsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi