Abstract
We present a study of the thermoelectric (Seebeck and Nernst) response in heavily overdoped, non-superconducting La1.67Sr0.33CuO4. In spite of the electron-like curvature of the Fermi surface, the Seebeck coefficient is positive at low temperatures. Such a feature, previously observed in copper, silver, gold and lithium, is caused by a non-trivial energy dependence of the scattering time. We argue that this feature implies a strong asymmetry between the lifetime of occupied and unoccupied states along the zone diagonals and such an electron-hole asymmetry impedes formation of Cooper pairs along the nodal direction in the superconducting ground state emerging at lower doping levels.
Original language | English |
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Article number | 053702 |
Pages (from-to) | 053702 |
Journal | Journal of the Physical Society of Japan |
Volume | 90 |
Issue number | 5 |
Early online date | 9 Apr 2021 |
DOIs | |
Publication status | Published - 15 May 2021 |
Funding
Acknowledgments KB is supported by the Agence Nationale de la Recherche (ANR-18-CE92-0020-01; ANR-19-CE30-0014-04). NEH is supported by the Netherlands Organisation for Scientific Research (NWO) (Grant No. 16METL01) —“Strange Metals” and by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement No. 835279-Catch-22). KB is supported by the Agence Nationale de la Recherche (ANR-18-CE92-0020-01; ANR-19-CE30-0014-04). NEH is supported by the Netherlands Organisation for Scientific Research (NWO) (Grant No. 16METL01)-"Strange Metals" and by the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (Grant Agreement No. 835279-Catch-22).
Funders | Funder number |
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Horizon 2020 Framework Programme | 835279 |
European Research Council | |
French National Research Agency | ANR-18-CE92-0020-01, ANR-19-CE30-0014-04 |
Nederlandse Organisatie voor Wetenschappelijk Onderzoek | 16METL01 |
Horizon 2020 |