TY - JOUR
T1 - Positive seebeck coefficient in highly doped La2-xSrxCuO4(x = 0.33); Its origin and implication
AU - Jin, Hao
AU - Narduzzo, Alessandro
AU - Nohara, Minoru
AU - Takagi, Hidenori
AU - Hussey, N. E.
AU - Behnia, Kamran
N1 - Funding Information:
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).
Funding Information:
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).
Publisher Copyright:
© 2021 The Physical Society of Japan.
PY - 2021/5/15
Y1 - 2021/5/15
N2 - 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.
AB - 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.
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U2 - 10.7566/JPSJ.90.053702
DO - 10.7566/JPSJ.90.053702
M3 - Article
AN - SCOPUS:85105133137
VL - 90
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 5
M1 - 053702
ER -