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Title: Weak phase stiffness and nature of the quantum critical point in underdoped cuprates

Abstract

We demonstrate that the zero-temperature superconducting phase diagram of underdoped cuprates can be quantitatively understood in the strong binding limit, using only the experimental spectral function of the “normal” pseudogap phase without any free parameter. In the prototypical (La1–xSrx)2CuO4, a kinetics-driven d-wave superconductivity is obtained above the critical doping δc ~ 5.2%, below which complete loss of superfluidity results from local quantum fluctuation involving local p-wave pairs. Near the critical doping, an enormous mass enhancement of the local pairs is found responsible for the observed rapid decrease of phase stiffness. Lastly, a striking mass divergence is predicted at δc that dictates the occurrence of the observed quantum critical point and the abrupt suppression of the Nernst effects in the nearby region.

Authors:
 [1];  [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States); State Univ. of New York, Stony Brook, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1235875
Alternate Identifier(s):
OSTI ID: 1224868
Report Number(s):
BNL-111683-2015-JA
Journal ID: ISSN 1098-0121; PRBMDO; R&D Project: PM002; Kc0202030
Grant/Contract Number:  
SC00112704; AC02-98CH10886
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 18; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Yildirim, Yucel, and Ku, Wei. Weak phase stiffness and nature of the quantum critical point in underdoped cuprates. United States: N. p., 2015. Web. doi:10.1103/PhysRevB.92.180501.
Yildirim, Yucel, & Ku, Wei. Weak phase stiffness and nature of the quantum critical point in underdoped cuprates. United States. https://doi.org/10.1103/PhysRevB.92.180501
Yildirim, Yucel, and Ku, Wei. 2015. "Weak phase stiffness and nature of the quantum critical point in underdoped cuprates". United States. https://doi.org/10.1103/PhysRevB.92.180501. https://www.osti.gov/servlets/purl/1235875.
@article{osti_1235875,
title = {Weak phase stiffness and nature of the quantum critical point in underdoped cuprates},
author = {Yildirim, Yucel and Ku, Wei},
abstractNote = {We demonstrate that the zero-temperature superconducting phase diagram of underdoped cuprates can be quantitatively understood in the strong binding limit, using only the experimental spectral function of the “normal” pseudogap phase without any free parameter. In the prototypical (La1–xSrx)2CuO4, a kinetics-driven d-wave superconductivity is obtained above the critical doping δc ~ 5.2%, below which complete loss of superfluidity results from local quantum fluctuation involving local p-wave pairs. Near the critical doping, an enormous mass enhancement of the local pairs is found responsible for the observed rapid decrease of phase stiffness. Lastly, a striking mass divergence is predicted at δc that dictates the occurrence of the observed quantum critical point and the abrupt suppression of the Nernst effects in the nearby region.},
doi = {10.1103/PhysRevB.92.180501},
url = {https://www.osti.gov/biblio/1235875}, journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 18,
volume = 92,
place = {United States},
year = {Mon Nov 02 00:00:00 EST 2015},
month = {Mon Nov 02 00:00:00 EST 2015}
}

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Cited by: 7 works
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Works referenced in this record:

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Works referencing / citing this record:

Can high- T c superconductivity in cuprates be explained by the conventional BCS theory?
journal, June 2018