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Grissonnanche G, Cyr-Choinière O, Laliberté F, et al. Direct measurement of the upper critical field in cuprate superconductors. Nat Commun. 2014;5:3280doi: 10.1038/ncomms4280.
Grissonnanche, G., Cyr-Choinière, O., Laliberté, F., René de Cotret, S., Juneau-Fecteau, A., Dufour-Beauséjour, S., Delage, M. �. �., LeBoeuf, D., Chang, J., Ramshaw, B. J., Bonn, D. A., Hardy, W. N., Liang, R., Adachi, S., Hussey, N. E., Vignolle, B., Proust, C., Sutherland, M., Krämer, S., Park, J. H., Graf, D., Doiron-Leyraud, N., & Taillefer, L. (2014). Direct measurement of the upper critical field in cuprate superconductors. Nature communications, 53280. https://doi.org/10.1038/ncomms4280
Grissonnanche, G, et al. "Direct measurement of the upper critical field in cuprate superconductors." Nature communications vol. 5 (2014): 3280. doi: https://doi.org/10.1038/ncomms4280
Grissonnanche G, Cyr-Choinière O, Laliberté F, René de Cotret S, Juneau-Fecteau A, Dufour-Beauséjour S, Delage MÈ, LeBoeuf D, Chang J, Ramshaw BJ, Bonn DA, Hardy WN, Liang R, Adachi S, Hussey NE, Vignolle B, Proust C, Sutherland M, Krämer S, Park JH, Graf D, Doiron-Leyraud N, Taillefer L. Direct measurement of the upper critical field in cuprate superconductors. Nat Commun. 2014;5:3280. doi: 10.1038/ncomms4280. PMID: 24518054; PMCID: PMC3929805.
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Nat Commun. 2014;5:3280. doi: 10.1038/ncomms4280.

Direct measurement of the upper critical field in cuprate superconductors.

Nature communications

G Grissonnanche, O Cyr-Choinière, F Laliberté, S René de Cotret, A Juneau-Fecteau, S Dufour-Beauséjour, M-È Delage, D LeBoeuf, J Chang, B J Ramshaw, D A Bonn, W N Hardy, R Liang, S Adachi, N E Hussey, B Vignolle, C Proust, M Sutherland, S Krämer, J-H Park, D Graf, N Doiron-Leyraud, Louis Taillefer

Affiliations

  1. Département de physique & RQMP, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1.
  2. 1] Département de physique & RQMP, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1 [2].
  3. Department of Physics & Astronomy, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1.
  4. 1] Department of Physics & Astronomy, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1 [2] Canadian Institute for Advanced Research, Toronto, Ontario, Canada M5G 1Z8.
  5. Superconductivity Research Laboratory, ISTEC, Yokohama, Kanagawa 223-0051, Japan.
  6. 1] H. H. Wills Physics Laboratory, University of Bristol, Bristol BS8 1TL, UK [2].
  7. Laboratoire National des Champs Magnétiques Intenses, Toulouse 31400, France.
  8. 1] Canadian Institute for Advanced Research, Toronto, Ontario, Canada M5G 1Z8 [2] Laboratoire National des Champs Magnétiques Intenses, Toulouse 31400, France.
  9. Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK.
  10. Laboratoire National des Champs Magnétiques Intenses, Grenoble, France.
  11. National High Magnetic Field Laboratory, Tallahassee, Florida 32310, USA.
  12. 1] Département de physique & RQMP, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1 [2] Canadian Institute for Advanced Research, Toronto, Ontario, Canada M5G 1Z8.

PMID: 24518054 PMCID: PMC3929805 DOI: 10.1038/ncomms4280

Abstract

In the quest to increase the critical temperature Tc of cuprate superconductors, it is essential to identify the factors that limit the strength of superconductivity. The upper critical field Hc2 is a fundamental measure of that strength, yet there is no agreement on its magnitude and doping dependence in cuprate superconductors. Here we show that the thermal conductivity can be used to directly detect Hc2 in the cuprates YBa2Cu3Oy, YBa2Cu4O8 and Tl2Ba2CuO6+δ, allowing us to map out Hc2 across the doping phase diagram. It exhibits two peaks, each located at a critical point where the Fermi surface of YBa2Cu3Oy is known to undergo a transformation. Below the higher critical point, the condensation energy, obtained directly from Hc2, suffers a sudden 20-fold collapse. This reveals that phase competition-associated with Fermi-surface reconstruction and charge-density-wave order-is a key limiting factor in the superconductivity of cuprates.

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