Comment on “Temperature range of superconducting fluctuations above Tc in YBa2Cu3O7δ single crystals”

D. Sóñora, J. Mosqueira, and F. Vidal
Phys. Rev. B 102, 176501 – Published 25 November 2020

Abstract

Contrary to the starting assumption of Grbić et al. [Phys. Rev. B 83, 144508 (2011)], here we will argue that a 16-T magnetic field is not enough to quench all superconducting fluctuations above Tc in YBa2Cu3O7δ. We conclude that through their measurements of microwave absorption these authors actually determine the AC fluctuation magnetoconductivity at 16 T, instead of the zero-field AC paraconductivity as they contend. So the temperature proposed by Grbić et al. for the onset of the superconducting fluctuations, T, will correspond to the one at which the finite-field effects at 16 T become measurable in their experiments and the actual fluctuation onset will be located well above T. These conclusions, which also concern influential recent publications on that issue, are confirmed by analyzing some of the Grbić et al. data on the grounds of the Gaussian Ginzburg-Landau approach for the finite-field (or Prange) fluctuation regime.

  • Figure
  • Figure
  • Received 19 October 2019
  • Revised 26 March 2020
  • Accepted 22 October 2020

DOI:https://doi.org/10.1103/PhysRevB.102.176501

©2020 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

D. Sóñora, J. Mosqueira, and F. Vidal

  • QMatterPhotonics Research Group, Departamento de Física de Partículas, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain

Comments & Replies

Reply to “Comment on ‘Temperature range of superconducting fluctuations above Tc in YBa2Cu3O7δ single crystals' ”

M. S. Grbić, M. Požek, D. Paar, V. Hinkov, M. Raichle, D. Haug, B. Keimer, N. Barišić, and A. Dulčić
Phys. Rev. B 102, 176502 (2020)

Article Text (Subscription Required)

Click to Expand

Original Article

Temperature range of superconducting fluctuations above Tc in YBa2Cu3O7δ single crystals

M. S. Grbić, M. Požek, D. Paar, V. Hinkov, M. Raichle, D. Haug, B. Keimer, N. Barišić, and A. Dulčić
Phys. Rev. B 83, 144508 (2011)

References (Subscription Required)

Click to Expand
Issue

Vol. 102, Iss. 17 — 1 November 2020

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×