Probing the order parameter symmetry in the cuprate high temperature superconductors by SQUID microscopy

John R. Kirtley

doi:10.1016/j.crhy.2011.03.003

Probing the order parameter symmetry in the cuprate high temperature superconductors by SQUID microscopy
[Sonder par la microscopie à SQUID la symétrie du paramètre dʼordre des cuprates supraconducteurs à haute température critique]

John R. Kirtley ¹

¹ Center for Probing the Nanoscale, Stanford University, Stanford, CA 93404, USA

Comptes Rendus. Physique, Superconductivity of strongly correlated systems, Volume 12 (2011) no. 5-6, pp. 436-445.

Résumé
Abstract

La nature de la composante orbitale du paramètre dʼordre dans les cuprates à haute $T_{c}$ est maintenant bien établie, en grande partie grâce à des expériences sensibles à la phase de la fonction dʼonde du condensat supraconducteur. Dans cet article de revue, on décrit les développements de la microscopie à SQUID qui ont permis de réaliser ces tests dans les cuprates, en identifiant les facteurs qui ont favorisé ces expériences : elles ne seront peut-être pas facilement généralisables à court terme à dʼautres supraconducteurs non conventionnels, qui ne possèdent pas les propriétés physiques et cristallographiques des cuprates qui y étaient favorables.

The orbital component of the order parameter in the cuprate high- $T_{c}$ cuprate superconductors is now well established, in large part because of phase sensitive tests. Although it would be desirable to use such tests on other unconventional superconductors, there are a number of favorable factors associated with the properties of the cuprates, and a number of technical advances, that were required for these tests to be successful. In this review I will describe the development of phase sensitive pairing symmetry tests using SQUID microscopy, underlining the factors favoring these experiments in the cuprates and the technical advances that had to be made.

Publié le : 2011-05-19

DOI : 10.1016/j.crhy.2011.03.003

Keywords: SQUID microscopy, Pairing symmetry, High-

T_{c}

, Unconventional superconductors
Mots-clés : Microscopie SQUID, Appariement symétrie, Haute

T_{c}

, Supraconducteurs non conventionnels

Affiliations des auteurs :

John R. Kirtley ¹

¹ Center for Probing the Nanoscale, Stanford University, Stanford, CA 93404, USA

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John R. Kirtley. Probing the order parameter symmetry in the cuprate high temperature superconductors by SQUID microscopy. Comptes Rendus. Physique, Superconductivity of strongly correlated systems, Volume 12 (2011) no. 5-6, pp. 436-445. doi : 10.1016/j.crhy.2011.03.003. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2011.03.003/

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