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TT: Fachverband Tiefe Temperaturen
TT 12: Poster Session Superconductivity
TT 12.22: Poster
Montag, 11. März 2013, 15:00–19:00, Poster D
Nematic quantum critical behaviors in high-temperature supreconductors — •Jing Wang1,2, Guo-Zhu Liu1, Jing-Rong Wang1,3, and Hagen Kleinert4 — 1University of Science and Technology of China, Hefei, China — 2Max Planck Institute, Stuttgart, Germany — 3Max Planck Institut, Dresden, Germany — 4Freie Universität Berlin, Berlin, Germany
In the past decade, there have been a number of experimental signatures pointing towards the presence of electronic nematic phase in some high-temperature superconductors [1]. On the basis of these experiments, a nematic quantum phase transition is expectd to exist in
the d-wave superconducting dome [2,3]. The critical nematic fluctuation interacts strongly with the gapless nodal quasiparticles, which leads to highly unusual properties. We examine the stability of the nematic quantum critical point against various quenched disorders by means of renormalization group approach [4,5]. We also study the influence of critical nematic fluctuation on some observable quantities, and predict that superconductivity is suppressed at the nematic quantum critical point [4,5].
[1] E. Fradkin et al., Annu. Rev. Condens. Matter Phys. 1, 153 (2010)
E.-A. Kim et al., Phys. Rev. B 77, 184514 (2008)
Y. Huh and S. Sachdev, Phys. Rev. B 78, 064512 (2008)
J. Wang, G.-Z. Liu, and H. Kleinert, Phys. Rev. B 83, 214503 (2011)
G.-Z. Liu, J.-R. Wang, and J. Wang, Phys. Rev. B 85, 174525 (2012)