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Вид документа : Статья из журнала Шифр издания :
Автор(ы) : Hirschfeld P. J., Korshunov M. M., Mazin I. I.
Заглавие : Gap symmetry and structure of Fe-based superconductors
Место публикации : Rep. Prog. Phys.: IOP PUBLISHING LTD, 2011. - Vol. 74, Is. 12. - Ст.124508. - ISSN 0034-4885, DOI 10.1088/0034-4885/74/12/124508 Примечания : Cited References: 312. - Wewould like to thankRArita, A V Chubukov, T P Devereaux, O Dolgov, I Eremin, R M Fernandes, S Graser, H Ikeda, A F Kemper, H Kontani, K Kuroki, T A Maier, Y Matsuda, V Mishra, K A Moler, R Prozorov, DJ Scalapino, T Shibauchi, G R Stewart, I Vekhter, W Wang, Y Wang and H-H Wen for useful discussions. Partial support was provided by DOE DE-FG02-05ER46236 (PJH and MMFK) and NSF-DMR-1005625 (PJH). MMK acknowledges support from RFBR (grant 09-02-00127), Presidium of RAS program 'Quantum physics of condensed matter' N5.7, FCP Scientific and Research-and-Educational Personnel of Innovative Russia for 2009-2013 (GK P891 and GK 16.740.12.0731), and President of Russia (grant MK-1683.2010.2). PJH and MMK are grateful for the support of the Kavli Institute for Theoretical Physics and the Stanford Institute for Materials and Energy Science during the writing of this work.
Предметные рубрики: D-WAVE SUPERCONDUCTORS DENSITY-OF-STATES HIGH-TEMPERATURE SUPERCONDUCTIVITY RESOLVED PHOTOEMISSION-SPECTROSCOPY IRON-BASED SUPERCONDUCTORS UNCONVENTIONAL SUPERCONDUCTORS ANISOTROPIC SUPERCONDUCTORS RENORMALIZATION-GROUP PAIRING SYMMETRY CUPRATE SUPERCONDUCTORS Аннотация: The recently discovered Fe-pnictide and chalcogenide superconductors display low-temperature properties suggesting superconducting gap structures which appear to vary substantially from family to family, and even within families as a function of doping or pressure. We propose that this apparent nonuniversality can actually be understood by considering the predictions of spin fluctuation theory and accounting for the peculiar electronic structure of these systems, coupled with the likely 'sign-changing s-wave' (s(+/-)) symmetry. We review theoretical aspects, materials properties and experimental evidence relevant to this suggestion, and discuss which further measurements would be useful to settle these issues.
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