/ S. . Maiti [et al.]> // Phys. Rev. B. - 2011. -
Vol. 84,
Is. 22. - Ст. 224505,
DOI 10.1103/PhysRevB.84.224505. - Cited References: 46. - We acknowledge helpful discussions with L. Benfatto, R. Fernandes, W. Hanke, I. Eremin, H. Kontani, K. Kuroki, Y. Matsuda, I. Mazin, R. Prozorov, D. Scalapino, J. Schmalian, Z. Tesanovic, R. Thomale, M. Vavilov, and A. Vorontsov. This work was supported by NSF-DMR-0906953 (S. M. and A. V. C.). Partial support from MPI PKS (Dresden) (S. M. and A. V. C.) and the Humboldt Foundation (A. V. C.) is gratefully acknowledged. T. A. M. acknowledges support from the Center of Nanophase Materials Sciences, which is sponsored at Oak Ridge National Laboratory by the Office of Basic Energy Sciences, US Department of Energy. M. M. K. and P. J. H. acknowledge support from DOE DE-FG02-05ER46236. M. M. K. is grateful for support from RFBR (Grant No. 09-02-00127), Presidium of RAS program N5.7, FCP Scientific and Research-and-Educational Personnel of Innovative Russia for 2009-2013 (GK P891 and GK 16.740.12.0731), and the President of Russia (Grant No. MK-1683.2010.2).
. - ISSN 1098-0121
РУБ Physics, Condensed Matter
Аннотация: We present a detailed study of the symmetry and structure of the pairing gap in Fe-based superconductors (FeSCs). We treat FeSCs as quasi-2D, decompose the pairing interaction in the XY plane in s-wave and d-wave channels into contributions from scattering between different Fermi surfaces, and analyze how each scattering evolves with
doping and input parameters. We verify that each interaction is well approximated by the lowest angular harmonics. We use this simplification to analyze the interplay between the interaction with and without spin-fluctuation components, the origin of the attraction in the s(+/-) and d(x2-y2) channels, the competition between them, the angular dependence of the s(+/-) gaps along the electron Fermi surface, the conditions under which the s(+/-) gap develops nodes, and the origin of superconductivity in heavily electron-or hole-doped systems, when only Fermi surfaces of one type are present. We also discuss the relation between RPA and RG approaches for FeSCs.
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Держатели документа: [Maiti, S.
Chubukov, A. V.] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA
[Korshunov, M. M.
Hirschfeld, P. J.] Univ Florida, Dept Phys, Gainesville, FL 32611 USA
[Korshunov, M. M.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Korshunov, M. M.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Maier, T. A.] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA
[Maier, T. A.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA
ИФ СО РАН
Department of Physics, University of Wisconsin, Madison, WI 53706, United States
Department of Physics, University of Florida, Gainesville, FL 32611, United States
L. V. Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036 Krasnoyarsk, Russian Federation
Siberian Federal University, Svobodny Prospect 79, 660041 Krasnoyarsk, Russian Federation
Computer Science and Mathematics Division, Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States
Доп.точки доступа: Maiti, S.; Korshunov, M. M.; Коршунов, Максим Михайлович; Maier, T. A.; Hirschfeld, P. J.; Chubukov, A. V.