Abstract
For the system of strongly correlated electrons on a triangular lattice, the possibility of coexisting superconductivity with the chiral order parameter and the 120°-type noncollinear spin ordering is demonstrated. The integral self-consistency equation for the superconducting order parameter is derived using the diagram technique for Hubbard operators taking into account the spin structure, exchange interaction within two coordination spheres, and intersite Coulomb repulsion.
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P. A. Igoshev, M. A. Timirgazin, A. K. Arzhnikov, and V. Yu. Irkhin, JETP Lett. 98, 150 (2013).
Y.-M. Lu and Z. Wang, Phys. Rev. Lett. 110, 096403 (2013).
M. Ogata, J. Phys. Soc. Jpn. 72, 1839 (2003).
G. Baskaran, Phys. Rev. Lett. 91, 097003 (2003).
G.-q. Zheng, K. Matano, R. L. Meng, J. Cmaidalka, and C. W. Chu, J. Phys.: Condens. Matter 18, L63 (2006).
Y. Kobayashi, M. Yokoi, and M. Sato, J. Phys. Soc. Jpn. 72, 2453 (2003).
M. M. Korshunov and I. Eremin, Phys. Rev. B 77, 064510 (2008).
S. Zhou and Z. Wang, Phys. Rev. Lett. 100, 217002 (2008).
V. V. Val’kov, T. A. Val’kova, and V. A. Mitskan, JETP Lett. 102, 361 (2015).
R. O. Zaitsev, Sov. Phys. JETP 41, 100 (1975).
R. O. Zaitsev, Sov. Phys. JETP 43, 574 (1976).
R. O. Zaitsev, Diagram Methods in the Theory of Superconductivity and Ferromagnetism (Editorial URSS, Moscow, 2004) [in Russian].
R. O. Zaitsev and V. A. Ivanov, Sov. Phys. Solid State 29, 1475 (1987).
R. O. Zaitsev, Sov. Phys. Solid State 30, 942 (1988).
G. C. Psaltakis and E. W. Fenton, J. Phys. C: Solid State Phys. 16, 3913 (1983).
Th. Jolicoeur, E. Dagotto, E. Gagliano, and S. Bacci, Phys. Rev. B 42, 4800 (1990).
D. Loison and H. T. Diep, Phys. Rev. B 50, 16453 (1994).
N. M. Plakida and V. S. Oudovenko, J. Exp. Theor. Phys. 119, 554 (2014).
V. V. Val’kov, D. M. Dzebisashvili, M. M. Korovushkin, and A. F. Barabanov, JETP Lett. 103, 385 (2016).
J. Kaczmarczyk and J. Spalek, Phys. Rev. B 84, 125140 (2011).
V. V. Val’kov and A. O. Zlotnikov, JETP Lett. 95, 350 (2012).
M. Yu. Kagan, V. V. Val’kov, V. A. Mitskan, and M. M. Korovushkin, J. Exp. Theor. Phys. 117, 728 (2013).
M. Yu. Kagan, V. V. Val’kov, V. A. Mitskan, and M. M. Korovushkin, J. Exp. Theor. Phys. 118, 995 (2014).
M. Yu. Kagan, V. A. Mitskan, and M. M. Korovushkin, Phys. Usp. 58, 733 (2015).
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Original Russian Text © V.V. Val’kov, A.O. Zlotnikov, 2016, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2016, Vol. 104, No. 7, pp. 512–517.
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Val’kov, V.V., Zlotnikov, A.O. Coexistence of the chiral superconductivity and noncollinear magnetic order in the ensemble of Hubbard fermions on a triangular lattice. Jetp Lett. 104, 483–488 (2016). https://doi.org/10.1134/S0021364016190127
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DOI: https://doi.org/10.1134/S0021364016190127