Electron correlations and orbital selectivities in multiorbital models for iron-based superconductors

Yu Rong

doi:10.7498/aps.64.217102

Abstract

We review the recent theoretical progress of the multiorbital effects on the electron correlations in iron-based superconductors. Studying the metal-to-insulator transitions of the multiorbital Hubbard models for parent compounds of iron-based superconductors, a Mott transition is generally realized. The natures of both the Mott insulating and the metallic phases are affected by the Hund's rule coupling. In alkaline iron selenides, Hund's rule coupling stabilizes a novel orbital-selective Mott phase, in which the iron 3d xy orbital is Mott localized, while other 3d orbitals are still itinerant. We discuss the effects of the orbital selectivity on normal state properties and the superconductivity of the iron-based systems.

Keywords:

Authors and contacts

Yu Rong

1.
Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Department of Physics, Renmin University of China, Beijing 100872, China

Corresponding author: Yu Rong, rong.yu@ruc.edu.cn

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 11374361) and the Fundamental Research Funds for the Central Universities, China (the Research Funds of Remnin University of China) (Grant No. 2014030193).

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Cited By

[1]	Kamihara Y, Watanabe T, Hirano M, Hosono H 2008 J. Am. Chem. Soc. 130 3296
[2]	Ren Z A, Lu W, Yang J, et al. 2008 Chin. Phys. Lett. 25 2215
[3]	Hsu F C, Luo J Y, Yeh K W, et al. 2008 Proc. Natl. Acad. Sci. USA 105 14262
[4]	Guo J, Jin S, Wang G, et al. 2010 Phys. Rev. B 82 180520
[5]	Fang M, Wang H D, Dong C H, et al. 2011 Euro Phys. Lett. 94 27009
[6]	Wang Q Y, Li Z, Zhang W H, et al. 2012 Chin. Phys. Lett. 29 037402
[7]	He S, He J, Zhang W, et al. 2013 Nat. Mater. 12 605
[8]	Lee J J, Schmitt F T, Moore R G, et al. 2014 Nature 515 245
[9]	Zhang Z, Wang Y, Song Q, et al. 2015 Sci. Bull. 60 1301
[10]	Ge J F, Liu Z L, Liu C, et al. 2015 Nat. Mater. 14 285
[11]	Bardeen J, Cooper L, Schrieffer J R 1957 Phys. Rev. 106 162
[12]	Cho A 2010 Science 327 1320
[13]	de la Cruz C, Huang Q, Lynn J W, et al. 2008 Nature 453 899
[14]	Yi M, Lu D H, Analytis J G, et al. 2009 Phys. Rev. B 80 024515
[15]	Hussey N E, Takenaka K, Takagi H 2004 Philoso. Mag. 84 2847
[16]	Qazilbash M, Hamlin J J, Baumbach R E, et al. 2009 Nat. Phys. 5 647
[17]	Liu M, Harriger L W, Luo H, et al. 2012 Nat. Phys. 8 376
[18]	Tamai A, Ganin A Y, Rozbicki E, et al. 2010 Phys. Rev. Lett. 104 097002
[19]	Yi M, Lu D H, Yu R, et al. 2013 Phys. Rev. Lett. 110 067003
[20]	Yi M, Liu Z K, Zhang Y et al. 2015 Nat. Commun. 6 7777
[21]	Bao W, Huang Q Z, Chen G F, et al. 2011 Chin. Phys. Lett. 28 086104
[22]	Castellani C, Natoli C R, Ranninger J 1978 Phys. Rev. B 18 4945
[23]	Kotliar G, Ruckenstein A E 1986 Phys. Rev. Lett. 57 1362
[24]	Florens S, Georges A 2004 Phys. Rev. B 70 035114
[25]	de'Medici, L Georges A, Biermann S 2005 Phys. Rev. B 72 205124
[26]	Hassan S R, de'Medici L 2010 Phys. Rev. B 81 035106
[27]	Yu R, Si Q 2012 Phys. Rev. B 86 085104
[28]	Yu R, Si Q 2013 Phys. Rev. Lett. 110 146402
[29]	Zhu J X, Yu R, Wang H, et al. 2010 Phys. Rev. Lett. 104 216405
[30]	Yu R, Zhu J X, Si Q 2011 Phys. Rev. Lett. 106 186401
[31]	Goswami P, Nikolic P, Si Q 2010 Europhys. Lett. 91 37006
[32]	Yu R, Goswami P, Si Q, Nikolic P, Zhu J X 2013 Nat. Commun. 4 2783
[33]	Yu R, Zhu J X, Si Q 2014 Phys. Rev. B 89 024509
[34]	Ge Q Q, Ye Z R, Xu M, et al. 2013 Phys. Rev. X 3 011020
[35]	Zhang C, Yu R, Su Y, et al. 2013 Phys. Rev. Lett. 111 207002
[36]	Nica E, Yu R, Si Q 2015 arXiv:1505.04170
[37]	Mou D, Liu S, Jia X, et al. 2011 Phys. Rev. Lett. 106 107001
[38]	Wang X P, Qian T, Richard P, et al. 2011 Europhys. Lett. 93 57001
[39]	Wang X P, Richard P, Shi X, et al. 2012 Europhys. Lett. 99 67001
[40]	Park J T, Friemel G, Li Y, et al. 2011 Phys. Rev. Lett. 107 177005
[41]	Friemel G, Park J T, Maier T A, et al. 2012 Phys. Rev. B 85 140511
[42]	Sato T, Nakayama K, Sekiba Y, et al. 2009 Phys. Rev. Lett. 103 047002
[43]	Reid J-Ph, Tanatar M A, Juneau-Fecteau A, et al. 2012 Phys. Rev. Lett. 109 087001
[44]	Okazaki K, Ota Y, Kotani Y, et al. 2012 Science 337 1314
[45]	Hong X C, Li X L, Pan B Y, et al. 2013 Phys. Rev. B 87 144502
[46]	Zhang Z, Wang A F, Hong X C, et al. 2015 Phys. Rev. B 91 024502
[47]	Hardy F, Böhmer A E, Aoki D, et al. 2013 Phys. Rev. Lett. 111 027002
[48]	Wang A F, Pan B Y, Luo X G, et al. 2013 Phys. Rev. B 87 214509
[49]	Wang P, Zhou P, Dai J, et al. 2015 arXiv:1503.08298
[50]	Eilers F, Grube K, Zocco D A, et al. 2015 arXiv:1510.01857

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Vol. 64, Issue 21 - 2015-11-05

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