Optical spectroscopy studies on FeTe1-xSex and AxFe2-ySe2 (A=K, Rb, Cs)：A brief overview

doi:10.1088/1674-1056/22/8/087404

Abstract In this short overview, we summarize the optical spectroscopy studies on iron selenide superconducting systems FeTe_1-xSe_x and A_xFe_2-ySe₂. We elaborate that optical spectroscopy measurements yield fruitful information about the band structure evolution across the AFM phase transition temperature, the electronic correlation effect, the superconducting pairing energy gap, the condensed carrier density or penetration depth, the inhomogeneity and the nanoscale phase separation between superconductivity and antiferromagnetism in those systems.

Received: 14 June 2013
Accepted manuscript online:

PACS:	74.25.Gz	(Optical properties)
	74.70.-b	(Superconducting materials other than cuprates)
	74.62.Bf	(Effects of material synthesis, crystal structure, and chemical composition)

Corresponding Authors: Wang Nan-Lin
E-mail: nlwang@iphy.ac.cn

Cite this article:

Yuan Rui-Hua (原瑞花), Wang Nan-Lin (王楠林) Optical spectroscopy studies on FeTe_1-xSe_x and A_xFe_2-ySe₂ (A=K, Rb, Cs)：A brief overview 2013 Chin. Phys. B 22 087404

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Optical spectroscopy studies on FeTe1-xSex and AxFe2-ySe2 (A=K, Rb, Cs)：A brief overview

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Optical spectroscopy studies on FeTe_1-xSe_x and A_xFe_2-ySe₂ (A=K, Rb, Cs)：A brief overview