The Optical Study of Single Crystalline Cs0.8(Fe1.05Se)2 with High Néel Temperature

doi:10.1088/0256-307X/30/7/077403

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Abstract：We report an optical spectroscopy study on an iron-selenide single crystal of insulating Cs_0.8(Fe_1.05Se)₂ with relatively high Néel temperature. The resistivity and magnetization measurements reveal a semiconductor behavior with T_N=492 K. The sample has been examined in the temperature range from 10 K up to 500 K by using infrared measurement. The low frequency optical measurement implies an insulating response with a major absorption near 0.31 eV. The double-peak structure in the mid-infrared region and the low-frequency phonon modes support the presence of the blocked anti-ferromagnetism. The infrared measurement reveals no signature of SDW-type energy gap formation below the anti-ferromagnetic-order temperature.

收稿日期: 2013-03-13 出版日期: 2013-11-21

:	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)

引用本文:

. [J]. 中国物理快报, 2013, 30(7): 77403-077403.
YUAN Rui-Hua, DONG Tao, WANG Nan-Lin . The Optical Study of Single Crystalline Cs_0.8(Fe_1.05Se)₂ with High Néel Temperature. Chin. Phys. Lett., 2013, 30(7): 77403-077403.

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https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/30/7/077403 或 https://cpl.iphy.ac.cn/CN/Y2013/V30/I7/77403

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