Strong Localization of Anionic Electrons at Interlayer for Electrical and Magnetic Anisotropy in Two-Dimensional Y2C Electride

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Title
Strong Localization of Anionic Electrons at Interlayer for Electrical and Magnetic Anisotropy in Two-Dimensional Y2C Electride
Author(s)
Jong-Ho Park; Kimoon Lee; Seung Yong Lee; Chandani N. Nandadasa; Sungho Kim; Kyu Hyoung Lee; Young Hee Lee; Hideo Hosono; Seong-Gon Kim; Sung Wng Kim
Publication Date
2017-01
Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.139, no.2, pp.615 - 618
Publisher
AMER CHEMICAL SOC
Abstract
We have synthesized a single crystalline Y2C electride of centimeter-scale by floating-zone method and successfully characterized its anisotropic electrical and magnetic properties. In-plane resistivity upturn at low temperature together with anisotropic behavior of negative magnetoresistance is ascribed to the stronger suppression of spin fluctuation along in-plane than that along the c-axis, verifying the existence of magnetic moments preferred for the c-axis. A superior magnetic moment along the c-axis to that along the in-plane direction strongly demonstrates the anisotropic magnetism of Y2C electride containing a magnetically easy axis. It is clarified from the theoretical calculations that the anisotropic nature of the Y2C electride originates from strongly localized anionic electrons with an inherent magnetic anisotropy in the interlayer spaces. © 2016 American Chemical Society
URI
https://pr.ibs.re.kr/handle/8788114/3509
ISSN
0002-7863
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
Files in This Item:
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