Strong localization of anionic electrons at interlayer for electrical and magnetic anisotropy in two-dimensional Y2C electride

Jongho 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

doi:10.1021/jacs.6b11950

Strong localization of anionic electrons at interlayer for electrical and magnetic anisotropy in two-dimensional Y₂C electride

Jongho 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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

57 Citations (Scopus)

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.

Original language	English
Pages (from-to)	615-618
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	139
Issue number	2
DOIs	https://doi.org/10.1021/jacs.6b11950
Publication status	Published - 2017 Jan 18

Bibliographical note

Funding Information:
This research was supported by the Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT, and Future Planning (2015M3D1A1070639). It was also partly supported by the World Research Hub Initiative (WRHI) program, Tokyo Tech, and the Center for Computational Science (CCS) at Mississippi State University. Computer time allocation has been provided by the High Performance Computing Collaboratory (HPC2) at Mississippi State University.

Publisher Copyright:
© 2016 American Chemical Society.

All Science Journal Classification (ASJC) codes

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

Access to Document

10.1021/jacs.6b11950

Cite this

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title = "Strong localization of anionic electrons at interlayer for electrical and magnetic anisotropy in two-dimensional Y2C electride",

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.",

author = "Jongho Park and Kimoon Lee and Lee, {Seung Yong} and Nandadasa, {Chandani N.} and Sungho Kim and Lee, {Kyu Hyoung} and Lee, {Young Hee} and Hideo Hosono and Kim, {Seong Gon} and Kim, {Sung Wng}",

note = "Funding Information: This research was supported by the Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT, and Future Planning (2015M3D1A1070639). It was also partly supported by the World Research Hub Initiative (WRHI) program, Tokyo Tech, and the Center for Computational Science (CCS) at Mississippi State University. Computer time allocation has been provided by the High Performance Computing Collaboratory (HPC2) at Mississippi State University. Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

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AU - Park, Jongho

AU - Lee, Kimoon

AU - Lee, Seung Yong

AU - Nandadasa, Chandani N.

AU - Kim, Sungho

AU - Lee, Kyu Hyoung

AU - Lee, Young Hee

AU - Hosono, Hideo

AU - Kim, Seong Gon

AU - Kim, Sung Wng

N1 - Funding Information: This research was supported by the Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT, and Future Planning (2015M3D1A1070639). It was also partly supported by the World Research Hub Initiative (WRHI) program, Tokyo Tech, and the Center for Computational Science (CCS) at Mississippi State University. Computer time allocation has been provided by the High Performance Computing Collaboratory (HPC2) at Mississippi State University. Publisher Copyright: © 2016 American Chemical Society.

PY - 2017/1/18

Y1 - 2017/1/18

N2 - 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.

AB - 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.

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