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

Research output: Contribution to journalArticlepeer-review

45 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 languageEnglish
Pages (from-to)615-618
Number of pages4
JournalJournal of the American Chemical Society
Volume139
Issue number2
DOIs
Publication statusPublished - 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

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