Semimetallic bands derived from interlayer electrons in the quasi-two-dimensional electride Y2C

Semimetallic bands derived from interlayer electrons in the quasi-two-dimensional electride Y2C Two-dimensional (2D) electrides are a new concept material in which anionic electrons are confined in the interlayer space between positively charged layers. We have carried out angle-resolved photoemission spectroscopy measurements on Y2C, which is a possible 2D electride, in order to verify the formation of 2D electride states in Y2C. We clearly observe the existence of semimetallic “electride bands” near the Fermi level, as predicted by ab initio calculations, which conclusively demonstrates that Y2C is a quasi-2D electride with electride bands derived from interlayer anionic electrons. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)
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Semimetallic bands derived from interlayer electrons in the quasi-two-dimensional electride Y2C

Abstract

Two-dimensional (2D) electrides are a new concept material in which anionic electrons are confined in the interlayer space between positively charged layers. We have carried out angle-resolved photoemission spectroscopy measurements on Y2C, which is a possible 2D electride, in order to verify the formation of 2D electride states in Y2C. We clearly observe the existence of semimetallic “electride bands” near the Fermi level, as predicted by ab initio calculations, which conclusively demonstrates that Y2C is a quasi-2D electride with electride bands derived from interlayer anionic electrons.
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Publisher
American Physical Society (APS)
Copyright
Copyright © ©2017 American Physical Society
ISSN
1098-0121
eISSN
1550-235X
D.O.I.
10.1103/PhysRevB.96.045101
Publisher site
See Article on Publisher Site

Abstract

Two-dimensional (2D) electrides are a new concept material in which anionic electrons are confined in the interlayer space between positively charged layers. We have carried out angle-resolved photoemission spectroscopy measurements on Y2C, which is a possible 2D electride, in order to verify the formation of 2D electride states in Y2C. We clearly observe the existence of semimetallic “electride bands” near the Fermi level, as predicted by ab initio calculations, which conclusively demonstrates that Y2C is a quasi-2D electride with electride bands derived from interlayer anionic electrons.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Jul 5, 2017

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