Evidence for Anionic Excess Electrons in a Quasi-Two-Dimensional Ca2N Electride by Angle-Resolved Photoemission Spectroscopy

Ji Seop Oh; Chang Jong Kang; Ye Ji Kim; Soobin Sinn; Moonsup Han; Young Jun Chang; Byeong Gyu Park; Sung Wng Kim; Byung Il Min; Hyeong Do Kim; Tae Won Noh

doi:10.1021/jacs.5b12668

Evidence for Anionic Excess Electrons in a Quasi-Two-Dimensional Ca₂N Electride by Angle-Resolved Photoemission Spectroscopy

Ji Seop Oh, Chang Jong Kang, Ye Ji Kim, Soobin Sinn, Moonsup Han, Young Jun Chang, Byeong Gyu Park, Sung Wng Kim, Byung Il Min, Hyeong Do Kim, Tae Won Noh

Department of Physics

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57 Scopus citations

Abstract

Angle-resolved photoemission spectroscopy (ARPES) study of a layered electride Ca₂N was carried out to reveal its quasi-two-dimensional electronic structure. The band dispersions and the Fermi-surface map are consistent with the density functional theory results except for a chemical potential shift that may originate from the high reactivity of surface excess electrons. Thus, the existence of anionic excess electrons in the interlayer region of Ca₂N is strongly supported by ARPES.

Original language	English
Pages (from-to)	2496-2499
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	138
Issue number	8
DOIs	https://doi.org/10.1021/jacs.5b12668
State	Published - 2 Mar 2016

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title = "Evidence for Anionic Excess Electrons in a Quasi-Two-Dimensional Ca2N Electride by Angle-Resolved Photoemission Spectroscopy",

abstract = "Angle-resolved photoemission spectroscopy (ARPES) study of a layered electride Ca2N was carried out to reveal its quasi-two-dimensional electronic structure. The band dispersions and the Fermi-surface map are consistent with the density functional theory results except for a chemical potential shift that may originate from the high reactivity of surface excess electrons. Thus, the existence of anionic excess electrons in the interlayer region of Ca2N is strongly supported by ARPES.",

author = "Oh, {Ji Seop} and Kang, {Chang Jong} and Kim, {Ye Ji} and Soobin Sinn and Moonsup Han and Chang, {Young Jun} and Park, {Byeong Gyu} and Kim, {Sung Wng} and Min, {Byung Il} and Kim, {Hyeong Do} and Noh, {Tae Won}",

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AU - Oh, Ji Seop

AU - Kang, Chang Jong

AU - Kim, Ye Ji

AU - Sinn, Soobin

AU - Han, Moonsup

AU - Chang, Young Jun

AU - Park, Byeong Gyu

AU - Kim, Sung Wng

AU - Min, Byung Il

AU - Kim, Hyeong Do

AU - Noh, Tae Won

PY - 2016/3/2

Y1 - 2016/3/2

N2 - Angle-resolved photoemission spectroscopy (ARPES) study of a layered electride Ca2N was carried out to reveal its quasi-two-dimensional electronic structure. The band dispersions and the Fermi-surface map are consistent with the density functional theory results except for a chemical potential shift that may originate from the high reactivity of surface excess electrons. Thus, the existence of anionic excess electrons in the interlayer region of Ca2N is strongly supported by ARPES.

AB - Angle-resolved photoemission spectroscopy (ARPES) study of a layered electride Ca2N was carried out to reveal its quasi-two-dimensional electronic structure. The band dispersions and the Fermi-surface map are consistent with the density functional theory results except for a chemical potential shift that may originate from the high reactivity of surface excess electrons. Thus, the existence of anionic excess electrons in the interlayer region of Ca2N is strongly supported by ARPES.

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JF - Journal of the American Chemical Society

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ER -

Evidence for Anionic Excess Electrons in a Quasi-Two-Dimensional Ca₂N Electride by Angle-Resolved Photoemission Spectroscopy

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