Probing the local electronic structure in the H induced metal-insulator transition of Y

被引：16

作者：

Hjörvarsson, B ^{[1
]}

Guo, JH

Ahuja, R

Ward, RCC

Andersson, G

Eriksson, O

Wells, MR

Såthe, C

Agui, A

Butorin, SM

Nordgren, J

机构：

[1] Royal Inst Technol, Dept Phys Mat, S-10044 Stockholm, Sweden

[2] Univ Uppsala, Dept Phys, S-75121 Uppsala, Sweden

[3] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1999年 / 11卷 / 14期

关键词：

D O I：

10.1088/0953-8984/11/14/001

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The occupied acid unoccupied valence band states of yttrium (Y) metal, Y dihydride and Y trihydride were measured by soft x-ray emission and absorption spectroscopy. The experiments were complemented by first principles calculations. Both experiments and theory reveal the metallic character of Y and YH2 whereas YH3-delta exhibits a band gap, which was experimentally determined to be 2.5 eV. The results reveal strong hybridization between H and Y states, causing a breakdown of the rigid band model description.

引用

页码：L119 / L125

页数：7

共 25 条

[1] On the semiconducting state and structural properties of YH3 from first principles theory [J].

Ahuja, R ;

Johansson, B ;

Wills, JM ;

Eriksson, O .

APPLIED PHYSICS LETTERS, 1997, 71 (24) :3498-3500

[2]

ALEFELD G, 1978, TOPICS APPL PHYSICS, V29

[3] CHEMICAL BONDING STUDIES OF YTTRIUM COMPOUNDS BY X-RAY K-EMISSION SPECTROSCOPY [J].

BHIDE, VG ;

BHAT, NV .

JOURNAL OF APPLIED PHYSICS, 1970, 41 (07) :3159-&

[4] Resonant inelastic soft-x-ray scattering from valence-band excitations in 3d(0) compounds [J].

Butorin, SM ;

Guo, JH ;

Magnuson, M ;

Nordgren, J .

PHYSICAL REVIEW B, 1997, 55 (07) :4242-4249

[5] Low-energy d-d excitations in MnO studied by resonant x-ray fluorescence spectroscopy [J].

Butorin, SM ;

Guo, JH ;

Magnuson, M ;

Kuiper, P ;

Nordgren, J .

PHYSICAL REVIEW B, 1996, 54 (07) :4405-4408

[6] THE GAP IN YH3 AND ITS LATTICE STRUCTURE [J].

DEKKER, JP ;

VANEK, J ;

LODDER, A ;

HUIBERTS, JN .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1993, 5 (27) :4805-4816

[7] Visualization of hydrogen migration in solids using switchable mirrors [J].

den Broeder, FJA ;

van der Molen, SJ ;

Kremers, M ;

Huiberts, JN ;

Nagengast, DG ;

van Gogh, ATM ;

Huisman, WH ;

Koeman, NJ ;

Koeman, NI ;

Dam, B ;

Rector, JH ;

Plota, S ;

Haaksma, M ;

Hanzen, RMN ;

Jungblut, RM ;

Duine, PA ;

Griessen, R .

NATURE, 1998, 394 (6694) :656-658

[8] ELECTRONIC-STRUCTURE OF YTTRIUM HYDRIDE STUDIED BY X-RAY PHOTOEMISSION SPECTROSCOPY [J].

FUJIMORI, A ;

SCHLAPBACH, L .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1984, 17 (02) :341-351

[9] Logarithmic divergence of the electrical resistivity in the metal hydride YH3-delta [J].

Huiberts, JN ;

Griessen, R ;

Wijngaarden, RJ ;

Kremers, M ;

VanHaesendonck, C .

PHYSICAL REVIEW LETTERS, 1997, 79 (19) :3724-3727

[10] Yttrium and lanthanum hydride films with switchable optical properties [J].

Huiberts, JN ;

Griessen, R ;

Rector, JH ;

Wijngaarden, RJ ;

Dekker, JP ;

deGroot, DG ;

Koeman, NJ .

NATURE, 1996, 380 (6571) :231-234

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