High resolution X-ray photoemission of SrCu2O2

被引：12

作者：

Lynch, CCB

Egdell, RG

Law, DSL

机构：

[1] Univ Oxford, Inorgan Chem Lab, Dept Chem, Oxford OX1 3QR, England

[2] Natl Ctr Electron Spect & Surface Anal, Daresbury Lab, Warrington WA4 4AD, Cheshire, England

来源：

CHEMICAL PHYSICS LETTERS | 2005年 / 401卷 / 1-3期

关键词：

D O I：

10.1016/j.cplett.2004.11.042

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Pure and K-doped SrCu2O2 have been studied by high resolution X-ray photoemission spectroscopy. Valence band photoemission spectra are shown to be in good agreement with the bandstructure calculations of Ohta et al. and are dominated by the Cu 3d partial density of states. Conductivity measurements reveal that the Fermi level in nominally undoped material is pinned by acceptor states 0.24 eV above the valence band edge but moves toward the valence band with increasing doping. Changes in core and valence level binding energies with doping mirror the changes in the transport activation energy. (C) 2004 Elsevier B.V. All rights reserved.

引用

收藏

页码：223 / 226

页数：4

相关论文

共 21 条

[1]

Briggs D., 1983, Practical Surface Analysis by Auger and X-ray Photoelectron Spectroscopy

[2] An experimental and theoretical investigation of the electronic structure of CdO [J].

Dou, Y ;

Egdell, RG ;

Law, DSL ;

Harrison, NM ;

Searle, BG .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1998, 10 (38) :8447-8458

[3] Competition between initial- and final-state effects in valence- and core-level x-ray photoemission of Sb-doped SnO2 [J].

Egdell, RG ;

Rebane, J ;

Walker, TJ ;

Law, DSL .

PHYSICAL REVIEW B, 1999, 59 (03) :1792-1799

[4] Transparent and conducting ITO films:: new developments and applications [J].

Granqvist, CG ;

Hultåker, A .

THIN SOLID FILMS, 2002, 411 (01) :1-5

[5] Near-UV emitting diodes based on a transparent p-n Junction composed of heteroepitaxially grown p-SrCu2O2 and n-Zno [J].

Hosono, H ;

Ohta, H ;

Hayashi, K ;

Orita, M ;

Hirano, M .

JOURNAL OF CRYSTAL GROWTH, 2002, 237 :496-502

[6] p-type electrical conduction in ZnO thin films by Ga and N codoping [J].

Joseph, M ;

Tabata, H ;

Kawai, T .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1999, 38 (11A) :L1205-L1207

[7] P-type electrical conduction in transparent thin films of CuAlO2 [J].

Kawazoe, H ;

Yasukawa, M ;

Hyodo, H ;

Kurita, M ;

Yanagi, H ;

Hosono, H .

NATURE, 1997, 389 (6654) :939-942

[8] SrCu2O2:: A p-type conductive oxide with wide band gap [J].

Kudo, A ;

Yanagi, H ;

Hosono, H ;

Kawazoe, H .

APPLIED PHYSICS LETTERS, 1998, 73 (02) :220-222

[9] Photoemission and STM study of the electronic structure of Nb-doped TiO2 [J].

Morris, D ;

Dou, Y ;

Rebane, J ;

Mitchell, CEJ ;

Egdell, RG ;

Law, DSL ;

Vittadini, A ;

Casarin, M .

PHYSICAL REVIEW B, 2000, 61 (20) :13445-13457

[10] First-principles study of transparent p-type conductive SrCu2O2 and related compounds -: art. no. 075111 [J].

Nie, XL ;

Wei, SH ;

Zhang, SB .

PHYSICAL REVIEW B, 2002, 65 (07) :1-8