Published August 1, 2001
| Version v1
Journal article
X-ray photoemission study of MgB2
Creators
- 1. National Creative Research Initiative Center for Superconductivity and Department of Physics, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of)
- 2. Center for Space Microelectronics Technology, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109-8099 (United States)
Description
A c-axis oriented thin film and a high-density sintered pellet of MgB2 have been studied by x-ray photoemission spectroscopy, and compared to measurements from MgO and MgF2 single crystals. The as-grown surface has a layer which is Mg-rich and oxidized, which is effectively removed by a nonaqueous etchant. The subsurface region of the pellet is Mg deficient. This nonideal near-surface region may explain varied scanning tunneling spectroscopy results. The MgB2 core level and Auger signals are similar to measurements from metallic Mg and transition-metal diborides, and the measured valence band is consistent with the calculated density of states
Additional details
Identifiers
- DOI
- 10.1103/PhysRevB.64.052510;
- arXiv
- arXiv:cond-mat/0103215v2;
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter and Materials Physics
- Journal Volume
- 64
- Journal Issue
- 5
- Journal Page Range
- p. 052510-052510.4
- ISSN
- 1098-0121
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 35094057
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- COMPARATIVE EVALUATIONS; DENSITY; LAYERS; MAGNESIUM BORIDES; MAGNESIUM FLUORIDES; MAGNESIUM OXIDES; MONOCRYSTALS; PELLETS; PHOTOEMISSION; SCANNING TUNNELING MICROSCOPY; SUPERCONDUCTORS; SURFACES; THIN FILMS; TUNNEL EFFECT; VALENCE; X-RAY PHOTOELECTRON SPECTROSCOPY
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BORIDES; BORON COMPOUNDS; CHALCOGENIDES; CRYSTALS; ELECTRON SPECTROSCOPY; EMISSION; EVALUATION; FILMS; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; MAGNESIUM COMPOUNDS; MICROSCOPY; OXIDES; OXYGEN COMPOUNDS; PHOTOELECTRON SPECTROSCOPY; PHYSICAL PROPERTIES; SECONDARY EMISSION; SPECTROSCOPY
Optional Information
- Notes
- (c) 2001 The American Physical Society