Published October 15, 2009
| Version v1
Journal article
Effect of antiferromagnetic ordering on temperature dependent superconducting gap in ErNi2B2C: Laser-photoemission spectroscopy
Creators
- 1. Institute for Solid State Physics (ISSP), University of Tokyo, Kashiwa 277-8581 (Japan)
- 2. The Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530 (Japan)
- 3. National Institute for Material Research, Tsukuba, Ibaraki 305-0047 (Japan)
- 4. RIKEN SPring-8 Center, Sayo-gun, Hyogo 679-5143 (Japan)
- 5. Beijing Center for Crystal R and D, Chinese Academy of Science Zhongguancun, Beijing 100080 (China)
Description
We have performed temperature (T)-dependent laser-photoemission spectroscopy of antiferromagnetic (AF) superconductor ErNi2B2C to study the electronic structure, especially the effect of AF ordering in T-dependent superconducting (SC) gap. To estimate the values of T-dependent SC gap, we fitted the experimental data by Dynes function having an anisotropic s-wave SC gap. From the fitting results, we find a sudden deviation from the BCS prediction just below TN. This observation can be well explained by the theoretical model, indicating that the origin of anomalous T-dependence is competition between rapid evolution of AF molecular field and SC condensation energy.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.physc.2009.05.101Additional details
Identifiers
- DOI
- 10.1016/j.physc.2009.05.101;
- PII
- S0921-4534(09)00186-5;
Publishing Information
- Journal Title
- Physica. C, Superconductivity
- Journal Volume
- 469
- Journal Issue
- 15-20
- Journal Page Range
- p. 928-931
- ISSN
- 0921-4534
- CODEN
- PHYCE6
Conference
- Title
- 21. international symposium on superconductivity
- Acronym
- ISS 2008
- Dates
- 27-29 Oct 2008
- Place
- Tsukuba (Japan)
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 41085492
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ANISOTROPY; ANTIFERROMAGNETISM; BORON CARBIDES; BORON COMPOUNDS; CARBON COMPOUNDS; ELECTRONIC STRUCTURE; ERBIUM COMPOUNDS; FORECASTING; LASER RADIATION; NICKEL COMPOUNDS; PHOTOEMISSION; S WAVES; SPECTROSCOPY; SUPERCONDUCTORS; TEMPERATURE DEPENDENCE
- Descriptors DEC
- BORON COMPOUNDS; CARBIDES; CARBON COMPOUNDS; ELECTROMAGNETIC RADIATION; EMISSION; MAGNETISM; PARTIAL WAVES; RADIATIONS; RARE EARTH COMPOUNDS; SECONDARY EMISSION; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.