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Effect of antiferromagnetic ordering on temperature dependent superconducting gap in ErNi2B2C: Laser-photoemission spectroscopy
- Source :
-
Physica C . Oct2009, Vol. 469 Issue 15-20, p928-931. 4p. - Publication Year :
- 2009
-
Abstract
- Abstract: 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 T N. 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. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09214534
- Volume :
- 469
- Issue :
- 15-20
- Database :
- Academic Search Index
- Journal :
- Physica C
- Publication Type :
- Academic Journal
- Accession number :
- 43808767
- Full Text :
- https://doi.org/10.1016/j.physc.2009.05.101