Multiple superconducting gap in MgB2 was studied using high-resolution photoemission spectroscopy. A coherent peak with a shoulder structure was observed in sharp contrast to that expected from a simple isotropic-gap opening in the superconducting spectrum measured at 5.4 K. Through temperature dependent study both the gaps were found to close at the bulk transition temperature.
|Number of pages||4|
|Journal||Physical Review Letters|
|Publication status||Published - Oct 22 2001|
ASJC Scopus subject areas
- Physics and Astronomy(all)