| Literature DB >> 18233316 |
G Blumberg1, A Mialitsin, B S Dennis, M V Klein, N D Zhigadlo, J Karpinski.
Abstract
We report observation of Leggett's collective mode in a multiband MgB2 superconductor with Tc=39 K arising from the fluctuations in the relative phase between two superconducting condensates. The novel mode is observed by Raman spectroscopy at 9.4 meV in the fully symmetric scattering channel. The observed mode frequency is consistent with theoretical considerations based on first-principles computations.Entities:
Year: 2007 PMID： 18233316 DOI： 10.1103/PhysRevLett.99.227002
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161