2010/08/31 by Yukihiro Ota, Masahiko Machida, Tomio Koyama +1 · 41 citations
Materials Science · Mathematics · Physics and Astronomy · #Excitation #Iron-based superconductors research #Josephson effect #Mathematics #Pairing #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Superconductivity #Superconductivity in MgB2 and Alloys #Superfluidity #Symmetry (geometry) #Theoretical physics #cond-mat.str-el #cond-mat.supr-con #quant-ph
paper · pdf · doi:10.1103/physrevb.83.060507
published in Physical Review B 83(6) (American Physical Society) · 4 pages, 3 figures
openalex publication_date 2011/02/23 · arxiv created 2011/02/24 · arxiv updated 2011/02/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
One important way to characterize the states having a gauge symmetry spontaneously broken over multibands is to look at their collective excitation modes. We find that a three-band system has multiple Leggett modes with significantly different masses, which can be classified into different dynamical classes according to whether multiple interband Josephson currents add or cancel. This provides a way to dynamically characterize multiband superconductivity while the pairing symmetry is a static property.