You are here

Isotope effect on electron-phonon interaction in the multiband superconductor MgB2

TitleIsotope effect on electron-phonon interaction in the multiband superconductor MgB2
Publication TypeJournal Article
Year of Publication2016
AuthorsMou, DX, Manni, S, Taufour, V, Wu, Y, Huang, LN, Bud'ko, SL, Canfield, PC, Kaminski, A
JournalPhysical Review B
Volume93
Pagination144504
Date Published04
Type of ArticleArticle
ISBN Number2469-9950
Accession NumberWOS:000373568400005
Keywordsboron, cuprate superconductors, origin, physics, spectra, temperature
Abstract

We investigate the effect of isotope substitution on the electron-phonon interaction in the multiband superconductor MgB2 using tunable laser-based angle-resolved photoemission spectroscopy. The kink structure around 70 meV in the sigma band, which is caused by electron coupling to the E-2g phonon mode, is shifted to higher binding energy by similar to 3.5 meV in (MgB2)-B-10 and the shift is not affected by superconducting transition. These results serve as the benchmark for investigations of isotope effects in known, unconventional superconductors and newly discovered superconductors where the origin of pairing is unknown.

DOI10.1103/PhysRevB.93.144504
Custom 1

Complex States

Alternate JournalPhys. Rev. B