Isotope effect on electron-phonon interaction in the multiband superconductor <math><msub><mi mathvariant='normal'>MgB</mi><mn>2</mn></msub></math> [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy. Office of Basic Energy Sciences, 2016.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description:: Article numbers 144,504 : digital, PDF file
Additional Creators:: Ames Laboratory, United States. Department of Energy. Office of Basic Energy Sciences, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

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 σ band, which is caused by electron coupling to the E2g phonon mode, is shifted to higher binding energy by ~3.5 meV in Mg10B2 and the shift is not affected by superconducting transition. Furthermore, 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.

Report Numbers:

E 1.99:is-j--8970
is-j--8970

Subject(s):

Condensed Matter Physics, Superconductivity And Superfluidity

Note:

Published through SciTech Connect.
04/07/2016.
"is-j--8970"
Physical Review B 93 14 ISSN 2469-9950; PRBMDO AM
Daixiang Mou; Soham Manni; Valentin Taufour; Yun Wu; Lunan Huang; S. L. Bud'ko; P. C. Canfield; Adam Kaminski.

Funding Information:

AC02-07CH11358

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