Interband scattering in MgB2
R.P.S.M. Lobo, M. Elsen, P. Monod, J.J. Tu, Eun-Mi Choi, Hyeong-Jin, Kim, W. N. Kang, Sung-Ik Lee, R.J. Cava, and G.L. Carr
TL;DR
This paper investigates the interband scattering mechanism in MgB2, proposing a phonon-mediated energy transfer process involving E2g phonons, based on infrared and electron spin resonance measurements.
Contribution
It introduces a new phonon-mediated model for interband scattering in MgB2 supported by experimental evidence.
Findings
Evidence of phonon-mediated energy transfer between bands
Coupling of quasiparticles to E2g phonons identified
Supports a new understanding of MgB2's electronic interactions
Abstract
The scattering process responsible for connecting the bands remains one of the last open questions on the physical properties of MgB2. Through the analysis of the equilibrium and photo-induced far-infrared properties as well as electron spin resonance of MgB2 we propose a phonon mediated energy transfer process between the bands based on the coupling of quasiparticles to an E2g phonon.
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Taxonomy
TopicsSuperconductivity in MgB2 and Alloys · Physics of Superconductivity and Magnetism · Iron-based superconductors research