Localization of electronic states resulting from electronic topological transitions in the Mo${}_{1-x}$Re${}_x$ alloys: A photoemission study

Abstract

We present the results of resonant photoemission spectroscopy experiments on the Mo${}_{1-x}$Re${}_x$ alloy compositions spanning over two electronic topological transitions (ETT) at the critical concentrations $x_{C1}$ = 0.05 and $x_{C2}$ = 0.11. The photoelectrons show an additional resonance ($R3$) in the constant initial state (CIS) spectra of the alloys along with two resonances ($R1$ and $R2$) which are similar to those observed in molybdenum. All the resonances show Fano-like line shapes. The asymmetry parameter $q$ of the resonances $R1$ and $R3$ of the alloys is observed to be large and negative. Our analysis suggests that the origin of large negative q is associated with phonon assisted inter band scattering between the Mo-like states and the narrow band that appeared due to the ETT.

arXiv comment14 pages, 3 figures, 1 table

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Cited by in corpus (1)

• Temperature induced first order electronic topological transition in $\beta$-Ag${}_2$Se