Localization of electronic states resulting from electronic topological transitions in the Mo$_{1-x}$Re$_x$ alloys: A photoemission study
| Autor: | Chandra, L. S. Sharath, Sundar, Shyam, Banik, Soma, Ramjan, SK., Chattopadhyay, M. K., Jha, S. N., Roy, S. B. |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | J. Appl. Phys. 127, 163906 (2020) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1063/1.5143836 |
| Popis: | 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. Comment: 14 pages, 3 figures, 1 table |
| Databáze: | arXiv |
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