Orbital magnetization in the Nb-substituted Kagome metal CsV$_3$Sb$_5$
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , , , , , , , , , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866908624877518848 |
|---|---|
| author | Elmers, H. J. Tkach, O. Lytvynenko, Y. Agarwal, H. Biswas, D. Liu, J. Haghighirad, A. -A. Merz, M. Pakhira, S. Garbarino, G. Lee, T. -L. Demsar, J. Schonhense, G. Tacon, M. Le Fedchenko, O. |
| author_facet | Elmers, H. J. Tkach, O. Lytvynenko, Y. Agarwal, H. Biswas, D. Liu, J. Haghighirad, A. -A. Merz, M. Pakhira, S. Garbarino, G. Lee, T. -L. Demsar, J. Schonhense, G. Tacon, M. Le Fedchenko, O. |
| contents | This study uses angle-resolved photoemission spectroscopy to examine the low-temperature electronic structure of Cs(V$_{0.95}$Nb$_{0.05}$)$_3$Sb$_5$, demonstrating that partially substituting V atoms with isoelectronic Nb atoms results in \blue{an increase of the band width} and enhanced gap opening at the Dirac-like crossings due to the resulting chemical pressure. This increases the magnetic circular dichroism signal in the angular distribution (MCDAD) compared to CsV$_3$Sb$_5$, enabling detailed analysis of magnetic circular dichroism in several bands near the Fermi level. These results \blue{substantiate} the predicted coupling of orbital magnetic moments to three van Hove singularities near the Fermi level at M points. Previous studies have observed that Nb doping \blue{lowers the charge density transition temperature} and increases the critical temperature for superconductivity. This article demonstrates that Nb doping concomitantly increases the magnetic circular dichroism signal attributed to orbital moments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_01238 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Orbital magnetization in the Nb-substituted Kagome metal CsV$_3$Sb$_5$ Elmers, H. J. Tkach, O. Lytvynenko, Y. Agarwal, H. Biswas, D. Liu, J. Haghighirad, A. -A. Merz, M. Pakhira, S. Garbarino, G. Lee, T. -L. Demsar, J. Schonhense, G. Tacon, M. Le Fedchenko, O. Materials Science This study uses angle-resolved photoemission spectroscopy to examine the low-temperature electronic structure of Cs(V$_{0.95}$Nb$_{0.05}$)$_3$Sb$_5$, demonstrating that partially substituting V atoms with isoelectronic Nb atoms results in \blue{an increase of the band width} and enhanced gap opening at the Dirac-like crossings due to the resulting chemical pressure. This increases the magnetic circular dichroism signal in the angular distribution (MCDAD) compared to CsV$_3$Sb$_5$, enabling detailed analysis of magnetic circular dichroism in several bands near the Fermi level. These results \blue{substantiate} the predicted coupling of orbital magnetic moments to three van Hove singularities near the Fermi level at M points. Previous studies have observed that Nb doping \blue{lowers the charge density transition temperature} and increases the critical temperature for superconductivity. This article demonstrates that Nb doping concomitantly increases the magnetic circular dichroism signal attributed to orbital moments. |
| title | Orbital magnetization in the Nb-substituted Kagome metal CsV$_3$Sb$_5$ |
| topic | Materials Science |
| url | https://arxiv.org/abs/2511.01238 |