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| Format: | Preprint |
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2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2502.20010 |
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| _version_ | 1866911385480331264 |
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| author | De Vita, Alessandro Bigi, Chiara Romanin, Davide Watson, Matthew D. Polewczyk, Vincent Zonno, Marta Bertran, François Petersen, My Bang Motti, Federico Vinai, Giovanni Tuniz, Manuel Cilento, Federico Cuoco, Mario Andersen, Brian M. Kreisel, Andreas D'Onofrio, Luciano Jacopo Clark, Oliver J. Edmonds, Mark T. Candelora, Christopher Xu, Muxian Cheng, Siyu LaFleur, Alexander Antonelli, Tommaso Sangiovanni, Giorgio Del Re, Lorenzo Vobornik, Ivana Fujii, Jun Granozio, Fabio Miletto Sambri, Alessia Di Gennaro, Emiliano Jacobsen, Jeppe B. Jacobsen, Henrik Cojocariu, Iulia Szpytma, Marcin Locatelli, Andrea Mentes, Tevfik Jamet, Matthieu Jacquot, Jean-François Orgiani, Pasquale Ernstorfer, Ralph Zeljkovic, Ilija Hwang, Younghun Calandra, Matteo Miwa, Jill A. Mazzola, Federico |
| author_facet | De Vita, Alessandro Bigi, Chiara Romanin, Davide Watson, Matthew D. Polewczyk, Vincent Zonno, Marta Bertran, François Petersen, My Bang Motti, Federico Vinai, Giovanni Tuniz, Manuel Cilento, Federico Cuoco, Mario Andersen, Brian M. Kreisel, Andreas D'Onofrio, Luciano Jacopo Clark, Oliver J. Edmonds, Mark T. Candelora, Christopher Xu, Muxian Cheng, Siyu LaFleur, Alexander Antonelli, Tommaso Sangiovanni, Giorgio Del Re, Lorenzo Vobornik, Ivana Fujii, Jun Granozio, Fabio Miletto Sambri, Alessia Di Gennaro, Emiliano Jacobsen, Jeppe B. Jacobsen, Henrik Cojocariu, Iulia Szpytma, Marcin Locatelli, Andrea Mentes, Tevfik Jamet, Matthieu Jacquot, Jean-François Orgiani, Pasquale Ernstorfer, Ralph Zeljkovic, Ilija Hwang, Younghun Calandra, Matteo Miwa, Jill A. Mazzola, Federico |
| contents | Altermagnetism defies conventional classifications of collinear magnetic phases, standing apart from ferromagnetism and antiferromagnetism with its unique combination of spin-dependent symmetries, net-zero magnetization, and anomalous Hall transport. Although altermagnetic states have been realized experimentally, their integration into functional devices has been hindered by the structural rigidity and poor tunability of existing materials. First, through cobalt intercalation of the superconducting 2H-NbSe$_2$ polymorph, we induce and stabilize a robust altermagnetic phase and using both theory and experiment, we directly observe the lifting of Kramers degeneracy. Additionally, we present spectroscopic insight into a previously hinted low-temperature phase, and provide evidence of its electronic origin. While shedding light on overlooked aspects of altermagnetism, these findings open pathways to spin-based technologies and lay a foundation for advancing the emerging field of altertronics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_20010 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Robust spin splitting and fermiology in a layered altermagnet De Vita, Alessandro Bigi, Chiara Romanin, Davide Watson, Matthew D. Polewczyk, Vincent Zonno, Marta Bertran, François Petersen, My Bang Motti, Federico Vinai, Giovanni Tuniz, Manuel Cilento, Federico Cuoco, Mario Andersen, Brian M. Kreisel, Andreas D'Onofrio, Luciano Jacopo Clark, Oliver J. Edmonds, Mark T. Candelora, Christopher Xu, Muxian Cheng, Siyu LaFleur, Alexander Antonelli, Tommaso Sangiovanni, Giorgio Del Re, Lorenzo Vobornik, Ivana Fujii, Jun Granozio, Fabio Miletto Sambri, Alessia Di Gennaro, Emiliano Jacobsen, Jeppe B. Jacobsen, Henrik Cojocariu, Iulia Szpytma, Marcin Locatelli, Andrea Mentes, Tevfik Jamet, Matthieu Jacquot, Jean-François Orgiani, Pasquale Ernstorfer, Ralph Zeljkovic, Ilija Hwang, Younghun Calandra, Matteo Miwa, Jill A. Mazzola, Federico Strongly Correlated Electrons Materials Science Altermagnetism defies conventional classifications of collinear magnetic phases, standing apart from ferromagnetism and antiferromagnetism with its unique combination of spin-dependent symmetries, net-zero magnetization, and anomalous Hall transport. Although altermagnetic states have been realized experimentally, their integration into functional devices has been hindered by the structural rigidity and poor tunability of existing materials. First, through cobalt intercalation of the superconducting 2H-NbSe$_2$ polymorph, we induce and stabilize a robust altermagnetic phase and using both theory and experiment, we directly observe the lifting of Kramers degeneracy. Additionally, we present spectroscopic insight into a previously hinted low-temperature phase, and provide evidence of its electronic origin. While shedding light on overlooked aspects of altermagnetism, these findings open pathways to spin-based technologies and lay a foundation for advancing the emerging field of altertronics. |
| title | Robust spin splitting and fermiology in a layered altermagnet |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2502.20010 |