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| Hlavní autoři: | , , , , , |
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| Médium: | Preprint |
| Vydáno: |
2023
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| Témata: | |
| On-line přístup: | https://arxiv.org/abs/2309.01607 |
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| _version_ | 1866913452996427776 |
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| author | Hellenes, Anna Birk Jungwirth, Tomáš Jaeschke-Ubiergo, Rodrigo Chakraborty, Atasi Sinova, Jairo Šmejkal, Libor |
| author_facet | Hellenes, Anna Birk Jungwirth, Tomáš Jaeschke-Ubiergo, Rodrigo Chakraborty, Atasi Sinova, Jairo Šmejkal, Libor |
| contents | The p-wave Cooper-pairing instability in superfluid $^{3}$He, characterized by a parity-breaking excitation gap, is regarded as one of the most rich and complex phenomena in physics. The possibility of a counterpart unconventional p-wave ordering of interacting fermions, in which a Fermi surface spontaneously breaks the parity symmetry, has been an open problem for many decades. Here we identify the realization of the counterpart of p-wave superfluidity in magnetism. We demonstrate a strong parity-breaking and anisotropic symmetry lowering of spin-polarized and time-reversal symmetric Fermi surfaces in a representative p-wave magnet CeNiAsO. As a direct experimental signature we predict a large spontaneous anisotropy of the resistivity. Abundant and robust realizations of the unconventional p-wave magnetism can be identified from suitable non-relativistic crystal-lattice and spin symmetries, without requiring strong correlations and extreme external conditions. This opens new prospects in fields ranging from topological phenomena to spintronics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2309_01607 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | P-wave magnets Hellenes, Anna Birk Jungwirth, Tomáš Jaeschke-Ubiergo, Rodrigo Chakraborty, Atasi Sinova, Jairo Šmejkal, Libor Mesoscale and Nanoscale Physics The p-wave Cooper-pairing instability in superfluid $^{3}$He, characterized by a parity-breaking excitation gap, is regarded as one of the most rich and complex phenomena in physics. The possibility of a counterpart unconventional p-wave ordering of interacting fermions, in which a Fermi surface spontaneously breaks the parity symmetry, has been an open problem for many decades. Here we identify the realization of the counterpart of p-wave superfluidity in magnetism. We demonstrate a strong parity-breaking and anisotropic symmetry lowering of spin-polarized and time-reversal symmetric Fermi surfaces in a representative p-wave magnet CeNiAsO. As a direct experimental signature we predict a large spontaneous anisotropy of the resistivity. Abundant and robust realizations of the unconventional p-wave magnetism can be identified from suitable non-relativistic crystal-lattice and spin symmetries, without requiring strong correlations and extreme external conditions. This opens new prospects in fields ranging from topological phenomena to spintronics. |
| title | P-wave magnets |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2309.01607 |