Time Reversal Symmetry Breaking Superconductors: Sr<sub>2</sub>RuO<sub>4</sub> and Beyond
Recent work done on the time reversal symmetry (TRS) breaking superconductors is reviewed in this paper. The special attention is paid to Sr<inline-formula> <math display="inline"> <semantics> <msub> <mrow></mrow> <mn>2</mn> </msub> <...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-05-01
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| Series: | Condensed Matter |
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| Online Access: | https://www.mdpi.com/2410-3896/4/2/47 |
| _version_ | 1818038806882811904 |
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| author | Karol Izydor Wysokiński |
| author_facet | Karol Izydor Wysokiński |
| author_sort | Karol Izydor Wysokiński |
| collection | DOAJ |
| description | Recent work done on the time reversal symmetry (TRS) breaking superconductors is reviewed in this paper. The special attention is paid to Sr<inline-formula> <math display="inline"> <semantics> <msub> <mrow></mrow> <mn>2</mn> </msub> </semantics> </math> </inline-formula>RuO<inline-formula> <math display="inline"> <semantics> <msub> <mrow></mrow> <mn>4</mn> </msub> </semantics> </math> </inline-formula> believed to be spin triplet chiral p-wave superconductor which break TRS and is expected to posses non-trivial topological properties. The family of TRS breaking superconductors is growing relatively fast, with many of its newly discovered members being non-centrosymmetric. However not only Sr<inline-formula> <math display="inline"> <semantics> <msub> <mrow></mrow> <mn>2</mn> </msub> </semantics> </math> </inline-formula>RuO<inline-formula> <math display="inline"> <semantics> <msub> <mrow></mrow> <mn>4</mn> </msub> </semantics> </math> </inline-formula> but also many other superconductors which possess center of inversion also break TRS. The TRS is often identified by means of the muon spin relaxation (<inline-formula> <math display="inline"> <semantics> <mi>μ</mi> </semantics> </math> </inline-formula>SR) and the Kerr effect. Both methods effectively measure the appearance of the spontaneous bulk magnetic field below superconducting transition temperature. This compound provides an example of the material whose many band, multi-condensate modeling has enjoyed a number of successes, but the full understanding has not been achieved yet. We discuss in some details the properties of the material. Among them is the Kerr effect and by understanding has resulted in the discovery of the novel mechanism of the phenomenon. The mechanism is universal and thus applicable to all systems with multi-orbital character of states at the Fermi energy. |
| first_indexed | 2024-12-10T07:48:36Z |
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| institution | Directory Open Access Journal |
| issn | 2410-3896 |
| language | English |
| last_indexed | 2024-12-10T07:48:36Z |
| publishDate | 2019-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Condensed Matter |
| spelling | doaj.art-9f232683edae4cee8fcce5d37b6aac0d2022-12-22T01:57:07ZengMDPI AGCondensed Matter2410-38962019-05-01424710.3390/condmat4020047condmat4020047Time Reversal Symmetry Breaking Superconductors: Sr<sub>2</sub>RuO<sub>4</sub> and BeyondKarol Izydor Wysokiński0Institute of Physics, M. Curie-Skłodowska University, ul. Radziszewskiego 10, 20-031 Lublin, PolandRecent work done on the time reversal symmetry (TRS) breaking superconductors is reviewed in this paper. The special attention is paid to Sr<inline-formula> <math display="inline"> <semantics> <msub> <mrow></mrow> <mn>2</mn> </msub> </semantics> </math> </inline-formula>RuO<inline-formula> <math display="inline"> <semantics> <msub> <mrow></mrow> <mn>4</mn> </msub> </semantics> </math> </inline-formula> believed to be spin triplet chiral p-wave superconductor which break TRS and is expected to posses non-trivial topological properties. The family of TRS breaking superconductors is growing relatively fast, with many of its newly discovered members being non-centrosymmetric. However not only Sr<inline-formula> <math display="inline"> <semantics> <msub> <mrow></mrow> <mn>2</mn> </msub> </semantics> </math> </inline-formula>RuO<inline-formula> <math display="inline"> <semantics> <msub> <mrow></mrow> <mn>4</mn> </msub> </semantics> </math> </inline-formula> but also many other superconductors which possess center of inversion also break TRS. The TRS is often identified by means of the muon spin relaxation (<inline-formula> <math display="inline"> <semantics> <mi>μ</mi> </semantics> </math> </inline-formula>SR) and the Kerr effect. Both methods effectively measure the appearance of the spontaneous bulk magnetic field below superconducting transition temperature. This compound provides an example of the material whose many band, multi-condensate modeling has enjoyed a number of successes, but the full understanding has not been achieved yet. We discuss in some details the properties of the material. Among them is the Kerr effect and by understanding has resulted in the discovery of the novel mechanism of the phenomenon. The mechanism is universal and thus applicable to all systems with multi-orbital character of states at the Fermi energy.https://www.mdpi.com/2410-3896/4/2/47time reversal symmetry breakingspin triplet superconductivitychiral order parameterpolar Kerr effect |
| spellingShingle | Karol Izydor Wysokiński Time Reversal Symmetry Breaking Superconductors: Sr<sub>2</sub>RuO<sub>4</sub> and Beyond Condensed Matter time reversal symmetry breaking spin triplet superconductivity chiral order parameter polar Kerr effect |
| title | Time Reversal Symmetry Breaking Superconductors: Sr<sub>2</sub>RuO<sub>4</sub> and Beyond |
| title_full | Time Reversal Symmetry Breaking Superconductors: Sr<sub>2</sub>RuO<sub>4</sub> and Beyond |
| title_fullStr | Time Reversal Symmetry Breaking Superconductors: Sr<sub>2</sub>RuO<sub>4</sub> and Beyond |
| title_full_unstemmed | Time Reversal Symmetry Breaking Superconductors: Sr<sub>2</sub>RuO<sub>4</sub> and Beyond |
| title_short | Time Reversal Symmetry Breaking Superconductors: Sr<sub>2</sub>RuO<sub>4</sub> and Beyond |
| title_sort | time reversal symmetry breaking superconductors sr sub 2 sub ruo sub 4 sub and beyond |
| topic | time reversal symmetry breaking spin triplet superconductivity chiral order parameter polar Kerr effect |
| url | https://www.mdpi.com/2410-3896/4/2/47 |
| work_keys_str_mv | AT karolizydorwysokinski timereversalsymmetrybreakingsuperconductorssrsub2subruosub4subandbeyond |