Features of Chirality Generated by Paramagnetic Coupling to Magnetic Fields in the 3 K-Phase of Sr2RuO4
Eutectic Sr2RuO4-Ru samples show an onset of inhomogeneous superconductivity at around 3 K, which is above the bulk transition of Sr2RuO4 (SRO) with Tc≈1.5 K. This superconducting state nucleates most likely as a filamentary state at the interface between SRO and Ru-inclusions. Assuming that the sup...
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ftethz:oai:www.research-collection.ethz.ch:20.500.11850/458633 2023-05-15T16:55:52+02:00 Features of Chirality Generated by Paramagnetic Coupling to Magnetic Fields in the 3 K-Phase of Sr2RuO4 Kaneyasu, Hirono Enokida, Yuya Nomura, Takuji Hasegawa, Yasumasa Sakai, Toru Sigrist, Manfred 2020 application/application/pdf https://hdl.handle.net/20.500.11850/458633 https://doi.org/10.3929/ethz-b-000458633 en eng Physical Society of Japan info:eu-repo/semantics/altIdentifier/doi/10.7566/jpscp.30.011039 info:eu-repo/semantics/altIdentifier/isbn/978-4-89027-142-9 info:eu-repo/grantAgreement/SNF/Projekte MINT/163186 info:eu-repo/grantAgreement/SNF/Projekte MINT/184739 http://hdl.handle.net/20.500.11850/458633 doi:10.3929/ethz-b-000458633 urn:isbn:978-4-89027-142-9 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International CC-BY JPS Conference Proceedings, 30 Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES 2019) Chiral superconductivity Sr2RuO4 3K-phase Ginzburg-Landau theory info:eu-repo/semantics/conferenceObject Conference Paper info:eu-repo/semantics/publishedVersion 2020 ftethz https://doi.org/20.500.11850/458633 https://doi.org/10.3929/ethz-b-000458633 https://doi.org/10.7566/jpscp.30.011039 2022-04-25T14:19:51Z Eutectic Sr2RuO4-Ru samples show an onset of inhomogeneous superconductivity at around 3 K, which is above the bulk transition of Sr2RuO4 (SRO) with Tc≈1.5 K. This superconducting state nucleates most likely as a filamentary state at the interface between SRO and Ru-inclusions. Assuming that the superconducting phase of SRO has chiral symmetry, the evolution towards the bulk phase involves an additional symmetry breaking transition. Phenomenological theories based on a two-component order parameter (ηx, ηy) suggest that first a time reversal symmetry conserving order parameter nucleates at the interface due to the symmetry reduction. A second transition yields a time reversal symmetry breaking phase through the appearance of a second order parameter component. In this study we show how this second transition can be influenced by external magnetic fields. For fields parallel to the basal plane of SRO the transition is suppressed. On the other hand, fields along the c-axis support the second order parameter component. This behavior is well visible in quasi-particle tunneling spectroscopy where a zero-bias peak indicates the presence of the second order parameter component. Our result reproduces experimental results on a qualitative level very well and are compatible with both chiral superconducting phases, px±ipy-wave (spin triplet) and dxz±idyz-wave (spin singlet) pairing. Conference Object IPY ETH Zürich Research Collection |
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Open Polar |
collection |
ETH Zürich Research Collection |
op_collection_id |
ftethz |
language |
English |
topic |
Chiral superconductivity Sr2RuO4 3K-phase Ginzburg-Landau theory |
spellingShingle |
Chiral superconductivity Sr2RuO4 3K-phase Ginzburg-Landau theory Kaneyasu, Hirono Enokida, Yuya Nomura, Takuji Hasegawa, Yasumasa Sakai, Toru Sigrist, Manfred Features of Chirality Generated by Paramagnetic Coupling to Magnetic Fields in the 3 K-Phase of Sr2RuO4 |
topic_facet |
Chiral superconductivity Sr2RuO4 3K-phase Ginzburg-Landau theory |
description |
Eutectic Sr2RuO4-Ru samples show an onset of inhomogeneous superconductivity at around 3 K, which is above the bulk transition of Sr2RuO4 (SRO) with Tc≈1.5 K. This superconducting state nucleates most likely as a filamentary state at the interface between SRO and Ru-inclusions. Assuming that the superconducting phase of SRO has chiral symmetry, the evolution towards the bulk phase involves an additional symmetry breaking transition. Phenomenological theories based on a two-component order parameter (ηx, ηy) suggest that first a time reversal symmetry conserving order parameter nucleates at the interface due to the symmetry reduction. A second transition yields a time reversal symmetry breaking phase through the appearance of a second order parameter component. In this study we show how this second transition can be influenced by external magnetic fields. For fields parallel to the basal plane of SRO the transition is suppressed. On the other hand, fields along the c-axis support the second order parameter component. This behavior is well visible in quasi-particle tunneling spectroscopy where a zero-bias peak indicates the presence of the second order parameter component. Our result reproduces experimental results on a qualitative level very well and are compatible with both chiral superconducting phases, px±ipy-wave (spin triplet) and dxz±idyz-wave (spin singlet) pairing. |
format |
Conference Object |
author |
Kaneyasu, Hirono Enokida, Yuya Nomura, Takuji Hasegawa, Yasumasa Sakai, Toru Sigrist, Manfred |
author_facet |
Kaneyasu, Hirono Enokida, Yuya Nomura, Takuji Hasegawa, Yasumasa Sakai, Toru Sigrist, Manfred |
author_sort |
Kaneyasu, Hirono |
title |
Features of Chirality Generated by Paramagnetic Coupling to Magnetic Fields in the 3 K-Phase of Sr2RuO4 |
title_short |
Features of Chirality Generated by Paramagnetic Coupling to Magnetic Fields in the 3 K-Phase of Sr2RuO4 |
title_full |
Features of Chirality Generated by Paramagnetic Coupling to Magnetic Fields in the 3 K-Phase of Sr2RuO4 |
title_fullStr |
Features of Chirality Generated by Paramagnetic Coupling to Magnetic Fields in the 3 K-Phase of Sr2RuO4 |
title_full_unstemmed |
Features of Chirality Generated by Paramagnetic Coupling to Magnetic Fields in the 3 K-Phase of Sr2RuO4 |
title_sort |
features of chirality generated by paramagnetic coupling to magnetic fields in the 3 k-phase of sr2ruo4 |
publisher |
Physical Society of Japan |
publishDate |
2020 |
url |
https://hdl.handle.net/20.500.11850/458633 https://doi.org/10.3929/ethz-b-000458633 |
genre |
IPY |
genre_facet |
IPY |
op_source |
JPS Conference Proceedings, 30 Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES 2019) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.7566/jpscp.30.011039 info:eu-repo/semantics/altIdentifier/isbn/978-4-89027-142-9 info:eu-repo/grantAgreement/SNF/Projekte MINT/163186 info:eu-repo/grantAgreement/SNF/Projekte MINT/184739 http://hdl.handle.net/20.500.11850/458633 doi:10.3929/ethz-b-000458633 urn:isbn:978-4-89027-142-9 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/20.500.11850/458633 https://doi.org/10.3929/ethz-b-000458633 https://doi.org/10.7566/jpscp.30.011039 |
_version_ |
1766046905265029120 |