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Local spectroscopic evidence for a nodeless magnetic kagome superconductor CeRu2.
Mielke Iii, C; Liu, H; Das, D; Yin, J-X; Deng, L Z; Spring, J; Gupta, R; Medarde, M; Chu, C-W; Khasanov, R; Hasan, Z M; Shi, Y; Luetkens, H; Guguchia, Z.
Affiliation
  • Mielke Iii C; Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland.
  • Liu H; Physik-Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland.
  • Das D; Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
  • Yin JX; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.
  • Deng LZ; Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland.
  • Spring J; Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ 08544, United States of America.
  • Gupta R; Department of Physics and Texas Center for Superconductivity, University of Houston, Houston, TX, United States of America.
  • Medarde M; Physik-Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland.
  • Chu CW; Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland.
  • Khasanov R; Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland.
  • Hasan ZM; Department of Physics and Texas Center for Superconductivity, University of Houston, Houston, TX, United States of America.
  • Shi Y; Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States of America.
  • Luetkens H; Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland.
  • Guguchia Z; Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ 08544, United States of America.
J Phys Condens Matter ; 34(48)2022 Oct 18.
Article in En | MEDLINE | ID: mdl-36202080
ABSTRACT
We report muon spin rotation (µSR) experiments on the microscopic properties of superconductivity and magnetism in the kagome superconductor CeRu2withTc≃5 K. From the measurements of the temperature-dependent magnetic penetration depthλ, the superconducting order parameter exhibits nodeless pairing, which fits best to an anisotropics-wave gap symmetry. We further show that theTc/λ-2ratio is comparable to that of unconventional superconductors. Furthermore, the powerful combination of zero-field (ZF)-µSR and high-fieldµSR has been used to uncover magnetic responses across three characteristic temperatures, identified asT1∗≃110 K,T2∗≃65 K, andT3∗≃40 K. Our experiments classify CeRu2as an exceedingly rare nodeless magnetic kagome superconductor.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Type of study: Prognostic_studies Language: En Journal: J Phys Condens Matter Journal subject: BIOFISICA Year: 2022 Document type: Article Affiliation country: Switzerland
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Full text: 1 Collection: 01-internacional Database: MEDLINE Type of study: Prognostic_studies Language: En Journal: J Phys Condens Matter Journal subject: BIOFISICA Year: 2022 Document type: Article Affiliation country: Switzerland