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Magnetism

New Research on Orbital Magnetism and Loop Currents Sheds Light on Superconductivity

Strategic Insights

— 1 min read

Researchers from the Karlsruhe Institute of Technology (KIT) have published a study investigating the relationship between orbital magnetism and loop currents in various systems, including cuprates, iridates, and kagome superconductors. According to the study, fluctuating intra-unit-cell loop currents can cause unconventional superconductivity, but their role in cuprates is unlikely to yield d x 2 - y 2 -wave superconductivity.

Key Takeaways:

  • The study proposes that orbital magnetism and loop currents can emerge in various systems, including cuprates, iridates, and kagome superconductors.
  • Fluctuating intra-unit-cell loop currents can cause unconventional superconductivity, but their role in cuprates is unlikely to yield d x 2 - y 2 -wave superconductivity.
  • The research concludes that if loop currents are to be relevant for the cuprates, they must break translation symmetry.
  • The study uses a formalism to investigate the relationship between fluctuating loop currents and unconventional pairing.
  • The authors, Grgur Palle, Risto Ojajarvi, Rafael M. Fernandes, and Jorg Schmalian, belong to the Institute for Theoretical Condensed Matter Physics at the Karlsruhe Institute of Technology (KIT).

Statistics:

  • The study was published in Science Advances, a journal published by the American Association for the Advancement of Science (AAAS).
  • The research is available online at https://doi-org.sdpl.idm.oclc.org/10.1126/sciadv.adn3662.
  • The authors have ORCID identifiers: Grgur Palle (orcid.org/0000-0001-8361-4822), Risto Ojajarvi (orcid.org/0000-0001-9665-6503), Rafael M. Fernandes (orcid.org/0000-0002-3584-5180), Jorg Schmalian (orcid.org/0000-0003-4142-2448).

Sources:

  • "Superconductivity due to fluctuating loop currents", Science Advances, 2024, 10(24). (Science Advances - http://www.scienceadvances.org/)
  • American Association for the Advancement of Science (AAAS)
  • ORCID: Grgur Palle, Risto Ojajarvi, Rafael M. Fernandes, Jorg Schmalian

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