High-sensitivity heat-capacity measurements on Sr₂RuO₄ under uniaxial pressure

• Published in: Proceedings of the National Academy of Sciences - PNAS Vol. 118; no. 10; pp. 1 - 6
• Main Authors: Li, You-Sheng, Kikugawa, Naoki, Sokolov, Dmitry A., Jerzembeck, Fabian, Gibbs, Alexandra S., Maeno, Yoshiteru, Hicks, Clifford W., Schmalian, Jörg, Nicklas, Michael, Mackenzie, Andrew P.
• Format: Journal Article
• Language: English
• Published: Washington National Academy of Sciences 09.03.2021
• Subjects: Brillouin zones; Heat; Order parameters; Physical Sciences; Pressure; Specific heat; Strontium ruthenium oxide; Unconventional superconductivity
• ISSN: 0027-8424; 1091-6490; 1091-6490
• DOI: 10.1073/pnas.2020492118

A key question regarding the unconventional superconductivity of Sr₂RuO₄ remains whether the order parameter is single- or two-component. Under a hypothesis of two-component superconductivity, uniaxial pressure is expected to lift their degeneracy, resulting in a split transition. The most direct an...