Critical temperature T_c and Pauli limited critical field of Sr₂RuO₄: Uniaxial strain dependence

Journal Article · 19 July 2020 · Physical Review B

DOI: https://doi.org/10.1103/physrevb.102.014509 · OSTI ID:1656589

Yu, Yue ^[1]; Brown, Stuart ^[2]; Raghu, S. ^[3]; Yang, Kun ^[4]

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1. Stanford Univ., CA (United States)
2. Univ. of California, Los Angeles, CA (United States)
3. Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
4. Florida State Univ., Tallahassee, FL (United States)

Variations of critical temperature $T_c$ and in-plane critical field $H_{c2}$ of ${\text{Sr}}_2\text{Ru}{\text{O}}_4$ under uniaxial stress were recently reported. We compare the strain dependence of $T_c$ and $H_{c2}$ in various pairing channels ( $d$ wave, extended $s$ wave, and $p$ -wave) with the experimental observations by studying a three-band tight-binding model that includes effects of spin-orbit and Zeeman couplings and a separable pairing interaction. Our study helps narrow down the possibility of pairing channels. The importance of the multiband nature of ${\text{Sr}}_2\text{Ru}{\text{O}}_4$ is also highlighted.

• Research Organization: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
• Sponsoring Organization: National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
• Grant/Contract Number: AC02-76SF00515
• OSTI ID: 1656589
• Journal Information: Physical Review B, Journal Name: Physical Review B Journal Issue: 1 Vol. 102; ISSN 2469-9950
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English