Non-Fermi surface nesting driven commensurate magnetic ordering in Fe-doped $\mathrm{S}{\mathrm{r}}_2\mathrm{Ru}{\mathrm{O}}_4$

Journal Article · 09 February 2017 · Physical Review B

DOI: https://doi.org/10.1103/PhysRevB.95.054413 · OSTI ID:1351616

Zhu, M.; Shanavas, K. V.; Wang, Y.; Zou, T.; Ortmann, J. E.; Tian, W; Garlea, V. O.; Podlesnyak, A.; Matsuda, M.; Keavney, D.; Mao, Z. Q.; Singh, D. J.; Ke, X.

Sr₂RuO₄, an unconventional superconductor, is known to possess an incommensurate spin-density wave instability driven by Fermi surface nesting. Here we report a static spin-density wave ordering with a commensurate propagation vector q_c = (0.250.250) in Fe-doped Sr₂RuO₄, despite the magnetic fluctuations persisting at the incommensurate wave vectors q_ic = (0.30.3L) as in the parent compound. The latter feature is corroborated by the first-principles calculations, which show that Fe substitution barely changes the nesting vector of the Fermi surface. Finally, these results suggest that in addition to the known incommensurate magnetic instability, Sr₂RuO₄ is also in proximity to a commensurate magnetic tendency that can be stabilized via Fe doping.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: Experimental Program to Stimulate Competitive Research (EPSCoR); Michigan State University; Scientific User Facilities Division; USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• Grant/Contract Number: AC02-06CH11357; SC0012432
• OSTI ID: 1351616
• Journal Information: Physical Review B, Journal Name: Physical Review B Journal Issue: 5 Vol. 95; ISSN 2469-9950; ISSN PRBMDO
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English