Kim, B., Khmelevskyi, S., Franchini, C., & Mazin, I. I. (2023). Suppressed Fluctuations as the Origin of the Static Magnetic Order in Strained Sr₂RuO₄. Physical Review Letters, 130(2), Article 026702. https://doi.org/10.1103/PhysRevLett.130.026702
E057-09 - Fachbereich VSC Research Center E134 - Institut für Angewandte Physik
-
Journal:
Physical Review Letters
-
ISSN:
0031-9007
-
Date (published):
13-Jan-2023
-
Number of Pages:
6
-
Publisher:
AMER PHYSICAL SOC
-
Peer reviewed:
Yes
-
Keywords:
Spin fluctuations; Magnetism; Sr2RuO4
en
Abstract:
Combining first-principles density-functional calculations and Moriya's self-consistent renormalization theory, we explain the recently reported counterintuitive appearance of an ordered magnetic state in uniaxially strained Sr₂RuO₄ beyond the Lifshitz transition. We show that strain weakens the quantum spin fluctuations, which destroy the static order, more strongly than the tendency to magnetism. A different rate of decrease of the spin fluctuations vs magnetic stabilization energy promotes the onset of a static magnetic order beyond a critical strain.
