Suppressed Fluctuations as the Origin of the Static Magnetic Order in Strained Sr₂RuO₄

Author(s)

Bongjae Kim, Sergii Khmelevskyi, Cesare Franchini, I. I. Mazin

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.

Organisation(s)

Computational Materials Physics

External organisation(s)

Kunsan National University, Technische Universität Wien, University of Bologna, George Mason University

Journal

Physical Review Letters

Volume

130

No. of pages

6

ISSN

0031-9007

DOI

https://doi.org/10.1103/PhysRevLett.130.026702

Publication date

01-2023

Peer reviewed

Yes

Austrian Fields of Science 2012

103017 Magnetism, 103033 Superconductivity, 103043 Computational physics

ASJC Scopus subject areas

Physics and Astronomy(all)

Portal url

https://ucris.univie.ac.at/portal/en/publications/suppressed-fluctuations-as-the-origin-of-the-static-magnetic-order-in-strained-sr2ruo4(a2f4c537-c679-4e95-8748-fb0de1abf7c6).html