Physical Review B, volume 107, issue 2, publication number 024508
µ SR measurements on Sr2RuO4 under 〈110〉 uniaxial stress
V. Grinenko
1, 2
,
Rajib Sarkar
1
,
Shreenanda Ghosh
1, 3
,
D. Das
4
,
Zurab Guguchia
4
,
Hubertus Luetkens
4
,
Ilya Shipulin
5
,
Aline Ramires
6
,
Naoki Kikugawa
7
,
Yoshiteru Maeno
8, 9
,
Kenji Ishida
10
,
Clifford W. Hicks
10, 11
,
Hans-Henning Klauss
1
4
9
Publication type: Journal Article
Publication date: 2023-01-24
Journal:
Physical Review B
scimago Q1
wos Q2
SJR: 1.345
CiteScore: 6.3
Impact factor: 3.2
ISSN: 24699950, 24699969, 10980121, 1550235X
Abstract
Muon spin rotation/relaxation ($\ensuremath{\mu}\mathrm{SR}$) and polar Kerr effect measurements provide evidence for a time-reversal symmetry breaking (TRSB) superconducting state in ${\mathrm{Sr}}_{2}{\mathrm{RuO}}_{4}$. However, the absence of a cusp in the superconducting transition temperature (${T}_{\mathrm{c}}$) vs stress and the absence of a resolvable specific heat anomaly at TRSB transition temperature (${T}_{\mathrm{TRSB}}$) under uniaxial stress challenge a hypothesis of TRSB superconductivity. Recent $\ensuremath{\mu}\mathrm{SR}$ studies under pressure and with disorder indicate that the splitting between ${T}_{\mathrm{c}}$ and ${T}_{\mathrm{TRSB}}$ occurs only when the structural tetragonal symmetry is broken. To further test such behavior, we measured ${T}_{\text{c}}$ through susceptibility measurements and ${T}_{\text{TRSB}}$ through $\ensuremath{\mu}\mathrm{SR}$, under uniaxial stress applied along a $\ensuremath{\langle}110\ensuremath{\rangle}$ lattice direction. We have obtained preliminary evidence for suppression of ${T}_{\text{TRSB}}$ below ${T}_{\text{c}}$, at a rate much higher than the suppression rate of ${T}_{\text{c}}$.
Are you a researcher?
Create a profile to get free access to personal recommendations for colleagues and new articles.