Collective Order Parameter Modes and Spin Fluctuations for Spin-Triplet Superconducting State inSr2RuO4

1999 ◽  
Vol 83 (5) ◽  
pp. 1007-1009 ◽  
Author(s):  
L. Tewordt
Keyword(s):  
Superconducting State ◽  
Order Parameter ◽  
Spin Fluctuations ◽  
Spin Triplet

scholarly journals Multicomponent superconducting order parameter in UTe2

Science ◽  
2021 ◽  
pp. eabb0272
Author(s):  
I. M. Hayes ◽  
D. S. Wei ◽  
T. Metz ◽  
J. Zhang ◽  
Y. S. Eo ◽  
...  
Keyword(s):  
Superconducting State ◽  
Kerr Effect ◽  
Order Parameter ◽  
Heavy Fermion ◽  
Magnetic Fluctuations ◽  
And Topology ◽  
Spin Triplet ◽  
Polar Kerr Effect ◽  
Component Order ◽  
Component Order Parameter

An unconventional superconducting state was recently discovered in UTe2, where spin-triplet superconductivity emerges from the paramagnetic normal state of a heavy fermion material. The coexistence of magnetic fluctuations and superconductivity, together with the crystal structure of this material, suggest that a unique set of symmetries, magnetic properties, and topology underlie the superconducting state. Here, we report observations of a non-zero polar Kerr effect and of two transitions in the specific heat upon entering the superconducting state, which together suggest that the superconductivity in UTe2 is characterized by a two-component order parameter that breaks time reversal symmetry. These data place constraints on the symmetries of the order parameter and inform the discussion on the presence of topological superconductivity in UTe2.

scholarly journals Evidence for Spin-Triplet Electron Pairing in the Proximity-Induced Superconducting State of an Fe-Doped InAs Semiconductor

2019 ◽  
Vol 122 (10) ◽  
Author(s):  
Taketomo Nakamura ◽  
Le Duc Anh ◽  
Yoshiaki Hashimoto ◽  
Shinobu Ohya ◽  
Masaaki Tanaka ◽  
...  
Keyword(s):  
Superconducting State ◽  
Electron Pairing ◽  
Spin Triplet

Magnetic Properties and Spin Kinetics of Two-Dimensional Heisenberg Antiferromagnets

2003 ◽  
Vol 17 (10n12) ◽  
pp. 487-490
Author(s):  
S. I. Belov ◽  
B. I. Kochelaev
Keyword(s):  
Order Parameter ◽  
Spin Fluctuations ◽  
Local Order ◽  
Nuclear Relaxation ◽  
Two Dimensional ◽  
Nuclear Spins ◽  
Static Magnetic Susceptibility ◽  
Spin Excitations ◽  
Local Order Parameter ◽  
Kinetics Of

In this report we present our study of two-dimensional Heisenberg magnets based on the picture of thermally excited skyrmions. The local order parameter, energy spectrum of elementary spin excitations above the skyrmion background, the skyrmion averaged radius and static magnetic susceptibility were obtained by the Green functions method. There was calculated the rate of nuclear relaxation caused by the interaction of nuclear spins with above mentioned spin excitations. The contribution of Moriya–Dsyloshinskii and anisotropic symmetric interactions into EPR line was considered. A comparison with NMR and neutron scattering experiments in cuprates and with the results obtained by other methods is given. We discuss the consequences of an interaction between skyrmions as the result of the spin fluctuations.

scholarly journals Incommensurate Spin Fluctuations in the Spin-Triplet Superconductor Candidate UTe2

2020 ◽  
Vol 125 (23) ◽  
Author(s):  
Chunruo Duan ◽  
Kalyan Sasmal ◽  
M. Brian Maple ◽  
Andrey Podlesnyak ◽  
Jian-Xin Zhu ◽  
...  
Keyword(s):  
Spin Fluctuations ◽  
Spin Triplet

scholarly journals Vortex lattice in rotating neutron spin-triplet superfluid

2020 ◽  
Vol 498 (1) ◽  
pp. 304-309
Author(s):  
Lev B Leinson
Keyword(s):  
Neutron Stars ◽  
Electron Scattering ◽  
Order Parameter ◽  
Vortex Lattice ◽  
Neutron Spin ◽  
Ginzburg Landau ◽  
Flux Tubes ◽  
The Core ◽  
Upper Limit ◽  
Spin Triplet

ABSTRACT In the Ginzburg–Landau limit, a possible texture without singular cores in a rotating neutron spin-triplet superfluid is studied. The lattice of non-singular vortices is constructed with a vorticity diffusely distributed over the entire unit cell. The upper limit of the free energy associated with this structure is estimated, and the result shows that non-singular vortices are more preferable in the core of rotating neutron stars than ordinary linear singular vortices. The order parameter of the studied neutron system belongs to the unitary class. This implies that the superfluid under consideration does not have spin polarization and the core-less 3P2 vortices do not have magnetization, which makes electron scattering by vortices ineffective. For the same reason, pinning with flux tubes is also suppressed. This can affect the hydrodynamics of superfluid neutron stars.

Theory of magnetic properties in the spin-triplet superconducting state of Sr2RuO4

2008 ◽  
Vol 69 (12) ◽  
pp. 3352-3355 ◽  
Author(s):  
Takuji Nomura ◽  
Hiroaki Ikeda ◽  
Dai S. Hirashima
Keyword(s):  
Magnetic Properties ◽  
Superconducting State ◽  
Spin Triplet
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