scholarly journals Josephson effect and a π-state in superfluid 3He

Nature ◽  
10.1038/17251 ◽  
1999 ◽  
Vol 397 (6719) ◽  
pp. 485-485
Author(s):  
S. Backhaus ◽  
R. W. Simmonds ◽  
A. Loshak ◽  
J. C. Davis ◽  
R. E. Packard
Keyword(s):  
Josephson Effect ◽  
Superfluid 3He ◽  
Π State

Josephson effect and a π-state in superfluid 3He

Nature ◽  
10.1038/17244 ◽  
1999 ◽  
Vol 397 (6719) ◽  
pp. 484-485 ◽  
Author(s):  
Olivier Avenel ◽  
Yury Mukharsky ◽  
Eric Varoquaux
Keyword(s):  
Josephson Effect ◽  
Superfluid 3He ◽  
Π State

JOSEPHSON π-STATE DUE TO SPIN-ACTIVE JUNCTION INTERFACE

2007 ◽  
Vol 21 (18n19) ◽  
pp. 3395-3397
Author(s):  
YASUHIRO ASANO ◽  
YUKI SAWA ◽  
YUKIO TANAKA
Keyword(s):  
Recent Experiment ◽  
Josephson Effect ◽  
Cooper Pairs ◽  
Half Metal ◽  
Spin Flip ◽  
Π State

Motivated by a recent experiment [R. S. Keizer, et. al., Nature 439, 825 (2006)], we study the Josephson effect in superconductor/diffusive half metal/superconductor junctions. The Josephson π-state is more stable than the 0-junction when the spin-flip scattering at the junction interface opens the Josephson channel of the odd-frequency Cooper pairs.

scholarly journals A search for the AC Josephson effect in superfluid 3He

1983 ◽  
Author(s):  
O. V. Lounasmaa ◽  
M. T. Manninen ◽  
S. A. Nenonen ◽  
J. P. Pekola ◽  
R. G. Sharma ◽  
...  
Keyword(s):  
Josephson Effect ◽  
Superfluid 3He

Quasiclassical theory of the Josephson effect in 3.5. Superfluid 3He

1990 ◽  
Vol 165-166 ◽  
pp. 755-756
Author(s):  
E.V Thuneberg ◽  
J. Kurkijärvi ◽  
J.A. Sauls
Keyword(s):  
Josephson Effect ◽  
Superfluid 3He ◽  
Quasiclassical Theory

scholarly journals Magnon Tunneling Between Two Magnon Bose-Einstein Condensates

2021 ◽  
Author(s):  
A. D. Belanovsky ◽  
P. M. Vetoshko ◽  
Yu. M. Bunkov
Keyword(s):  
Josephson Effect ◽  
Bose Condensation ◽  
Superfluid 3He ◽  
Quantum Systems ◽  
Quantum Computers ◽  
Hybrid Quantum Systems ◽  
Processing Information ◽  
Iron Garnet ◽  
Bose Einstein ◽  
Iron Garnet Film

Abstract The explosive development of quantum magnonics is explained by its potential of use in quantum computers, processing information and the formation of hybrid quantum systems. The processes of spatial correlation of quantum systems are fundamental and lead to such phenomena as the Josephson effect and superconductivity. In particular, they determine the phenomenon of the magnon superfluidity and magnon Bose condensation which were first discovered in antiferromagnetic superfluid 3He. In this article, we consider the features of magnon Bose condensation in yttrium iron garnet film. We simulate the processes of magnon BEC coherency and magnon tunneling through the gap.

Anomalous Josephson current through a topological noncoplanar ferromagnetic trilayer

2022 ◽  
Author(s):  
MengYao Li ◽  
Yang Yang ◽  
Jingguo Hu ◽  
TingMin Liu ◽  
Yong Chun Tao
Keyword(s):  
Bound States ◽  
Josephson Effect ◽  
State Transitions ◽  
Exchange Field ◽  
Free Energies ◽  
Zero Energy ◽  
Spin Singlet ◽  
Π State ◽  
Josephson Supercurrent ◽  
Field Strengths

Abstract We present an anomalous Josephson effect in a TI-based Josephson junction with a ferromagnetic insulator (FI) trilayer which has noncoplanar magnetizations. It is shown that there exist equal spin-singlet and -triplet correlations due to the magnetism-tuning chiral Dirac energy band structure combined with the spin precession and selective equal spin Andreev reflection by chiral Majorana modes (CMMs). The consequent anomalous Josephson supercurrent is exhibited, in which a 0-π or similar 0 - π state transition through phase shift is induced only by exchange field strengths of the first FI region, while the ϕ0 supercurrent and the maximum one gradually drop with the increase of exchange field strengths of the second and third FI regions without relative state transitions. The much different features are found by varying the lengths of trilayer. The Andreev bound states without hybridization for the CMM administrate these features, which could be used to probe and confirm the zero energy CMM. In addition, the corresponding free energies are presented and discussed.

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