Amazing stuff!
Google search: "Triplet superconductivity is an exotic, rarely observed state of matter where electrons pair up with parallel spins (spin triplet S=1), in contrast to conventional "singlet" superconductors (spin S=0) where spins are antiparallel."
"... "Triplet superconductors make a number of unusual physical phenomena possible. These phenomena have important applications in quantum technology and spintronics," said Linder.
More detailed information about these applications:
The reason triplet superconductors can transfer spin without energy loss is that the superconducting particles now carry spin with them.
Triplet superconductors can also be used to create a very exotic type of particle called a "Majorana particle."
A Majorana particle is its own antiparticle. Therefore, it can perform calculations in a quantum computer in a stable way. ...
Conventional superconductors are so-called "singlet superconductors." In simple terms, this means that the superconducting particles do not have spin.
In triplet superconductors, however, the superconducting particles have spin. ...
"The fact that triplet superconductors have spin has an important consequence. We can now transport not only electrical currents but also spin currents with absolutely zero resistance," ...."
From the abstract:
"NbRe is a noncentrosymmetric superconductor that has been proposed as a candidate for intrinsic spin-triplet pairing. However, a conclusive demonstration of triplet pairing in NbRe is yet to be found. To probe the presence of spin-triplet Cooper pairs, we fabricated Py/NbRe/Py trilayers capped with an antiferromagnetic layer.
Magnetic and electrical measurements reveal an inverse spin-valve effect, which could indicate equal-spin-triplet superconductivity. The minimal sample structure and the lack of ad hoc engineered interfaces clearly associate our observation to intrinsic triplet correlations of NbRe. The availability of NbRe in thin-film form and the simplicity of the heterostructure highlight its potential as a scalable platform for superconducting spintronics."
Unveiling Intrinsic Triplet Superconductivity in Noncentrosymmetric NbRe through Inverse Spin-Valve Effects (no public access)
Unveiling Intrinsic Triplet Superconductivity in Noncentrosymmetric NbRe through Inverse Spin-Valve Effects (preprint, open access)
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