Odd triplet superconductivity and related phenomena in superconductor-ferromagnet structures

By F. Bergeret, A. Volkov, K. Efetov. 2005

1,054 citations recorded by the source corpus.

This review considers unusual effects in superconductor-ferromagnet structures, in particular, the triplet component of the condensate generated in those systems. This component is odd in frequency and even in momentum, which makes it insensitive to nonmagnetic impurities. If the exchange field is not homogeneous in the system, the triplet component is not destroyed even by a strong exchange field and can penetrate the ferromagnet over long distances. Some other effects considered here and caused by the proximity effect are enhancement of the Josephson current due to the presence of the ferromagnet, induction of a magnetic moment in superconductors resulting in a screening of the magnetic moment, and formation of periodic magnetic structures due to the influence of the superconductor. Finally, theoretical predictions are compared with existing experiments.

Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics

View Paper: https://www.semanticscholar.org/paper/4cb647daba2961b1a7bfc3219b653b25c953f689

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In Atomic and Molecular Physics, and Optics

In Condensed Matter Physics

Citations in the corpus

Focused electron beam induced deposition meets materials science (2017, background): “However, under some circumstances the presence of ferromagnetism may lead to triplet superconducting pairing [96, 78, 97, 98].”
Granular electronic systems (2006, background): “The direction of this magnetic moment is opposite to that of the ferromagnet and one comes to a phenomenon of the “spin screening” (Bergeret et al., 2004, 2005).”
General Theory of Josephson Diodes (2021, background): “It is widely known that magnetism disfavors spin-singlet pairing and the effect of the magnetism on the transport properties of the JJ was studied in detail before [62].”
Topological superconductivity in two-dimensional altermagnetic metals (2023, background): “Magnetism can influence superconductivity in many ways, and its effect on the pairing symmetry is of particular interest 13,14 .”
Colloquium : Nonequilibrium effects in superconductors with a spin-splitting field (2017, background): “On the other hand, the terms proportional to the Pauli matrices σj , j = 1, 2, 3, describe the three triplet components of the condensate that appear in the presence of spin-dependent fields (Bergeret et al., 2001b, 2005).”
Odd-frequency superconductivity (2017, background): “The physics of odd-ω pairing in SF structures was reviewed twelve years ago (Bergeret et al., 2005), but since then experimental progress in this field has been substantial.”
Superconducting spintronics (2015, background): “[20, 21]) that triplet pairs that carry spin in addition to charge could also form by introducing magnetic inhomogeneities at the superconductor-ferromagnet interface.”
Exchange Bias Effect of Ferro-/Antiferromagnetic Heterostructures (2007, neutral): “Recent reviews on these topics can be found in Refs: (8; 19; 20) and also in this book.”