Rashba spin-splitting of single electrons and Cooper pairs

• Published in: Физика низких температур
• Date: 2017
• Main Authors: Shekhter, R.I., Entin-Wohlman, O., Jonson, M., Aharony, A.
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2017
• Subjects: К 100-летию со дня рождения И.М. Лифшица
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/129382
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Rashba spin-splitting of single electrons and Cooper pairs / R.I. Shekhter, O. Entin-Wohlman, M. Jonson, A. Aharony // Физика низких температур. — 2017. — Т. 43, № 2. — С. 368-386. — Бібліогр.: 48 назв. — англ.

Electric weak links, the term used for those parts of an electrical circuit that provide most of the resistance against the flow of an electrical current, are important elements of many nanodevices. Quantum dots, nanowires and nano-constrictions that bridge two bulk conductors (or superconductors) are examples of such weak links. Here we consider nanostructures where the electronic spin-orbit interaction is strong in the weak link but is un-important in the bulk conductors, and explore theoretically the role of the spin-orbit active weak link (which we call a “Rashba spin splitter”) as a source of new spin-based functionality in both normal and superconducting devices. Some recently predicted phenomena, including mechanically-controlled spin- and charge currents as well as the effect of spin polarization of superconducting Cooper pairs, are reviewed.