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29 March 2024 |
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Article overview
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Superconducting spin valves controlled by spiral re-orientation in MnSi | N. G. Pugach
; M. Safonchik
; T. Champel
; M. E. Zhitomirsky
; E. Lähderanta
; M. Eschrig
; C. Lacroix
; | Date: |
28 Feb 2017 | Abstract: | We propose a superconducting spin-triplet valve of a new type. This spin
valve consists of a bilayer that involves a superconductor and an itinerant
magnetic material, with the magnet showing an intrinsic non-collinear magnetic
order characterized by a wave vector ${f Q}$ that may be aligned in a few
equivalent preferred directions under control of a weak external magnetic
field. Re-orienting the direction of ${f Q}$ allows one to controllably
modify long-range spin-triplet superconducting correlations in the magnetic
material, leading to spin-valve switching behavior. This new type of
superconducting spin valve may be used as a magnetic memory element for
cryogenic nanoelectronics. It has the following advantages in comparison with
superconducting spin valves proposed earlier: (i) it contains only one magnetic
layer, which may be more easily fabricated and controlled; (ii) its ground
states are separated by a potential barrier, which solves the "half-select"
problem of the addressed switch of such memory elements. | Source: | arXiv, 1702.8828 | Services: | Forum | Review | PDF | Favorites |
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