Superconducting spin valves controlled by spiral re-orientation in B20-family magnets

被引：24

作者：

Pugach, N. G. ^{[1
,2
]}

Safonchik, M. ^{[3
]}

Champel, T. ^{[4
]}

Zhitomirsky, M. E. ^{[5
]}

Lahderanta, E. ^{[6
]}

Eschrig, M. ^{[7
]}

Lacroix, C. ^{[8
]}

机构：

[1] Lomonosov Moscow State Univ, Skobeltsyn Inst Nucl Phys, Leninskie Gory 1 2, Moscow 119991, Russia

[2] Natl Res Univ, Higher Sch Econ, Moscow 101000, Russia

[3] AF Ioffe Phys Tech Inst, RU-194021 St Petersburg, Russia

[4] Univ Grenoble Alpes, CNRS, LPMMC, F-38000 Grenoble, France

[5] Univ Grenoble Alpes, CEA, INAC Pheliqs, F-38000 Grenoble, France

[6] Lappeenranta Univ Technol, POB 20, FI-53851 Lappeenranta, Finland

[7] Royal Holloway Univ London, Dept Phys, Egham TW20 0EX, Surrey, England

[8] Univ Grenoble Alpes, CNRS, Inst Neel, F-38000 Grenoble, France

来源：

APPLIED PHYSICS LETTERS | 2017年 / 111卷 / 16期

关键词：

FERROMAGNET; MNSI; SUPERCURRENTS; SPINTRONICS; ORDER;

D O I：

10.1063/1.5000315

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We propose a superconducting spin-triplet valve, which consists of a superconductor and an itinerant magnetic material, with the magnet showing an intrinsic non-collinear order characterized by a wave vector that may be aligned in a few equivalent preferred directions under the control of a weak external magnetic field. Re-orienting the spiral direction allows one to controllably modify long-range spin-triplet superconducting correlations, leading to spin-valve switching behavior. Our results indicate that the spin-valve effect may be noticeable. This bilayer may be used as a magnetic memory element for cryogenic nanoelectronics. It has the following advantages in comparison to superconducting spin valves proposed previously: (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 memory elements. Published by AIP Publishing.

引用

页数：5

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