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We study theoretically spontaneous currents and magnetic field induced in a superconductor-ferromagnet (S-F) bilayer due to direct and inverse proximity effects. The induced currents {are Meissner currents that appear even in the absence of…

超导电性 · 物理学 2019-04-17 A. F. Volkov , F. S. Bergeret , K. B. Efetov

The magnetization in a superconductor induced due to the inverse proximity effect is investigated in hybrid bilayers containing a superconductor and a ferromagnetic insulator or a strongly spin-polarized ferromagnetic metal. The study is…

超导电性 · 物理学 2021-02-03 Vladimir Yagovtsev , Natalia Pugach , Matthias Eschrig

Spin pumping refers to the microwave-driven spin current injection from a ferromagnet into the adjacent target material. We theoretically investigate the spin pumping into superconductors by fully taking account of impurity spin-orbit…

材料科学 · 物理学 2017-07-19 Masashi Inoue , Masanori Ichioka , Hiroto Adachi

The ferromagnetic resonance of thin sputtered Ni80Fe20 films grown on Nb is measured. By varying the temperature and thickness of the Nb the role of the superconductivity on the whole ferromagnetic layer in these heterostructures is…

超导电性 · 物理学 2009-11-13 C. Bell , S. Milikisyants , M. Huber , J. Aarts

Measurements of the polar Kerr effect using a zero-area-loop Sagnac magnetometer on Pb/Ni and Al/(Co-Pd) proximity-effect bilayers show unambiguous evidence for the "inverse proximity effect," in which the ferromagnet (F) induces a finite…

超导电性 · 物理学 2009-11-13 Jing Xia , V. Shelukhin , M. Karpovski , A. Kapitulnik , A. Palevski

We discuss the Josephson effect in strongly spin-polarized ferromagnets where triplet correlations are induced by means of spin-active interface scattering, extending our earlier work [Phys. Rev. Lett. 102, 227005 (2009)] by including…

超导电性 · 物理学 2015-09-09 Roland Grein , Tomas Lofwander , Matthias Eschrig

We study peculiarities of proximity effect in clean superconductor -- ferromagnet structures caused by either spatial or momentum dependence of the exchange field. Even a small modulation of the exchange field along the quasiparticle…

超导电性 · 物理学 2015-06-11 A. S. Mel'nikov , A. V. Samokhvalov , S. M. Kuznetsova , A. I. Buzdin

Superconductor/ferromagnet (S/F) proximity effect theory predicts that the superconducting critical temperature of the F1/F2/S or F1/S/F2 trilayers for the parallel orientation of the F1 and F2 magnetizations is smaller than for the…

We study theoretically the influence of spin accumulation on superconductivity in a superconductor/ferromagnet bilayer. It is well-known that the superconductivity in S/F bilayers is suppressed by the proximity to a ferromagnet. The spin…

超导电性 · 物理学 2016-11-08 I. V. Bobkova , A. M. Bobkov

The proximity effect, quasiparticle transport, and local magnetic moment in ferromagnet--d-wave superconductor junctions with {110}-oriented interface are studied by solving self-consistently the Bogoliubov-de Gennes equations within an…

超导电性 · 物理学 2009-10-31 Jian-Xin Zhu , C. S. Ting

We calculate the contribution of superconducting fluctuations to the mesoscopic persistent current of an ensemble of rings, each made of a superconducting layer in contact with a normal one, in the Cooper limit. The superconducting…

超导电性 · 物理学 2015-05-30 O. Entin-Wohlman , H. Bary-Soroker , A. Aharony , Y. Imry , J. G. E. Harris

We investigate the injection of quasiparticle spin currents into a superconductor via spin pumping from an adjacent FM layer.$\;$To this end, we use NbN/\ch{Ni80Fe20}(Py)-heterostructures with a Pt spin sink layer and excite ferromagnetic…

We show that spin-orbit coupling at the interface between a superconducting film of the finite lateral size and the underlying ferromagnetic insulator with in-plane exchange field gives rise to a series of non-reciprocal effects provided…

超导电性 · 物理学 2023-12-21 A. V. Putilov , S. V. Mironov , A. I. Buzdin

Motivated by the recent experiment in multilayered cuprate superconductors reporting the enhancement of antiferromagnetic order below the superconducting transition temperature, we study the proximity effect of the antiferromagnetic…

强关联电子 · 物理学 2012-05-24 Hiroyuki Yoshizumi , Takao Morinari , Takami Tohyama

Superconductor$-$ferromagnetic-insulator heterostructures are paradigmatic systems for studying the mutual influence of superconductivity and magnetism via proximity effects. In particular, spin-split superconductivity is realized in such…

超导电性 · 物理学 2023-12-12 A. S. Ianovskaia , A. M. Bobkov , I. V. Bobkova

The description of the proximity effect in superconducting/ferromagnetic heterostructures requires to use spin-dependent boundary conditions. Such boundary conditions must take into account the spin dependence of the phase shifts acquired…

超导电性 · 物理学 2009-11-13 Audrey Cottet

In the systems ferromagnet/superconductor ([Fe, Ni]/In), the temperature dependent transport has been investigated within the temperature range including superconducting transition temperature for Indium. It has been found that when Indium…

超导电性 · 物理学 2007-05-23 Yu. N. Chiang , O. G. Shevchenko , R. N. Kolenov

We study theoretically spin pumping in bilayers consisting of superconductors and antiferromagnetic insulators. We consider both compensated and uncompensated interfaces and include both the regular scattering channel and the Umklapp…

超导电性 · 物理学 2021-04-14 Eirik Holm Fyhn , Jacob Linder

Proximity-induced long-range spin-triplet supercurrents, important for the field of superconducting spintronics, are generated in superconducting/ferromagnetic heterostructures when interfacial magnetic inhomogeneities responsible for spin…

We analyze the enhancement of the superconducting critical temperature of superconducting/ferromagnetic bilayers due to the appearance of localized superconducting states in the vicinity of magnetic domain walls in the ferromagnet. We…

超导电性 · 物理学 2015-03-31 M. Houzet , A. I. Buzdin
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