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Employing a quantum Monte Carlo simulation we find a pairing instability in the normal state of the infinite dimensional periodic Anderson model. Superconductivity arises from a normal state in which the screening is protracted and which is…

Strongly Correlated Electrons · Physics 2017-08-23 A. N. Tahvildar-Zadeh , M. H. Hettler , M. Jarrell

We report the emergence of highly nonlinear spin and charge pumping in an altermagnetic system driven by magnetic dynamics. The non-relativistic spin-momentum coupling inherent to altermagnets (AMs) generates a giant momentum dependent spin…

Mesoscale and Nanoscale Physics · Physics 2026-04-21 Ousmane Ly

Spin pumping is a microwave-driven means for injecting spins from a ferromagnet into the adjacent target material. The insertion of a thin antiferromagnetic layer between the ferromagnet and the target material is known to enhance the spin…

Mesoscale and Nanoscale Physics · Physics 2025-12-02 Yuto Furutani , Hayato Fukushima , Yutaka Yamamoto , Masanori Ichioka , Hiroto Adachi

We study the point-contact tunneling between normal metal and ferromagnetic superconductor. In the case of magnon-induced pairing the tunneling conductance is continuous and smooth function of the applied voltage. For small values of the…

Superconductivity · Physics 2009-11-10 Naoum Karchev , Tzanko Ivanov

We theoretically study the spin-dependent transport in a ferromagnet/super- conductor/ferromagnet double tunnel junction. The tunneling current in the antiferromagnetic alignment of the magnetizations gives rise to a spin imbalance in the…

Condensed Matter · Physics 2009-10-31 S. Takahashi , H. Imamura , S. Maekawa

On the basis of microscopic theory it is demonstrated how the coupling between the electrons by means of magnetization fluctuations in ferromagnetic metal with orthorhombic symmetry gives rise equal spin pairing superconducting state with…

Superconductivity · Physics 2015-06-22 V. P. Mineev

We consider superconductivity nucleation in multiply connected mesoscopic samples such as thin-walled cylinders or rings placed in electrical contact with a ferromagnet. The superconducting critical temperature and order parameter structure…

Superconductivity · Physics 2009-11-29 A. V. Samokhvalov , A. S. Mel'nikov , A. I. Buzdin

We show that the spin pumping from ferromagnetic insulator into the adjacent metallic spin sink can be strongly stimulated by the superconducting correlations. The key physical mechanism responsible for this effect is the presence of…

Superconductivity · Physics 2020-11-18 M. A. Silaev

We analyze theoretically adiabatic quantum pumping through a normal conductor that couples the normal regions of two superconductor/normal metal/superconductor Josephson junctions. By using the phases of the superconducting order parameter…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 S. Russo , J. Tobiska , T. M. Klapwijk , A. F. Morpurgo

A combination of novel technological and fundamental physics prospects has sparked a huge interest in pure spin transport in magnets, starting with ferromagnets and spreading to antiferro- and ferrimagnets. We present a theoretical study of…

Mesoscale and Nanoscale Physics · Physics 2017-11-08 Akashdeep Kamra , Wolfgang Belzig

We propose a novel mechanism for the coexistence of metallic ferromagnetism and singlet superconductivity assuming that the magnetic instability is due to kinetic exchange. Within this scenario, the unpaired electrons which contribute to…

Superconductivity · Physics 2009-11-10 Mario Cuoco , Paola Gentile , Canio Noce

We consider charge transport properties in realistic, fabricable, Ferromagnet/Superconductor spin valves having a layered structure $F_1/N/F_2/S$, where $F_1$ and $F_2$ denote the ferromagnets, $S$ the superconductor, and $N$ the normal…

Superconductivity · Physics 2017-02-15 Evan Moen , Oriol T. Valls

The study of improper phases in the context of multiferroic materials has a long history, but superconductivity has yet to be connected to the network of ferroic orders. In this work, we highlight an overlooked mechanism that couples…

Superconductivity · Physics 2023-09-12 Andras Szabo , Aline Ramires

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…

Superconductivity · Physics 2009-11-13 C. Bell , S. Milikisyants , M. Huber , J. Aarts

In this Letter, we consider the adiabatic charge transport through a normal mesoscopic sample sandwiched by superconductors without modulation of local chemical potentials. The deformation of coherent quasiparticles in the normal metal in…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Fei Zhou

We employ a systematic approach to construct superconducting order parameters based on the spin space group. Compared to magnetic space groups where spatial and spin rotation of elements are completely locked, the superconducting channels…

Mesoscale and Nanoscale Physics · Physics 2025-02-21 Xilin Feng , Zhongyi Zhang

The ac spin pumping of noncollinear antiferromagnets is theoretically investigated. Starting from an effective action description of the spin system, we derive the Onsager coefficients connecting the spin pumping and spin-transfer torque…

Mesoscale and Nanoscale Physics · Physics 2021-11-23 Mike A. Lund , Akshaykumar Salimath , Kjetil M. D. Hals

The exchange interaction at interfaces between superconductors (SCs) and ferromagnets (FMs) has been a central topic in condensed matter physics for many decades, starting with the prediction of exotic phases such as the…

Superconductivity · Physics 2025-12-09 Tao Yu , Xi-Han Zhou , Gerrit E. W. Bauer , Irina Bobkova

We study adiabatic pumping at a normal metal/class-D superconductor hybrid interface when superconductivity is induced through the proximity effect in a spin-orbit coupled nanowire in the presence of a tilted Zeeman field. When the induced…

Superconductivity · Physics 2013-10-29 Marco Gibertini , Rosario Fazio , Marco Polini , Fabio Taddei

Charge and spin Josephson currents in a ballistic superconductor-ferromagnet-superconductor junction with spin-triplet pairing symmetry are studied using the quasiclassical Eilenberger equation. The gap vector of superconductors has an…

Superconductivity · Physics 2015-05-19 Yousef Rahnavard , Gholamreza Rashedi , Takehito Yokoyama