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The electron paramagnetic resonance study for an organic superconductor $\beta''$-(BEDT-TTF)$_{4}$[(H$_3$O)Ga(C$_2$O$_4$)$_3$]$\cdot$C$_6$H$_5$NO$_2$ reveals that superconductivity coexists uniformly with the charge ordered state in one…

Superconductivity · Physics 2019-09-04 Yoshihiko Ihara , Kazuki Moribe , Suhei Fukuoka , Atsushi Kawamoto

We present results of a numerical mean field treatment of interacting spins and carriers in doped diluted magnetic semiconductors, which takes into account the positional disorder present in these alloy systems. Disorder is found to enhance…

Disordered Systems and Neural Networks · Physics 2009-10-31 Mona Berciu , R. N. Bhatt

We investigate spin dependent transport in hybrid superconductor(S)--normal-metal(N)--ferromagnet(F) structures under conditions of proximity effect. We demonstrate the feasibility of the absolute spin-valve effect for a certain interval of…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Daniel Huertas-Hernando , Yu. V. Nazarov , W. Belzig

Spin pumping is a recently established means for generating a pure spin current, whereby spins are pumped from a magnet into the adjacent target material under the ferromagnetic resonance condition. We theoretically investigate the spin…

Mesoscale and Nanoscale Physics · Physics 2020-05-14 Yusei Fujimoto , Masanori Ichioka , Hiroto Adachi

We formulate a theory of spin dependent transport of an electronic circuit involving ferromagnetic elements with non-collinear magnetizations which is based on the conservation of spin and charge current. The theory considerably simplifies…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Arne Brataas , Yu. V. Nazarov , Gerrit E. W. Bauer

The leading superconducting instabilities of the two-dimensional extended repulsive one-band Hubbard model within spin-fluctuation pairing theory depend sensitively on electron density, band and interaction parameters. We map out the phase…

Superconductivity · Physics 2023-01-02 Mercè Roig , Astrid T. Rømer , P. J. Hirschfeld , Brian M. Andersen

This article proposes that superconductivity in the ferromagnetic state of ZrZn$_2$ is stabilized by an exchange-type interaction between the magnetic moments of triplet-state Cooper pairs and the ferromagnetic magnetization density. This…

Superconductivity · Physics 2009-11-07 M. B. Walker , K. V. Samokhin

It is shown that interlayer spin-singlet Cooper pairing is induced by magnetic interactions in a metallic antiferromagnet of stacked conductive layers in which each layer is ferromagnetically polarized and they order antiferromagnetically…

Superconductivity · Physics 2007-05-23 Hiroshi Shimahara

Spin-dependent diffraction occurs in helimagnet-related transport processes. In this work, we investigated quantum pumping properties in the normal-metal/helimagnet/normal-metal heterostructure driven by two out of phase time-dependent gate…

Mesoscale and Nanoscale Physics · Physics 2015-06-17 Rui Zhu , Li-Juan Cui

The magnetic response expected from a state characterized by rotating antiferromagnetism in a neutron-scattering experiment is calculated. We predict the occurrence of a peak at the frequency of the rotation of the rotating…

Strongly Correlated Electrons · Physics 2015-06-19 Mohamed Azzouz

We theoretically study spin pumping into a spin-nematic state in a junction system composed of a ferromagnetic insulator and a spin-nematic insulator, described by using the spin-1 bilinear-biquadratic model. We analyze an increase of the…

Mesoscale and Nanoscale Physics · Physics 2025-04-22 Takuto Ishikawa , Wolfgang Belzig , Takeo Kato

We study the superconductivity of spin-polarized electrons in centrosymmetric ferromagnetic metals. Due to the spin-polarization and the Fermi statistics of electrons, the superconducting pairing function naturally has odd parity. According…

Mesoscale and Nanoscale Physics · Physics 2020-03-18 Junyeong Ahn , Bohm-Jung Yang

Correlation-induced spin-charge and spin-orbital coupling effects on spin dynamics in ferromagnetic manganites are calculated with realistic parameters in order to provide a quantitative comparison with experimental results for spin…

Strongly Correlated Electrons · Physics 2015-05-18 Dheeraj Kumar Singh , Bhaskar Kamble , Avinash Singh

We present a theory of superconducting pairing originating from soft critical fluctuations near isospin-polarized states in rhombohedral trilayer graphene. Using a symmetry-based approach, we determine possible isospin order types and…

Superconductivity · Physics 2021-09-10 Zhiyu Dong , Leonid Levitov

A general definition of the Spintronics concept of spin-pumping is proposed as generalized forces conjugated to the spin degrees of freedom in the framework of the theory of mesoscopic non-equilibrium thermodynamics. It is shown that at…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 J. -E. Wegrowe , H. -J. Drouhin

An unconventional superconductor is distinguished with two types of gap functions: unitary and non-unitary. This core subject has been concentrated on purely spin-triplet or singlet-triplet mixed superconductors. However, the generalization…

Superconductivity · Physics 2023-03-29 Meng Zeng , Dong-Hui Xu , Zi-Ming Wang , Lun-Hui Hu

We uncover a new superconducting state with partial spin polarization induced by a magnetic field. This state, which we call "magnonic superconductor", lacks a conventional pairing order parameter, but is characterized instead by a…

Superconductivity · Physics 2025-01-07 Khachatur G. Nazaryan , Liang Fu

We have investigated charge transport in ultrasmall superconducting single and double Josephson junctions coupled to resonant modes of the electromagnetic environment. We observe pronounced current peaks in the transport characteristics of…

Superconductivity · Physics 2011-02-03 Yu. A. Pashkin , H. Im , J. Leppäkangas , T. F. Li , O. Astafiev , A. A. Abdumalikov , E. Thuneberg , J. S. Tsai

We present theoretical description of conduction electrons interacting with a domain wall in ferromagnetic metals. The description takes into account interaction between electrons. Within the semiclassical approximation we calculate the…

Materials Science · Physics 2009-11-07 V. K. Dugaev , J. Barnas , A. Lusakowski , L. A. Turski

In the celebrated Stern-Gerlach experiment an inhomogeneous static magnetic field separates a beam of charge-neutral atoms with opposite spins, thereby driving a ``spin current" normal to the propagation direction. Here we generalize it to…

Mesoscale and Nanoscale Physics · Physics 2024-10-21 Chengyuan Cai , Tao Yu