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It is shown that in organic semiconductors where organic magnetoresistance (OMAR) is observed, the exchange interaction between electrons and holes localized at different molecules leads to dynamic spin polarization in the direction of the…

无序系统与神经网络 · 物理学 2022-04-06 A. V. Shumilin

We study the Zeeman spin-splitting in hole quantum wires oriented along the $[011]$ and $[01\bar{1}]$ crystallographic axes of a high mobility undoped (100)-oriented AlGaAs/GaAs heterostructure. Our data shows that the spin-splitting can be…

介观与纳米尺度物理 · 物理学 2015-05-14 J. C. H. Chen , O. Klochan , A. P. Micolich , A. R. Hamilton , T. P. Martin , L. H. Ho , U. Zuelicke , D. Reuter , A. D. Wieck

We find a novel topological defect in a spin-nematic superfluid theoretically. A quantized vortex spontaneously breaks its axisymmetry, leading to an elliptic vortex in nematic-spin Bose-Einstein condensates with small positive quadratic…

量子气体 · 物理学 2021-05-14 Hiromitsu Takeuchi

EDMs probe fundamental symmetries and underpin BSM searches. We give a symmetry-based description, analogous to the Zeeman effect, that puts magnetic and electric dipoles on equal footing under EM duality. In hydrogen, $\vec B$…

原子物理 · 物理学 2026-02-17 Michael E. Tobar

We study electronic transport through a ferromagnet normal-metal ferromagnet system and we investigate the effect of hyperfine interaction between electrons and nuclei in the normal-metal part. A switching of the magnetization directions of…

介观与纳米尺度物理 · 物理学 2009-11-11 J. Danon , Yu. V. Nazarov

The key physics of the spin valve involves spin-polarized conduction electrons propagating between two magnetic layers such that the device conductance is controlled by the relative magnetization orientation of two magnetic layers. Here, we…

介观与纳米尺度物理 · 物理学 2018-04-04 H. Wu , L. Huang , C. Fang , B. S. Yang , C. H. Wan , G. Q. Yu , J. F. Feng , H. X. Wei , X. F. Han

A drastic modification of electronic band structure is predicted in bilayer graphene when it is placed between two ferromagnetic insulators. Due to the exchange interaction with the proximate ferromagnet, the electronic energy dispersion in…

材料科学 · 物理学 2008-04-04 Y. G. Semenov , K. W. Kim , J. M. Zavada

In an altermagnet, the symmetry that relates configurations with flipped magnetic moments is a rotation. This makes it qualitatively different from a ferromagnet, where no such symmetry exists, or a collinear antiferromagnet, where this…

介观与纳米尺度物理 · 物理学 2024-01-04 Rafael M. Fernandes , Vanuildo S. de Carvalho , Turan Birol , Rodrigo G. Pereira

Nonlinear magnetic interactions provide access to complex quantum spin dynamics and thus enable the study of intriguing physical phenomena. However, these interactions are often dominated by the linear Zeeman effect, which can complicate…

We consider DC supercurrents in SNS junctions. Spin-orbit coupling in combination with Zeeman fields can induce an effective vector potential in the normal conductor. As a consequence, an out-of-plane spin-density varying along the…

超导电性 · 物理学 2009-09-09 A. G. Mal'shukov , Severin Sadjina , Arne Brataas

It has been predicted theoretically that an unconventional odd-frequency spin-triplet component of superconducting order parameter can be induced in multilayered ferromagnetic structures with non-collinear magnetization. In this work we…

超导电性 · 物理学 2015-06-19 Adrian Iovan , Taras Golod , Vladimir M. Krasnov

The spin-Seebeck effect was recently discovered in a metallic ferromagnet and consists of a thermally generated spin distribution that is electrically measured utilizing the inverse spin Hall effect. Here this effect is reproduced…

材料科学 · 物理学 2010-10-27 C. M. Jaworski , J. Yang , S. Mack , D. D. Awschalom , J. P. Heremans , R. C. Myers

The spin Hall effect in nonmagnetic materials has been intensively studied and became one of the most crucial spin-charge conversion mechanism in spintronics. However, the spin Hall effect in ferromagnetic metals has been less investigated…

材料科学 · 物理学 2023-08-08 Fanxing Zheng , Jianting Dong , Xinlu Li , Meng Zhu , Ye Zhou , Jia Zhang

We show theoretically that specular Andreev reflection occurs stably at altermagnet--superconductor interfaces, which is a phenomenon that has previously been predicted only in a limited range of materials, such as Dirac/Weyl materials with…

超导电性 · 物理学 2025-04-09 Yutaro Nagae , Andreas P. Schnyder , Satoshi Ikegaya

The magnetic reversal by spin-polarized current of a magnetic junction consisting of two ferromagnetic layers and a nonmagnetic spacer in between is considered. Initially, the free layer is magnetized antiparallel to the pinned layer by an…

材料科学 · 物理学 2007-05-23 R. J. Elliott , E. M. Epshtein , Yu. V. Gulyaev , P. E. Zilberman

We find an intervalley wave collective mode in two- and three-dimensional Dirac semimetals in the presence of a valley population imbalance. The dispersion relation of this mode is gapless, proportional to the square of the wave vector at…

介观与纳米尺度物理 · 物理学 2019-10-08 A. A. Zyuzin , A. Yu. Zyuzin

The split superconducting transition of up-spin and down-spin electrons on the background of ferromagnetism is studied within the framework of a recent model that describes the coexistence of ferromagnetism and superconductivity induced by…

超导电性 · 物理学 2009-11-10 D. Belitz , T. R. Kirkpatrick

Motivated by a recent magnetization reversal experiment on a TbFeCo thin film, we study a topological excitation in the anisotropic nonlinear sigma model together with the Zeeman and magnetic dipole-dipole interactions. Dipole-dipole…

强关联电子 · 物理学 2011-03-22 Motohiko Ezawa

Spin Hall effect and its inverse provide essential means to convert charge to spin currents and vice versa, which serve as a primary function for spintronic phenomena such as the spin-torque ferromagnetic resonance and the spin Seebeck…

介观与纳米尺度物理 · 物理学 2015-11-03 Yasuhiro Niimi , YoshiChika Otani

Spin valves are essential components in spintronic memory devices, whose conductance is modulated by controlling spin-polarized electron tunneling through the alignment of the magnetization in ferromagnetic elements. Whereas conventional…