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Despite its potential for device application, the non-magnetic Zeeman effect has only been predicted and observed in two-dimensional compounds. We demonstrate that non-centrosymmetric three-dimensional compounds can also exhibit a…

Materials Science · Physics 2022-02-11 Carlos Mera Acosta , Adalberto Fazzio , Gustavo M. Dalpian

We propose making light emitting diodes out of inverse spin valves. The proposed diodes rely on the spin-dependent electron transport of inverse spin valves that are layered structures of a ferromagnetic half-metal sandwiched between two…

Materials Science · Physics 2015-05-13 X. R. Wang

A proposal of a spin separator based on the spin Zeeman effect in Y-shaped nanostructure with a quantum point contact is presented. Our calculations show that the appropriate tuning of the quantum point contact potential and the external…

Mesoscale and Nanoscale Physics · Physics 2014-06-12 P. Wojcik , M. Woloszyn , B. J. Spisak , J. Adamowski

A mechanism is advanced suggesting the resolution of the dichotomy of long-lived spin polarization storage versus fast spin reversal at the required time. A system of atoms or molecules is considered interacting through magnetic dipolar…

Mesoscale and Nanoscale Physics · Physics 2018-11-14 V. I. Yukalov , E. P. Yukalova

We propose a spin valve that is based on van der Waals antiferromagnetism and fully electrically controlled. The device is composed of two antiferromagnetic terminals that allow for vertical bias control and a linked central scattering…

Mesoscale and Nanoscale Physics · Physics 2021-07-15 Xue-Chao Zhai , Ziming , Xu , Qirui Cui , Yingmei Zhu , Hongxin Yang , Yaroslav M. Blanter

Transition metal dichalcogenides exhibit giant spin-orbit coupling, and intriguing spin-valley effects, which can be harnessed through proximity in van der Waals (vdW) heterostructures. Remarkably, due to the prismatic crystal field, the…

We consider a mesoscopic normal metal, where the spin degeneracy is lifted by a ferromagnetic exchange field or Zeeman splitting, coupled to two superconducting reservoirs. As a function of the exchange field or the distance between the…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Tero T. Heikkila , Frank K. Wilhelm , Gerd Schoen

Centrosymmetric antiferromagnetic semiconductors, although abundant in nature, seem less promising than ferromagnets and ferroelectrics for practical applications in semiconductor spintronics. As a matter of fact, the lack of spontaneous…

Materials Science · Physics 2022-10-31 Hong Jian Zhao , Xinran Liu , Yanchao Wang , Yurong Yang , Laurent Bellaiche , Yanming Ma

Monolayers of semiconducting transition metal dichalcogenides exhibit intriguing fundamental physics of strongly coupled spin and valley degrees of freedom for charge carriers. While the possibility of exploiting these properties for…

Andreev reflection in ferromagnet-superconductor junctions is derived in a regime in which Zeeman splitting dominates the response of the superconductor to an applied magnetic field. Spin-up and spin-down Andreev reflections are shown to be…

Superconductivity · Physics 2009-10-31 R. Mélin

An electrical current can transfer spin angular momentum to a ferromagnet. This novel physical phenomenon, called spin transfer, offers unprecedented spatial and temporal control over the magnetic state of a ferromagnet and has tremendous…

Materials Science · Physics 2007-05-23 Z. Wei , A. Sharma , A. S. Nunez , P. M. Haney , R. A. Duine , J. Bass , A. H. MacDonald , M. Tsoi

By deriving the quantum hydrodynamic equations for an isotropic single-band ferromagnet in an arbitrary magnetic field, we find that a massive mode recently predicted splits under the action of the field. The splitting is a peculiarity of…

Strongly Correlated Electrons · Physics 2024-08-15 Paulo F. Farinas , Kevin S. Bedell

We have studied the spin-splitting effect in a four-terminal two-dimensional (2D) electron gas system with two potential barriers generated by two surface metal gates and an external perpendicular magnetic field. The calculations show that…

Mesoscale and Nanoscale Physics · Physics 2019-06-26 Zijiang Wang , Jianhong He , Huazhong Guo

We present an extension to simple s-d models, aiming at simulating ultrafast magnetization dynamics and spin transport in metallic heterostructures. In particular, we consider an alternative spin dissipation channel due to a finite exchange…

Materials Science · Physics 2023-06-14 Quentin Remy

We have calculated the spin-polarization effects of a current in a two dimensional electron gas which is contacted by two ferromagnetic metals. In the purely diffusive regime, the current may indeed be spin-polarized. However, for a typical…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 G. Schmidt , L. W. Molenkamp , A. T. Filip , B. J. van Wees

The resistance of a ferromagnet/superconductor/ferromagnet (F/S/F) spin valve near its superconducting transition temperature, $T_c$, depends on the state of magnetization of the F layers. This phenomenon, known as spin switch effect (SSE),…

Superconductivity · Physics 2009-03-03 J. Zhu , X. Cheng , C. Boone , I. N. Krivorotov

The dynamics of the magnetic order parameters of ferromagnet/normal-metal/ferromagnet spin valves and isolated ferromagnets may be very different. We investigate the role of the nonequilibrium spin-current exchange between the ferromagnets…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Yaroslav Tserkovnyak , Arne Brataas , Gerrit E. W. Bauer

The Zeeman effect lowers the energy of electrons with spin states which are anti-parallel to the applied magnetic field but lifts that of spin parallel states. In quantum spin liquids where the spin and charge degrees of freedom are…

Strongly Correlated Electrons · Physics 2023-06-05 Wen-Yu He , Patrick A. Lee

A theoretical prediction of the spin-dependent electron self-energy and in-plane transport of a two-dimensional electron gas in proximity with a ferromagnetic gate is presented. The application of the predicted spin-dependent properties is…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 C. Ciuti , J. P. McGuire , L. J. Sham

A hybrid ferromagnet-superconductor spin valve is proposed. Its operation relies on the interplay between nonequilibrium transport and proximity-induced exchange coupling in superconductors. Huge tunnel magnetoresistance values as large as…

Superconductivity · Physics 2007-05-23 F. Giazotto , F. Taddei , Rosario Fazio , F. Beltram
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