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A WSe$_2$ monolayer shows many interesting properties due to its spin-orbit coupling induced spin splitting in bands around the Fermi level and the spin-valley configuration. The orientation of the spin polarization in the relevant bands is…

材料科学 · 物理学 2022-11-02 Hong Tang , Santosh Neupane , Li Yin , Jason M. Breslin , Adrienn Ruzsinszky

Novel noncollinear antiferromagnets with spontaneous time-reversal symmetry breaking, nontrivial band topology, and unconventional transport properties have received immense research interest over the past decade due to their rich physics…

Entanglement can improve the measurement precision of quantum sensors beyond the shot noise limit. Neutral atoms, the basis of some of the most precise and accurate optical clocks and interferometers, do not naturally exhibit all-to-all…

The spin transfer torque is a phenomenon in which angular momentum of a spin polarized electrical current entering a ferromagnet is transferred to the magnetization. The effect has opened a new research field of electrically driven…

In this study, we have studied the quantum tunneling of a single spin-orbit-coupled atom held in a periodically modulated optical lattice with an impurity. At the pseudocollapse points of quasienergy bands, where the dynamical localization…

量子物理 · 物理学 2019-05-22 Xiaobing Luo , Baiyuan Yang , Jin Cui , Yu Guo , Lei Li , Qianglin Hu

We investigate the interplay between spin currents and spin waves in nanofabricated Permalloy waveguides with geometrical constrictions. Using propagating spin-wave spectroscopy, micromagnetic simulations, and analytical modeling, we…

Electric fields are increasingly used for coherently manipulating spin states in semiconductor and molecular systems. Here we discuss the spin manipulation allowed by the modulation of the main parameters entering the Hamiltonians of…

介观与纳米尺度物理 · 物理学 2019-11-05 F. Troiani

We present measurements of magnetic tunnel junctions made using a self-assembled-monolayer molecular barrier. Ni/octanethiol/Ni samples were fabricated in a nanopore geometry. The devices exhibit significant changes in resistance as the…

介观与纳米尺度物理 · 物理学 2010-10-05 J. R. Petta , S. K. Slater , D. C. Ralph

Detailed understanding of spin dynamics in magnetic nanomaterials is necessary for developing ultrafast, low-energy and high-density spintronic logic and memory. Here, we develop micromagnetic models and analytical solutions to elucidate…

材料科学 · 物理学 2020-04-28 Furkan Şahbaz , Mehmet C. Onbaşlı

We investigate the charge and spin transport of a voltage-biased superconducting point contact coupled to a nanomagnet. The magnetization of the nanomagnet is assumed to precess with the Larmor frequency, $\omega_L$, due to ferromagnetic…

超导电性 · 物理学 2015-06-15 Cecilia Holmqvist , Mikael Fogelström , Wolfgang Belzig

We investigate effects of spin-orbit splitting on electronic transport in a spin valve consisting of a large quantum dot defined on a two-dimensional electron gas with two ferromagnetic contacts. In the presence of both structure inversion…

介观与纳米尺度物理 · 物理学 2007-05-23 H. Saarikoski , W. Wetzels , G. E. W. Bauer

We investigate the inelastic spin-flip rate for electrons in a quantum dot due to their contact hyperfine interaction with lattice nuclei. In contrast to other works, we obtain a spin-phonon coupling term from this interaction by taking…

介观与纳米尺度物理 · 物理学 2007-05-23 Veniamin A. Abalmassov , Florian Marquardt

The appealing feature of molecular electronics is the possibility of exploiting functionality built within a single molecule. This functionality can be employed, for example, for sensing or switching purposes. Thus, ideally, the associated…

One and two-electron systems confined in a single and coupled quantum dots defined within a nanowire with a finite radius are studied in the context of spin-orbit coupling effects. Anisotropy of the spin-orbit interaction is discussed in…

介观与纳米尺度物理 · 物理学 2013-05-30 M. P. Nowak , B. Szafran

We study the effects of the coupling between magnetization dynamics and the electronic degrees of freedom in a heterostructure of a metallic nanomagnet with dynamic magnetization coupled with a superconductor containing a steady…

介观与纳米尺度物理 · 物理学 2020-09-18 Risto Ojajärvi , Juuso Manninen , Tero T. Heikkilä , Pauli Virtanen

We study the influence of spin polarization on the degree of coherence of electron transport through interacting quantum dots. To this end, we identify transport regimes in which the degree of coherence can be related to the visibility of…

介观与纳米尺度物理 · 物理学 2010-11-04 Bastian Hiltscher , Michele Governale , Jürgen König

Using the nascent concept of quantum spin-transfer torque [A. Zholud et al., Phys. Rev. Lett. {\bf 119}, 257201 (2017); M. D. Petrovi\'{c} {\em et al.}, Phys. Rev. X {\bf 11}, 021062 (2021)], we demonstrate that a current pulse can be…

We investigate non-linear magneto-transport through a single level quantum dot coupled to ferromagnetic leads, where the electron spin is coupled to a large, external (pseudo)spin via an anisotropic exchange interaction. We find regimes…

介观与纳米尺度物理 · 物理学 2012-04-12 Carlos López-Monís , Clive Emary , Gerold Kiesslich , Gloria Platero , Tobias Brandes

We present a general formulation of spin-dependent transport through a clean one-dimensional interacting quantum wire or carbon nanotube, connected to non-collinear ferromagnets via tunnel junctions. We show that the low energy description…

介观与纳米尺度物理 · 物理学 2009-10-31 Leon Balents , Reinhold Egger

An antiferromagnet is a promising material for spin-orbit torque generation. Earlier studies of the spin-orbit torque in an antiferromagnet are limited to collinear spin configurations. We calculate the spin-orbit torque in an…

介观与纳米尺度物理 · 物理学 2018-04-04 Suik Cheon , Hyun-Woo Lee
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