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It was proposed that a double quantum dot can be used to be a detector of spin bias. Electron transport through a double quantum dot is investigated theoretically when a pure spin bias is applied on two conducting leads contacted to the…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Qing-feng Sun , Yanxia Xing , Shun-Qing Shen

Solid-state spin defects are attractive candidates for developing quantum sensors and simulators. The spin and charge degrees of freedom in large defect ensembles are a promising platform to explore complex many-body dynamics and the…

Spin parity effects refer to those special situations where a dichotomy in the physical behavior of a system arises, solely depending on whether the relevant spin quantum number is integral or half-odd integral. As is the case with the…

Statistical Mechanics · Physics 2024-09-10 Shuntaro Sumita , Akihiro Tanaka , Yusuke Kato

We consider electrical transport through molecules with Heisenberg-coupled spins arranged in a ring structure in the presence of an easy-axis anisotropy. The molecules are coupled to two metallic leads and a gate. In the charged state of…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Jörg Lehmann , Daniel Loss

The cavity mediated spin current between two ferrite samples has been reported by Bai et. al. [Phys. Rev. Lett. 118, 217201 (2017)]. This experiment was done in the linear regime of the interaction in the presence of external drive. In the…

Quantum Physics · Physics 2020-09-16 Jayakrishnan M. P. Nair , Zhedong Zhang , Marlan O. Scully , Girish S. Agarwal

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…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Leon Balents , Reinhold Egger

We investigate the dynamics of two coupled vortices driven by spin transfer. We are able to independently control with current and perpendicular field, and to detect, the respective chiralities and polarities of the two vortices. For…

Materials Science · Physics 2015-05-18 N. Locatelli , V. V. Naletov , J. Grollier , G. de Loubens , V. Cros , C. Deranlot , C. Ulysse , G. Faini , O. Klein , A. Fert

Transporting ensembles of electrons over long distances without losing their spin polarization is an important benchmark for spintronic devices. It requires usually to inject and to probe spin polarized electrons in conduction channels…

Mesoscale and Nanoscale Physics · Physics 2017-06-28 B. Bertrand , S. Hermelin , S. Takada , M. Yamamoto , S. Tarucha , A. Ludwig , A. D. Wieck , C. Bäuerle , T. Meunier

The ability to coherently transport electron-spin states between different sites of gate-defined semiconductor quantum dots is an essential ingredient for a quantum-dot-based quantum computer. Previous shuttles using electrostatic gating…

Mesoscale and Nanoscale Physics · Physics 2016-07-27 T. A. Baart , N. Jovanovic , C. Reichl , W. Wegscheider , L. M. K. Vandersypen

We predict that a single-level quantum dot without discernible splitting of its spin states develops a spin-precession resonance in charge transport when embedded into a spin valve. The resonance occurs in the generic situation of Coulomb…

Mesoscale and Nanoscale Physics · Physics 2016-04-05 M. Hell , B. Sothmann , M. Leijnse , M. R. Wegewijs , J. König

We propose a scheme where transport measurements of charge current and its noise can be used to determine the spin Hall conductance in a four-terminal setup. Starting from the scattering formalism we express the spin current and spin Hall…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Sigurdur I. Erlingsson , Daniel Loss

We theoretically study the quench dynamics of induced anisotropy of a large-spin magnetic molecule coupled to spin-polarized ferromagnetic leads. The real-time evolution is calculated by means of the time-dependent density-matrix numerical…

Mesoscale and Nanoscale Physics · Physics 2020-07-01 Kacper Wrześniewski , Ireneusz Weymann

Tunable synthetic spin-orbit coupling (s-SOC) is one of the key challenges in various quantum systems, such as ultracold atomic gases, topological superconductors, and semiconductor quantum dots. Here we experimentally demonstrate…

Spin transport typically relies on direct manipulation of the spin degree of freedom via magnetic fields, spin-orbit coupling, or engineered spin-dependent potentials. We show theoretically that directional spin currents can arise in a…

We study the influence of spin waves on transport through a single-level quantum dot weakly coupled to ferromagnetic electrodes with noncollinear magnetizations. Side peaks appear in the differential conductance due to emission and…

Mesoscale and Nanoscale Physics · Physics 2010-11-15 Björn Sothmann , Jürgen König , Anatoli Kadigrobov

We study the effects of spin-flip scatterings on the time-dependent transport properties through a magnetic quantum dot attached to normal and ferromagnetic leads. The transient spin-dynamics as well as the steady-state tunneling…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Enrico Perfetto , Gianluca Stefanucci , Michele Cini

Semiconductor spin qubits offer a unique opportunity for scalable quantum computation by leveraging classical transistor technology. Hole spin qubits benefit from fast all-electrical qubit control and sweet spots to counteract charge and…

We propose the second-order response of metals in an electric field induced by magnetic impurities which locally break inversion symmetry. The impurities with toroidal moments scatter conduction electrons in the presence of the spin-orbit…

Disordered Systems and Neural Networks · Physics 2022-10-04 Hiroki Isobe , Naoto Nagaosa

We study spin-orbit torques and charge pumping in magnetic quasi-one dimensional zigzag nanoribbons with hexagonal lattice, in the presence of large intrinsic spin-orbit coupling. Such a system experiences topological phase transition from…

Mesoscale and Nanoscale Physics · Physics 2016-08-03 Hang Li , Aurelien Manchon

We discuss the spiral spin density wave model and its application to explain properties of underdoped La$_{2-x}$Sr$_x$CuO$_4$. We argue that the spiral picture is theoretically well justified in the context of the extended $t-J$ model, and…

Strongly Correlated Electrons · Physics 2007-05-23 Valeri N. Kotov , Oleg P. Sushkov
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