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We report on the propagation of spin waves in permalloy microstripes. By means of scanning Kerr microscopy combined with continuous microwave excitation, we detect the time evolution of spin-wave interference patterns in an external…

介观与纳米尺度物理 · 物理学 2009-05-14 Andreas Krohn , Sebastian Mansfeld , Jan Podbielski , Jesco Topp , Wolfgang Hansen , Detlef Heitmann , Stefan Mendach

A novel scheme for non-volatile digital computation is proposed using spin-transfer torque (STT) and automotion of magnetic domain walls (DWs). The basic computing element is composed of a lateral spin valve (SV) with two ferromagnetic (FM)…

新兴技术 · 计算机科学 2016-09-21 Sou-Chi Chang , Sasikanth Manipatruni , Dmitri E. Nikonov , Ian A. Young , Azad Naeemi

We find extraordinary behavior of the local two-terminal spin accumulation signals in ferromagnet (FM)/semiconductor (SC) lateral spin-valve devices. With respect to the bias voltage applied between two FM/SC Schottky tunnel contacts, the…

介观与纳米尺度物理 · 物理学 2019-08-16 Y. Fujita , M. Yamada , M. Tsukahara , T. Naito , S. Yamada , S. Oki , K. Sawano , K. Hamaya

The knowledge of the spin diffusion length $\lambda_{A}$ is a prerequisite for the estimation of the spin Hall angle. We investigate spin current absorption of materials with small $\lambda_{A}$ using AuW stripes inserted in lateral…

We propose a device acting as a spin valve which is based on a double quantum dot structure with parallel topology. Using the exact analytical solution for the noninteracting case we argue that, at a certain constellation of system…

介观与纳米尺度物理 · 物理学 2010-03-18 J. P. Dahlhaus , S. Maier , A. Komnik

We consider a non-local spin valve in a Van der Pauw cross geometry with four ferromagnetic electrodes. Two antiparallel ferromagnets are used as (charge) source and drain while the detector circuit involves measuring the voltage between…

介观与纳米尺度物理 · 物理学 2012-01-17 K. -V. Pham

The technique of low-temperature Laser Scanning Microscopy (LSM) has been applied to the investigation of local microwave properties in operating YBa2Cu3O7/LaAlO3 thin-film resonators patterned into a meandering strip transmission line. By…

超导电性 · 物理学 2009-09-14 Alexander P. Zhuravel , Steven M. Anlage , Alexey V. Ustinov

We have performed non-local spin injection into a nano-scale ferromagnetic particle configured in a lateral spin valve structure to switch its magnetization only by spin current. The non-local spin injection aligns the magnetization of the…

材料科学 · 物理学 2007-05-23 T. Kimura , Y. Otani , J. Hamrle

In this work, we have investigated the domain wall (DW) depinning behavior in the notched nanowire by a micromagnetic simulation. A transverse domain wall (TW) was initially positioned at the center of notch and 1 ns length current pulse…

介观与纳米尺度物理 · 物理学 2016-03-23 Candra Kurniawan , Dede Djuhana

Understanding how a spin current flows across metal-semiconductor interfaces at pico- and femtosecond timescales has implications for ultrafast spintronics, data processing and storage applications. However, the possibility to directly…

Recent experimental breakthroughs have demonstrated that the electron spin in silicon can be reliably injected and detected as well as transferred over distances exceeding 1 mm. We propose an on-chip communication paradigm which is based on…

材料科学 · 物理学 2011-09-23 Hanan Dery , Yang Song , Pengke Li , Igor Zutic

When two fully polarized ferromagnetic (F) wires with opposite polarizations make contact with a spin-singlet superconductor, a potential-induced current in wire 1 induces a non-local current of equal magnitude and sign in wire 2. The…

介观与纳米尺度物理 · 物理学 2017-08-23 C. J. Lambert , J. Koltai , J. Cserti

The interaction between electron spin and molecular chirality plays a fundamental role in quantum phenomena, with significant implications for spintronics and quantum computing. The chirality-induced spin selectivity (CISS) effect, where…

We study the current flow paths between two edges in a random resistor network on a $L\times L$ square lattice. Each resistor has resistance $e^{ax}$, where $x$ is a uniformly-distributed random variable and $a$ controls the broadness of…

无序系统与神经网络 · 物理学 2016-08-16 Zhenhua Wu , Eduardo López , Sergey V. Buldyrev , Lidia A. Braunstein , Shlomo Havlin , H. Eugene Stanley

We study the multifractal properties of the current distribution of the three-dimensional random resistor network at the percolation threshold. For lattices ranging in size from $8^3$ to $80^3$ we measure the second, fourth and sixth…

凝聚态物理 · 物理学 2009-10-28 G. George Batrouni , Alex Hansen , Brond Larson

No-insulation (NI) coils are known for their high thermal stability and self-protection features due to turn-to-turn contacts. Parallel co-winding is a promising method to reduce the charging delay of NI coils while maintaining thermal…

应用物理 · 物理学 2025-07-14 Yulong Liu , Peng Song , Mianjun Xiao , Liangjun Shao , Ziyang Xu , Cedric Korte , Timing Qu

The role played by interfaces in metallic multilayers is not only to change the momenta of incident electrons; their symmetry lowering also results in an enhancement of the effects of spin-orbit coupling, in particular the flipping of the…

材料科学 · 物理学 2022-07-07 Ruixi Liu , Kriti Gupta , Zhe Yuan , Paul J. Kelly

The distribution is calculated of the electron spin polarization under current-driven spin injection from a probe to a ferromagnetic film. It is shown that the main parameters determining difference of the spin polarization from the…

材料科学 · 物理学 2009-12-15 S. G. Chigarev , E. M. Epshtein , Yu. V. Gulyaev , A. I. Panas , V. G. Shofman , P. E. Zilberman

It is a common perception that the transport of a spin current in polycrystalline metal is isotropic and independent of the polarization direction, even though spin current is a tensorlike quantity and its polarization direction is a key…

介观与纳米尺度物理 · 物理学 2017-09-22 Chao Zhou , Fatih Kandaz , Yunjiao Cai , Chuan Qin , Mengwen Jia , Zhe Yuan , Yizheng Wu , Yi Ji

We demonsrtate electrical spin injection and detection in $n$-type Ge ($n$-Ge) at room temperature using four-terminal nonlocal spin-valve and Hanle-effect measurements in lateral spin-valve (LSV) devices with Heusler-alloy Schottky tunnel…