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We report measurements of the spin torque efficiencies in perpendicularly-magnetized Pt/Co bilayers where the Pt resistivity $\rho_{Pt}$ is strongly dependent on thickness $t_{Pt}$ . The damping-like spin Hall torque efficiency per unit…

Mesoscale and Nanoscale Physics · Physics 2016-03-30 Minh-Hai Nguyen , D. C. Ralph , R. A. Buhrman

We show that a result equivalent to Overhauser's famous Hartree-Fock instability theorem can be established for the case of a two-dimensional electron gas in the presence of Rashba spin-obit coupling. In this case it is the spatially…

Mesoscale and Nanoscale Physics · Physics 2010-08-12 George E. Simion , Gabriele F. Giuliani

Spin current generation and manipulation remain the key challenge of spintronics, in which relativistic spinorbit coupling (SOC) play a ubiquitous role. In this letter, we demonstrate that hidden Rashba spins in the non-magnetic,…

Mesoscale and Nanoscale Physics · Physics 2023-05-10 Hengzhe Lu , Zhibin Qi , Yuqiang Huang , Man Cheng , Feng Sheng , Zhengkuan Deng , Shi Chen , Chenqiang Hua , Pimo He , Yunhao Lu , Yi Zheng

The spin-split states subject to Rashba spin-orbit coupling in two-dimensional systems have long been accepted as pointing inplane and perpendicular to the corresponding wave vectors. This is in general true for free electron model, but…

Mesoscale and Nanoscale Physics · Physics 2009-12-13 Ming-Hao Liu , Ching-Ray Chang

Herein, we study the spin-wave dispersion and dissipation in a ferromagnetic insulator--normal metal--ferromagnetic insulator system. Long-range dynamic coupling because of spin pumping and spin transfer lead to collective magnetic…

Mesoscale and Nanoscale Physics · Physics 2014-11-25 Hans Skarsvag , Andre Kapelrud , Arne Brataas

We study how the Rashba spin-orbit interaction influences unconventional superconductivity in a two dimensional electron gas partially spin-polarized by a magnetic field. Somewhat surprisingly, we find that for all field orientations, only…

Superconductivity · Physics 2016-07-01 Ethan Lake , Caleb Webb , D. A. Pesin , O. A. Starykh

Epitaxial Y3Fe5O12 thin films have been deposited by off-axis sputtering, which exhibit excellent crystalline quality, enabling observation of large spin pumping signals in Pt/Y3Fe5O12 and W/Y3Fe5O12 bilayers driven by cavity ferromagnetic…

Materials Science · Physics 2014-05-20 H. L. Wang , C. H. Du , Y. Pu , R. Adur , P. C. Hammel , F. Y. Yang

We present a study of the effects of inelastic scattering on the transport properties of various nanoscale devices, namely H$_2$ molecules sandwiched between Pt contacts, and a spin-valve made by an organic molecule attached to model…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 N. Jean , S. Sanvito

In this work we investigate spin diffusion in InAs quantum wells with the Rashba spin-orbit coupling modulated by a gate voltage. The gate voltage dependence of the spin diffusion under different temperatures is studied with all the…

Mesoscale and Nanoscale Physics · Physics 2011-04-01 B. Y. Sun , P. Zhang , M. W. Wu

We report broadband spectroscopy and numerical analysis by which we explore propagating spin waves in a magnetic bilayer consisting of a 23 nm thick permalloy film deposited on 130 nm thick $Y_{3}Fe_{5}O_{12}$. In the bilayer, we observe a…

Applied Physics · Physics 2019-04-03 Kyongmo An , Vinayak Bhat , Michal Mruczkiewicz , Carsten Dubs , Dirk Grundler

The entanglement of the charge, spin and orbital degrees of freedom can give rise to emergent behavior especially in thin films, surfaces and interfaces. Often, materials that exhibit those properties require large spin orbit coupling. We…

Mesoscale and Nanoscale Physics · Physics 2018-01-03 Paul C Lou , Sandeep Kumar

We have studied the BiCu$_2$/Cu(111) surface alloy using low-temperature scanning tunneling microscopy and spectroscopy. We observed standing waves caused by scattering off defects and step edges. Different from previous studies on similar…

Materials Science · Physics 2015-06-16 Manuel Steinbrecher , Hasmik Harutyunyan , Christian R. Ast , Daniel Wegner

The spin precession in a cylindrical semiconductor nanowire due to Rashba spin-orbit coupling has been investigated theoretically using an InAs nanowire containing a surface two-dimensional electron gas as a model. The eigenstates,…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 A. Bringer , Th. Schäpers

The spin dependent reflection in quasi-two-dimensional electron gas from an impenetrable barrier in presence of Rashba and Dresselhaus spin-orbit coupling is analyzed in detail. It is shown that due to spin-orbit effects the reflected beam…

Mesoscale and Nanoscale Physics · Physics 2019-06-20 S. K. Pandey , T. P. Pareek

Ferroelectric Rashba semiconductors (FERSC) have recently emerged as a promising class of spintronics materials. The peculiar coupling between spin and polar degrees of freedom responsible for several exceptional properties, including…

Materials Science · Physics 2019-07-10 H. Wang , P. Gopal , S. Picozzi , S. Curtarolo , M. Buongiorno Nardelli , J. Slawinska

In transition-metal dichalcogenides, electrons in the K-valleys can experience both Ising and Rashba spin-orbit couplings. In this work, we show that the coexistence of Ising and Rashba spin-orbit couplings leads to a special type of valley…

Mesoscale and Nanoscale Physics · Physics 2019-03-04 Benjamin T. Zhou , Katsuhisa Taguchi , Yuki Kawaguchi , Yukio Tanaka , K. T. Law

There exists considerable confusion in estimating the spin diffusion length of materials with high spin-orbit coupling from spin pumping experiments. For designing functional devices, it is important to determine the spin diffusion length…

Mesoscale and Nanoscale Physics · Physics 2017-11-27 Kuntal Roy

The initialization and control of a long-lived spin population in lead halide perovskites are prerequisites for their use in spintronic applications. Here, we demonstrate circular polarization of the interlayer exciton emission in a…

We investigate the nu=1 quantum Hall ferromagnet in the presence of spin-orbit coupling of the Rashba or Dresselhaus type by means of Hartree-Fock-typed variational states. In the presence of Rashba (Dresselhaus) spin-orbit coupling the…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 John Schliemann , J. Carlos Egues , Daniel Loss

We study pairing formation and the appearance of induced spin-triplet p-wave superfluidity in dilute three-dimensional imbalanced Fermi gases in the presence of a uniform non-Abelian gauge field. This gauge field generates a synthetic…

Quantum Gases · Physics 2015-09-02 Heron Caldas , Mucio Continentino
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