558 citations · 1.9k across the 16 of their papers we have counts for
16 papers
Fermi Level Dependent Spin Pumping from a Magnetic Insulator into a Topological Insulator
Hailong Wang, James Kally, Cuneyt Sahin +7
Topological spintronics aims to exploit the spin-momentum locking in the helical surface states of topological insulators for spin-orbit torque devices. We address a fundamental qu…
Surface state dominated spin-charge current conversion in topological insulator/ferromagnetic insulator heterostructures
Hailong Wang, James Kally, Joon Sue Lee +7
We report the observation of ferromagnetic resonance-driven spin pumping signals at room temperature in three-dimensional topological insulator thin films -- Bi2Se3 and (Bi,Sb)2Te3…
Cantilever detected ferromagnetic resonance in thin FeNi, CoFeAlSi and SrFeMoO films using a double modulation technique
Alexey Alfonsov, Eiji Ohmichi, Pavel Leksin +5
In this work we introduce a new method of a ferromagnetic resonance (FMR) detection from thin, nm-size, films. Our setup is based on the commercial piezo-cantilever, used for atomi…
Antiferromagnonic Spin Transport from YFeO into NiO
Hailong Wang, Chunhui Du, P. Chris Hammel +1
We observe highly efficient dynamic spin injection from YFeO (YIG) into NiO, an antiferromagnetic (AF) insulator, via strong coupling, and robust spin propagation in…
Spin Transport in Antiferromagnetic Insulators Mediated by Magnetic Correlations
Hailong Wang, Chunhui Du, P. Chris Hammel +1
We report a systematic study of spin transport in antiferromagnetic (AF) insulators having a wide range of ordering temperatures. Spin current is dynamically injected from Y3Fe5O12…
Experimental and Numerical Understanding of Localized Spin Wave Mode Behavior in Broadly Tunable Spatially Complex Magnetic Configurations
Chunhui Du, Rohan Adur, Hailong Wang +4
Spin wave modes confined in a ferromagnetic film by the spatially inhomogeneous magnetic field generated by a scanned micromagnetic tip of a ferromagnetic resonance force microscop…
Y3Fe5O12 Spin Pumping for Quantitative Understanding of Pure Spin Transport and Spin Hall Effect in a Broad Range of Materials
Chunhui Du, Hailong Wang, P. Chris Hammel +1
Using Y3Fe5O12 (YIG) thin films grown by our sputtering technique, we study dynamic spin transport in nonmagnetic (NM), ferromagnetic (FM) and antiferromagnetic (AF) materials by f…
Surprisingly large inverse spin Hall effect and systematic variation of spin-orbit coupling with d-orbital filling in 3d transition metals
Chunhui Du, Hailong Wang, Fengyuan Yang +1
It is generally believed that spin-orbit coupling (SOC) follows Z4 (atomic number) dependence and becomes significant only in heavy elements. Consequently, SOC in 3d transition met…
Enhancement of Pure Spin Currents in Spin Pumping Y3Fe5O12/Cu/metal Trilayers through Spin Conductance Matching
Chunhui Du, Hailong Wang, Fengyuan Yang +1
Spin transport efficiency in heterostructures depends on the spin conductances of each constituent and their interfaces. We report a comparative study of spin pumping in Y3Fe5O12/C…
Damping of Confined Modes in a Ferromagnetic Thin Insulating Film: Angular Momentum Transfer Across a Nanoscale Field-defined Interface
Rohan Adur, Chunhui Du, Hailong Wang +6
We observe a dependence of the damping of a confined mode of precessing ferromagnetic magnetization on the size of the mode. The micron-scale mode is created within an extended, un…
Off-Resonant Manipulation of Spins in Diamond via Precessing Magnetization of a Proximal Ferromagnet
Chris S. Wolfe, Vidya P. Bhallamudi, Hilong L. Wang +6
We report the manipulation of nitrogen vacancy (NV) spins in diamond when nearby ferrimagnetic insulator, yttrium iron garnet, is driven into precession. The change in NV spin pola…
Strain-Tunable Magnetocrystalline Anisotropy in Epitaxial Y3Fe5O12 Thin Films
Hailong Wang, Chunhui Du, Chris Hammel +1
We demonstrate strain-tuning of magnetocrystalline anisotropy over a range of more than one thousand Gauss in epitaxial Y3Fe5O12 films of excellent crystalline quality grown on lat…
Probing the Spin Pumping Mechanism: Exchange Coupling with Exponential Decay in Y3Fe5O12/barrier/Pt Heterostructures
C. H. Du, H. L. Wang, Y. Pu +4
Ferromagnetic resonance driven spin pumping of pure spin currents from a ferromagnet into a nonmagnetic material promises new spin-functional devices with low energy consumption. T…
Large Spin Pumping from Epitaxial Y3Fe5O12 Thin Films to Pt and W Layers
H. L. Wang, C. H. Du, Y. Pu +3
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/Y3Fe…
Scaling of spin Hall angle in 3d, 4d and 5d metals from Y3Fe5O12/metal spin pumping
H. L. Wang, C. H. Du, Y. Pu +3
Pure spin currents generated by spin pumping in ferromagnet/nonmagnet (FM/NM) bilayers produce inverse spin Hall effect (ISHE) voltages in the NM, from which spin pumping and trans…
Long-range FMR driven spin pumping through a nonmagnetic insulator
Y. Pu, H. L. Wang, C. H. Du +8
Ferromagnetic resonance (FMR) driven spin pumping is an emerging technique for injection of a pure spin current from a ferromagnet (FM) into a non-magnetic (NM) material without an…