Spin Hall torques generated by rare-earth thin films

  title={Spin Hall torques generated by rare-earth thin films},
  author={Neal Reynolds and Priyamvada Jadaun and John T. Heron and Colin L. Jermain and Jonathan Gibbons and Robyn Collette and Robert A. Buhrman and Darrell G. Schlom and Daniel C. Ralph},
  journal={Physical Review B},
We report an initial experimental survey of spin-Hall torques generated by the rare-earth metals Gd, Dy, Ho, and Lu, along with comparisons to first-principles calculations of their spin Hall conductivities. Using spin torque ferromagnetic resonance (ST-FMR) measurements and DC-biased ST-FMR, we estimate lower bounds for the spin-Hall torque ratio, $\xi_{SH}$, of $\approx$ 0.04 for Gd, $\approx$ 0.05 for Dy, $\approx$ 0.14 for Ho, and $\approx$ 0.014 for Lu. The variations among these elements… 

Spin-orbit torque-induced switching in ferrimagnetic alloys: Experiments and modeling

We investigate spin-orbit torque (SOT)-induced switching in rare-earth-transition metal ferrimagnetic alloys using W/CoTb bilayers. The switching current is found to vary continuously with the alloy

Giant Spin Hall Effect in Cu-Tb Alloy Thin Films.

The giant spin-current generation in CuTb alloys arising from the spin Hall effect is reported, paving a way for Rare-earth metals to be used as a spin Hall material in highly efficient SOT devices.

Strong, Temperature-Dependent Spin-Orbit Torques in Heavy Fermion YbAl$_3$

The use of current-generated spin-orbit torques[1] to drive magnetization dynamics is under investigation to enable a new generation of non-volatile, low-power magnetic memory. Previous research has

Inverse spin Hall effect in A u x T a 1 − x alloy films

Gold (Au) and tantalum (Ta) metals are two important spin Hall materials with diametrically different crystalline structure, resistivity, and spin Hall angle. By vapor quenching, AuxTa1-x alloys of

Reorientable Spin Direction for Spin Current Produced by the Anomalous Hall Effect

We show experimentally that the spin direction of the spin current generated by spin-orbit interactions within a ferromagnetic layer can be reoriented by turning the magnetization direction of this

Giant orbital Hall effect and orbital-to-spin conversion in 3d, 5d, and 4f metallic heterostructures

The orbital Hall effect provides an alternative means to the spin Hall effect to convert a charge current into a flow of angular momentum. Recently, compelling signatures of orbital Hall effects have

Influence of rare earth metal Ho on the interfacial Dzyaloshinskii-Moriya interaction and spin torque efficiency in Pt/Co/Ho multilayers.

It is found that the interfacial Dzyaloshinskii-Moriya interaction (DMI) and SOT in Pt/Co/Ho multilayers can be strongly influenced by changing the thickness of the Ho (tHo) layer.

Comprehensive Study of the Current-Induced Spin–Orbit Torque Perpendicular Effective Field in Asymmetric Multilayers

The spin–orbit torques (SOTs) in the heavy metal (HM)/ferromagnetic metal (FM) structure hold promise for next-generation low-power and high-density spintronic memory and logic applications. For the

Characterization of spin-orbit torque and thermoelectric effects via coherent magnetization rotation

Owing to the interplay between charge, spin, and orbits of electrons, spin-orbit torque (SOT) has attracted considerable interest during the past decade. Despite substantial progress, the existing

Enhanced spin–orbit torque efficiency in Pt/Co/Ho heterostructures via inserting Ho layer

Spin–orbit torque (SOT) is a promising approach to manipulate the magnetization for high-performance spintronic applications. In conventional SOT heterostructures with heavy metal (HM)/ferromagnet


  • Mater. Sci. 95, 263
  • 2014

Science 336

  • 555
  • 2012

Nature (London) 399

  • 756
  • 1999

Solid State Commun

  • 150, 1789
  • 2010

Physica 24

  • 39
  • 1958