Experimental evidences of a large extrinsic spin Hall effect in AuW alloy

Journal Article · Mon Apr 07 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4870835· OSTI ID:22261577

Laczkowski, P.; Rojas-Sánchez, J. -C. ^[1]; Savero-Torres, W.; Notin, L.; Beigné, C.; Marty, A.; Attané, J. -P.; Vila, L. ^[2]; Jaffrès, H.; Reyren, N.; Deranlot, C.; George, J. -M.; Fert, A. ^[1]

---

1. Unité Mixte de Physique CNRS/Thales and Université Paris-Sud 11, 91767 Palaiseau (France)
2. INAC/SP2M, CEA-Université Joseph Fourier, F-38054 Grenoble (France)

We report an experimental study of a gold-tungsten alloy (7 at. % W concentration in Au host) displaying remarkable properties for spintronics applications using both magneto-transport in lateral spin valve devices and spin-pumping with inverse spin Hall effect experiments. A very large spin Hall angle of about 10% is consistently found using both techniques with the reliable spin diffusion length of 2 nm estimated by the spin sink experiments in the lateral spin valves. With its chemical stability, high resistivity, and small induced damping, this AuW alloy may find applications in the nearest future.

• OSTI ID: 22261577
• Journal Information: Applied Physics Letters, Vol. 104, Issue 14; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DIFFUSION LENGTH
GOLD
HALL EFFECT
SPIN
TUNGSTEN ALLOYS