skip to main content

SciTech ConnectSciTech Connect

Title: Time-resolved observation of fast domain-walls driven by vertical spin currents in short tracks

We present time-resolved measurements of the displacement of magnetic domain-walls (DWs) driven by vertical spin-polarized currents in track-shaped magnetic tunnel junctions. In these structures, we observe very high DW velocities (600 m/s) at current densities below 10{sup 7} A/cm{sup 2}. We show that the efficient spin-transfer torque combined with a short propagation distance allows avoiding the Walker breakdown process and achieving deterministic, reversible, and fast (≈1 ns) DW-mediated switching of magnetic tunnel junction elements, which is of great interest for the implementation of fast DW-based spintronic devices.
Authors:
; ; ; ;  [1] ;  [1] ;  [2] ; ; ; ; ;  [3] ; ; ; ;  [4]
  1. Unité Mixte de Physique CNRS/Thales and Université Paris-Sud 11, 1 Ave. A. Fresnel, 91767 Palaiseau (France)
  2. (Australia)
  3. National Institute of Advanced Industrial Science and Technology (AIST) 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568 (Japan)
  4. Process Development Center, Canon ANELVA Corporation, Kurigi 2-5-1, Asao, Kawasaki, Kanagawa 215-8550 (Japan)
Publication Date:
OSTI Identifier:
22253796
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 24; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BREAKDOWN; CURRENT DENSITY; DISTANCE; DOMAIN STRUCTURE; EQUIPMENT; SPIN; SPIN ORIENTATION; SUPERCONDUCTING JUNCTIONS; TIME RESOLUTION; TUNNEL EFFECT