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Title: Detrimental effect of interfacial Dzyaloshinskii-Moriya interaction on perpendicular spin-transfer-torque magnetic random access memory

Interfacial Dzyaloshinskii-Moriya interaction in ferromagnet/heavy metal bilayers is recently of considerable interest as it offers an efficient control of domain walls and the stabilization of magnetic skyrmions. However, its effect on the performance of perpendicular spin transfer torque memory has not been explored yet. We show based on numerical studies that the interfacial Dzyaloshinskii-Moriya interaction decreases the thermal energy barrier while increases the switching current. As high thermal energy barrier as well as low switching current is required for the commercialization of spin torque memory, our results suggest that the interfacial Dzyaloshinskii-Moriya interaction should be minimized for spin torque memory applications.
Authors:
;  [1] ; ;  [2] ;  [1] ;  [3]
  1. Department of Materials Science and Engineering, Korea University, Seoul 136-713 (Korea, Republic of)
  2. KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 136-713 (Korea, Republic of)
  3. (Korea, Republic of)
Publication Date:
OSTI Identifier:
22486091
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 20; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CONTROL; CURRENTS; DIFFUSION BARRIERS; HEAVY METALS; INTERACTIONS; LAYERS; NUMERICAL ANALYSIS; PERFORMANCE; RANDOMNESS; SKYRME POTENTIAL; SOLITONS; SPIN; STABILIZATION