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Title: Magnetic coupling at perovskite and rock-salt structured interfaces

We study magnetic coupling between hole-doped manganite layers separated by either a perovskite or a rock-salt barrier of variable thickness. Both the type and the quality of the interface have a strong impact on the minimum critical barrier thickness where the manganite layers become magnetically decoupled. A rock-salt barrier layer only 1 unit cell (0.5 nm) thick remains insulating and is able to magnetically de-couple the electrode layers. The technique can therefore be used for developing high-performance planar oxide electronic devices such as magnetic tunnel junctions and quantum well structures that depend on magnetically and electronically sharp heterointerfaces.
Authors:
 [1] ;  [2] ;  [3] ; ;  [1]
  1. Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, 277-8581 Chiba (Japan)
  2. (Finland)
  3. Department of Chemistry, Aalto University, Kemistintie 1, 02150 Espoo (Finland)
Publication Date:
OSTI Identifier:
22482198
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 14; Other Information: (c) 2015 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; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; DEPLETION LAYER; ELECTRODES; ELECTRONIC EQUIPMENT; INTERFACES; OXIDES; PEROVSKITE; QUANTUM WELLS; SALT DEPOSITS; THICKNESS; TUNNEL EFFECT