skip to main content

Title: Magnetic and transport properties of Mn{sub 2}CoAl oriented films

The structure, magnetic, and transport properties of thin films of the Heusler ferrimagnet Mn{sub 2}CoAl have been investigated for properties related to spin gapless semiconductors. Oriented films were grown by molecular beam epitaxy on GaAs substrates and the structure was found to transform from tetragonal to cubic for increasing annealing temperature. The anomalous Hall resistivity is found to be proportional to the square of the longitudinal resistivity and magnetization expected for a topological Berry curvature origin. A delicate balance of the spin-polarized carrier type when coupled with voltage gate-tuning could significantly impact advanced electronic devices.
Authors:
; ; ;  [1]
  1. Department of Physics, Northeastern University, Boston, Massachusetts 02115 (United States)
Publication Date:
OSTI Identifier:
22217942
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 14; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM ALLOYS; ANNEALING; COBALT ALLOYS; ELECTRIC POTENTIAL; ELECTRONIC EQUIPMENT; FERRIMAGNETIC MATERIALS; GALLIUM ARSENIDES; LAYERS; MAGNETIC SEMICONDUCTORS; MAGNETIZATION; MAGNETORESISTANCE; MANGANESE ALLOYS; MOLECULAR BEAM EPITAXY; SPIN; SPIN ORIENTATION; THIN FILMS; TOPOLOGY