Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 40, Issue 6, Pages 1544-1547Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/40/6/S05
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In this paper we investigate the surface spin polarization in a 100 nm Co2Cr0.6Fe0.4Al film grown ex situ epitaxially on MgO( 100) with a 10 nm Fe buffer layer by means of spin-resolved photoemission. We show that a careful in situ preparation of the sample surface leads to values for the room temperature spin polarization up to 45% at the Fermi level. To our knowledge, this is the highest value measured so far at the surface region of a full Heusler alloy at room temperature.
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