{ital k}-Space Origin of the Long-Period Oscillation in Fe{bold /}Cr Multilayers: A Photoemission Study of Epitaxial Cr Grown on an Fe(100) Whisker

Journal Article · Sat Feb 01 04:00:00 EST 1997 · Physical Review Letters

OSTI ID:450473

Vescovo, E ^[1]; Huang, D; Johnson, P ^[2]

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1. National Synchrotron Light Source, Brookhaven National Laboratory, Upton, New York 11973 (United States)
2. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)

The {ital k}-space origin of the long-period (18A) oscillation in the interlayer magnetic coupling of Fe/Cr(100) multilayers is investigated by means of angle-resolved photoemission by probing quantum well (QW) states at the Fermi energy for epitaxial Cr grown on an Fe(100) whisker at 300{degree}C. The periodicity of the intensity oscillations of the Cr QW states in the vicinity of the {ital d}-derived {open_quotes}lens{close_quote}{close_quote} feature of the Fermi surface is 17{plus_minus}2{Angstrom}. Thus the lens is identified as a prime candidate for the origin of the long period. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: Brookhaven National Laboratory
• DOE Contract Number: AC02-76CH00016; W-31109-ENG-38
• OSTI ID: 450473
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 6 Vol. 78; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHROMIUM
ELECTRONIC STRUCTURE
EPITAXY
FERMI LEVEL
IRON
LAYERS
OSCILLATIONS
PHOTOEMISSION
SYNCHROTRON RADIATION
WHISKERS