Hyperfine fields in an Ag/Fe multilayer film investigated with Li-8 beta-detected NMR

Keeler  TA; Salman  Z; Chow  KHHeinrich  BHossian  MDKardasz  BKiefl  RFKreitzman  SRLevy  CDPMacFarlane  WA

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Hyperfine fields in an Ag/Fe multilayer film investigated with Li-8 beta-detected NMR

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摘要

Low-energy beta-detected nuclear magnetic resonance was used to investigate the spatial dependence of the hyperfine magnetic fields induced by Fe in the nonmagnetic Ag of an Au(40 A)/Ag(200 A)/Fe(140 angstrom) (001) magnetic multilayer grown on GaAs. The resonance line shape in the Ag layer shows dramatic broadening compared to that of intrinsic Ag. This broadening is attributed to large magnetic fields induced in this layer by the magnetic Fe layer. We find that the induced hyperfine field in the Ag follows a power law decay away from the Ag/Fe interface with power -1.93(8), and a field extrapolated to 0.23(5) T at the interface.

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《Physical review, B. Condensed matter and materials physics》 |2008年第14期|144429-1-144429-5-0|共5页
作者
Keeler TA; Salman Z; Chow KHHeinrich BHossian MDKardasz BKiefl RFKreitzman SRLevy CDPMacFarlane WA;
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作者单位

Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada;

TRIUMF, Vancouver, BC V6T 2A3, Canada;

Univ Alberta, Dept Phys, Edmonton, AB T6G 2G7, CanadaSimon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, CanadaUniv British Columbia, Dept Chem, Vancouver, BC V6T 1Z1, Canada;

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正文语种英语
中图分类固体物理学;
关键词
SPIN POLARIZATION; RANGE FUNCTION; EXCHANGE; LAYERS; FE; TRILAYERS; AG; SUPERLATTICES; OSCILLATIONS; GAAS;

Hyperfine fields in an Ag/Fe multilayer film investigated with Li-8 beta-detected NMR

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