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Author Uemura, Y. J. ♦ Majkrzak, C. F. ♦ Shirane, G. ♦ Stassis, C. ♦ Aeppli, G. ♦ Batlogg, B. ♦ Remeika, J. P.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ CERIUM SILICIDES ♦ NEUTRON DIFFRACTION ♦ SPIN FLIP ♦ ZEEMAN EFFECT ♦ COPPER SILICIDES ♦ MAGNETIC FIELDS ♦ POLARIZED BEAMS ♦ ULTRALOW TEMPERATURE ♦ BEAMS ♦ CERIUM COMPOUNDS ♦ COHERENT SCATTERING ♦ COPPER COMPOUNDS ♦ DIFFRACTION ♦ RARE EARTH COMPOUNDS ♦ SCATTERING ♦ SILICIDES ♦ SILICON COMPOUNDS ♦ TRANSITION ELEMENT COMPOUNDS ♦ Materials- Properties
Abstract Polarized neutron scattering from the heavy-fermion system CeCu/sub 2/Si/sub 2/ has been measured in horizontal magnetic fields in the range 0--20 kG. The scattering due to the electron excitation from up (down) (relative to the magnetic field) spin states to the down (up) spin states has been observed separately at T = 2.5 K. The difference between intensities for the two opposite spin-flip processes, I/sub arrow-uparrow-down/-I/sub arrow-downarrow-up/, agrees well with the value expected for a narrow resonance of width (HWHM) GAMMAapprox.1 meV at the Fermi level. This work introduces a new way of determining the very small energy scales for spin fluctuations in heavy-fermion systems.
Educational Use Research
Learning Resource Type Article
Publisher Date 1986-05-01
Publisher Department Brookhaven National Laboratory, Upton, New York 11973
Publisher Place United States
Journal Phys. Rev. B: Condens. Matter
Volume Number 33
Issue Number 9
Organization Brookhaven National Laboratory, Upton, New York 11973


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