Antiferromagnetic Ordering on CoO(001) Studied by Metastable Helium Beam Diffraction
Banerjee, P. · Liu, X. · Farzaneh, M. · Willis, C. R. · Franzen, W. · El-Batanouny, M. · Staemmler, V.
Original · EN
Magnetic diffractive scattering of coherent metastable helium atomic beams from CoO(001) surfaces reveal the presence of an anomalous enhancement in the intensity of the half-order antiferromagnetic diffraction peak over the temperature range of 250-320K. Electronic cluster calculations based on Hartree-Fock states with configuration interactions, together with mean-field and Monte Carlo studies of this system suggest that this behavior is associated with low-lying surface spin excited states.
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