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Infrared study of neodymium–copper exchange interaction in Nd2CuO4 by S Jandl; P Richard; V Nekvasil; D.I Zhigunov; S.N Barilo; S.V Shiryaev is a Physics and Astronomy article available to read on EtoBox.

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We present an infrared transmission study of Nd CuO Kramers doublets as a function of temperature and polarization. 2 4 Lifting of the J s 9r2, 11r2, 13r2 and 15r2 Kramers doublets degeneracies of the order of few cm y1 is observed which we ascribe to the exchange coupling of the Nd spins to the Cu subsystem. In particular, we show that the doublet splittings data retrace the Nd CuO spin reorientation transitions and imply that the Nd-Cu coupling is strongly anisotropic. This 2 4 finding supports a model used earlier to interpret the spin reorientation transitions as well as the spin-wave excitation gap data.

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Author

S Jandl; P Richard; V Nekvasil; D.I Zhigunov; S.N Barilo; S.V Shiryaev

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0921-4534)

Published

1999

Language

EN

Field

Physics and Astronomy (Physical Sciences)