Direct measurement of the splitting of crystal-field levels in the magnetically ordered state in NdNi5by point-contact spectroscopy

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1999 EDP Sciences
, , Citation M. Reiffers et al 1999 EPL 45 520 DOI 10.1209/epl/i1999-00197-2

0295-5075/45/4/520

Abstract

The measured point-contact spectra (directly proportional to the electron-quasi particle interaction function) of the heterocontact between oriented hexagonal single crystal of ferromagnetic NdNi5 and Cu in ballistic and thermal regime are presented above and below TC. At TC = 7 K maxima observed at characteristic energies around 1.5 and 4 meV are of crystal field (CEF) origin. Below TC the splitting of CEF levels by the exchange field is observed. This splitting is consistent with CEF and exchange parameters previously determined.

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10.1209/epl/i1999-00197-2