V. A. Ivan'shin, L. K. Aminov, I. N. Kurkin, J. Sichelschmidt, O. Stockert, J. Ferstl, G. Geibel, “Electron paramagnetic resonance of Yb$^{3+}$ ions in a concentrated YbRh${_2}$Si${_2}$ compound with heavy fermions”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2003, Volume 77, Issue 9,Pages 625

This article is cited in 19 papers

Electron paramagnetic resonance of Yb$^{3+}$ ions in a concentrated YbRh${_2}$Si${_2}$ compound with heavy fermions

V. A. Ivan'shin^ab, L. K. Aminov^a, I. N. Kurkin^a, J. Sichelschmidt^b, O. Stockert^b, J. Ferstl^b, G. Geibel^b

^a Faculty of Physics, Kazan State University
^b Max Planck Institute for Chemical Physics of Solids

Abstract: The EPR signal from localized ytterbium ions was observed in an undoped YbRh${_2}$Si${_2}$ compound with heavy fermions in the temperature range from 1.5 to 25 K. The exponential contribution dominating the temperature dependence of EPR line width at temperatures above 15 K was shown to be caused by the random transitions from the ground to the first excited Stark sublevel of the Yb$^{3+}(4f^{13}$) ion with the activation energy $\Delta=115\,$K.

PACS: 71.27.+a, 75.20.Hr, 76.30.-v

Received: 10.04.2003