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Characteristic energy scales in CePdAl
Author(s) -
Woitschach Sarah,
Stockert Oliver,
Koza Michael Marek,
Fritsch Veronika,
von Löhneysen Hilbert,
Steglich Frank
Publication year - 2013
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201200922
Subject(s) - antiferromagnetism , condensed matter physics , quasielastic neutron scattering , inelastic neutron scattering , excited state , physics , quasielastic scattering , inelastic scattering , spin (aerodynamics) , quantum critical point , scattering , atomic physics , quantum mechanics , quantum phase transition , phase transition , thermodynamics
We report on inelastic neutron scattering experiments that were carried out on single‐crystalline CePdAl, which is a heavy fermion system with hexagonal crystal structure and is close to an antiferromagnetic quantum critical point. The measurements yield information on the crystalline‐electric‐field (CEF) excitations and quasielastic spin fluctuations. Two excited CEF levels have been detected at ≈240 K and >400 K. A broad quasielastic magnetic signal could be observed, yielding a Kondo temperature T K = 5 K that agrees with the result from thermodynamic measurements.