C. Baines
Paul Scherrer Institute
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Featured researches published by C. Baines.
Physical Review Letters | 2007
P. Mendels; F. Bert; M. A. de Vries; A. Olariu; Andrew Harrison; F. Duc; J.-C. Trombe; J.S. Lord; A. Amato; C. Baines
We report muon spin rotation measurements on the S=1/2 (Cu2+) paratacamite ZnxCu4-x(OH)6Cl2 family. Despite a Weiss temperature of approximately -300 K, the x=1 compound is found to have no transition to a magnetic frozen state down to 50 mK as theoretically expected for the kagomé Heisenberg antiferromagnet. We find that the limit between a dynamical and a partly frozen ground state occurs around x=0.5. For x=1, we discuss the relevance to a singlet picture.
Physical Review Letters | 2005
A. Yaouanc; P. Dalmas de Réotier; V. N. Glazkov; C. Marin; P. Bonville; J. A. Hodges; P.C.M. Gubbens; S. Sakarya; C. Baines
Using muon-spin-relaxation measurements we show that the pyrochlore compound Gd(2)Ti(2)O(7), in its magnetically ordered phase below approximately 1 K, displays persistent spin dynamics down to temperatures as low as 20 mK. The characteristics of the induced muon relaxation can be accounted for by a scattering process involving two magnetic excitations, with a density of states characterized by an upturn at low energy and a small gap depending linearly on the temperature. We propose that such a density of states is a generic feature of geometrically frustrated magnetic materials.
Physical Review B | 2001
G. A. Petrakovskii; K. S. Aleksandrov; L. N. Bezmaternikh; S. S. Aplesnin; B. Roessli; F. Semadeni; A. Amato; C. Baines; J. Bartolomé; Marco Evangelisti
Magnetic susceptibility, magnetization, specific heat and positive muon spin relaxation (musr) measurements have been used to characterize the magnetic ground-state of the spinel compound
Physical Review Letters | 2006
F. Bert; P. Mendels; A. Olariu; N. Blanchard; G. Collin; A. Amato; C. Baines; A. D. Hillier
rm CuGa_2O_4
Physical Review Letters | 2012
Jeffrey Quilliam; F. Bert; Edwin Kermarrec; C. Payen; Catherine Guillot-Deudon; P. Bonville; C. Baines; H. Luetkens; P. Mendels
. We observe a spin-glass transition of the S=1/2
Journal of Physics: Conference Series | 2009
F. Bert; A Olariu; A. Zorko; P. Mendels; J.-C. Trombe; F. Duc; M. A. de Vries; Andrew Harrison; A. D. Hillier; J.S. Lord; A. Amato; C. Baines
rm Cu^{2+}
Physical Review Letters | 2004
D. Bono; P. Mendels; G. Collin; N. Blanchard; F. Bert; A. Amato; C. Baines; A. D. Hillier
spins below
Physical Review Letters | 2016
P. Khuntia; F. Bert; P. Mendels; B. Koteswararao; A. V. Mahajan; M. Baenitz; F. C. Chou; C. Baines; A. Amato; Y. Furukawa
rm T_f=2.5K
Physical Review B | 2011
Steven Disseler; J. N Svensson; Sebastian C. Peter; C. P. Byers; C. Baines; A. Amato; Sean Giblin; P. Carretta; M.J. Graf
characterized by a cusp in the susceptibility curve which suppressed when a magnetic field is applied. We show that the magnetization of
Physica B-condensed Matter | 2000
V. N. Duginov; K. I. Gritsaj; A. Amato; C. Baines; Dieter M. Herlach; V. Yu. Pomjakushin; U. Zimmermann; A. N. Ponomarev; I. A. Krivosheev; A.A Nezhivoy; A.V. Gribanov; V.N. Nikiforov; Yu. D. Seropegin
rm CuGa_2O_4
