88 citations · 417 across the 13 of their papers we have counts for
10 papers · 1 filter
Structural and spin-glass properties of single crystal = 1/2 pyrochlore antiferromagnet NaCdCoF : correlating with magnetic-bond-disorder
Andrej Kancko, Gerald Giester, Ross H. Colman
Weak bond disorder disrupts the expected spin-liquid ground-state of the ideal = 1/2 Heisenberg pyrochlore antiferromagnet. Here we introduce a single crystal study of the stru…
Spin dynamics in the pyrochlore iridate, Er2Ir2O7, investigated by muSR spectroscopy
Ross H. Colman, Kristina Vlaskova, Adam Berlie +1
Building a full understanding of the complex magnetism in the rare-earth pyrochlore iridates, A2Ir2O7, is an ongoing issue in condensed matter physics. The possibility of two inter…
Spin dynamics and disorder effects in the S=1/2 kagome Heisenberg spin liquid phase of kapellasite
E. Kermarrec, A. Zorko, F. Bert +10
We report Cl NMR, ESR, SR and specific heat measurements on the frustrated kagomé magnet kapellasite, CuZn(OH)Cl, where a gapless spin liquid phas…
Exchange energies of Kapellasite from high-temperature series analysis of the kagome lattice J1-J2-Jd-Heisenberg model
B. Bernu, C. Lhuillier, E. Kermarrec +4
We present a method to build magnetic models for insulators based on high-temperature expansions by fitting both the magnetic susceptibility and the low temperature specific heat d…
Kapellasite: a kagome quantum spin liquid
B. Fåk, E. Kermarrec, L. Messio +11
Magnetic susceptibility, NMR, muSR, and inelastic neutron scattering measurements show that kapellasite, Cu3Zn(OH)6Cl2, a geometrically frustrated spin-1/2 kagome antiferromagnet p…
Spin Liquid Ground State in the Frustrated Kagome Antiferromagnet MgCu3(OH)6Cl2
E. Kermarrec, P. Mendels, F. Bert +6
We report muSR experiments on Mg{x}Cu{4-x}(OH)6Cl2 with x \sim 1, a new material isostructural to Herbertsmithite exhibiting regular kagome planes of spin 1/2 (Cu^{2+}), and theref…
Ground State and Intrinsic Susceptibility of the Kagome Antiferromagnet Vesignieite as seen by 51V NMR
J. A. Quilliam, F. Bert, R. H. Colman +3
The intrinsic magnetic susceptibility and local magnetization of the near-kagome quantum magnet vesignieite, Cu3BaV2O8(OH)2, are presented as measured using 51V NMR. The NMR line s…
Spin dynamics in the S =1/2 kagome compound vesignieite, Cu3Ba(VO5H)2
Ross H Colman, Fabrice Bert, David Boldrin +5
We report the study of high quality samples of the frustrated S = 1/2 kagome antiferromagnet vesignieite, Cu3Ba(VO5H)2. Neutron powder diffraction measurements evidence the high qu…
Low temperature magnetic structure of the quasi 1-dimensional magnet Ni2SiO4
R H Colman, T Fennell, C Ritter +3
Ni2SiO4, Liebenbergite, is an example of a quasi-one-dimensional magnet made up of frustrated corner sharing triangles of Ni2+ (S = 1) ions that propagate parallel to the b axis. N…
Toward Perfection: Kapellasite, Cu3Zn(OH)6Cl2, a New Model S = 1/2 Kagome Antiferromagnet
R. H. Colman, C. Ritter, A. S. Wills
The search for the resonating valence bond (RVB) state continues to underpin many areas of condensed matter research. The RVB is made from the dimerisation of spins on different si…