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Magneto-Dielectric Effect in the S = 1/2 Quasi-Two Dimensional Antiferromagnet K2V3O8
R. C. Rai, J. Cao, J. L. Musfeldt +6
We report the optical and magneto-optical properties of K2V3O8, an S=1/2 quasi-two-dimensional Heisenberg antiferromagnet. Local spin density approximation electronic structure cal…
Pressure dependence of magnetic and superconducting transitions in sodium cobalt oxides NaxCoO2
Y. V. Sushko, O. B. Korneta, S. O. Leontsev +3
The results of DC magnetization measurements under hydrostatic (helium-gas) pressure are reported for an ambient pressure superconductor Na0.35CoO2.1.4D2O and its precursor compoun…
Kondo Lattice Behavior in the Ordered Dilute Magnetic Semiconductor Yb_{14-x}La_xMnSb_{11}
B. C. Sales, P. Khalifah, T. P. Enck +4
We report Hall, magnetic, heat capacity and doping studies from single crystals of Yb_14MnSb_11 and Yb_13.3La_0.7MnSb_11. These heavily doped semiconducting compounds are ferromagn…
Optical study of interactions in a d-electron Kondo lattice with ferromagnetism
K. S. Burch, A. Schafgans, N. P. Butch +5
We report on a comprehensive optical, transport and thermodynamic study of the Zintl compound YbMnSb, demonstrating that it is the first ferromagnetic Kondo lattice c…
Magnetic excitations in weakly coupled spin dimers and chains material Cu2Fe2Ge4O13
T. Masuda, A. Zheludev, B. Sales +3
Magnetic excitations in a weakly coupled spin dimers and chains compound Cu2Fe2Ge4O13 are measured by inelastic neutron scattering. Both structure factors and dispersion of low ene…
Fermi surface evolution and Luttinger theorem in NaCoO: a systematic photoemission study
H. -B. Yang, Z. -H. Pan, A. K. P. Sekharan +9
We report a systematic angle-resolved photoemission study on NaCoO for a wide range of Na concentrations (). In all the metallic samples at different…