Magnetic and electrical properties of dhcp NpPd3 and U(1-x)Np(x)Pd3 (2009)
Walker, H. C., McEwen, K. A., Boulet, P., Colineau, E., Rebizant, J., ...
We have made an extensive study of the magnetic and electrical properties of double-hexagonal closepacked NpPd3 and a range of U(1-x)Np(x)Pd3 compounds with x=0.01, 0.02, 0.05, and 0.50 using...
Photoelectron spectroscopy of NpPd3 and PuPd3 (2008)
Le, M.D., Walker, H.C., McEwen, K.A., Gouder, T., Huber, F., Wastin, F.
We present the results of x-ray and ultraviolet photoelectron spectroscopy of NpPd3 and PuPd3. The spectra indicate that for both compounds, the 5f electrons are well localized on the actinide sites....
Magnetic excitations in the ordered phases of praseodymium hexaboride (2008)
Le, M.D., McEwen, K.A., Lee, S., Iga, F., Rule, K.C.
We have made the first inelastic neutron scattering measurements on single crystal PrB6, studying the magnetic excitations in the ordered phases. The lowest energy mode has a minimum energy of ≈1.0...
Understanding the quadrupolar structures of UPd3UPd3 (2007)
McEwen, K.A., Walker, H.C., Le, M.D., McMorrow, D.F., Colineau, E., Wastin, F., ...
UPd3 exhibits four phase transitions below T0 = 7.8 K, attributed to a succession of antiferroquadrupolar (AFQ) orderings of the 5f2 uranium ions localised on the quasi-cubic sites of the dhcp...
Determination of the antiferroquadrupolar order parameters in UPd3 (2006)
Walker, H.C., McEwen, K.A., McMorrow, D.F., Wilkins, S.B., Wastin, F., Colineau, E., ...
By combining accurate heat capacity and x-ray resonant scattering results we have resolved the long standing question regarding the nature of the quadrupolar ordered phases in UPd3. The order...
Lee, S., Adroja, D.T., Khomskii, D., Streltsov, S., McEwen, K.A., ...
Dimensionality is one of the most important parameters of physical phenomena. Only two things determine the universality class of a phase transition: the dimensionality of a given system and the...
Multiple magnetic singlet-singlet excitations in intermetallic PrNiSn (2006)
McEwen, K.A., Jensen, J., Beirne, E.D., Allen, J.P., Habicht, K., Adroja, D.T.
Inelastic neutron-scattering experiments have been carried out on a polycrystalline sample of PrNiSn, and seven of the eight excited crystal-field singlets of the Pr ions were detected. The system...
Inelastic neutron scattering and heat capacity studies of Ferromagnetic PrInNi4 (2006)
Walker, HC, McEwen, K A, Adroja, D T, Park, J-G, Kwon, YS, So, J-Y, ...
Influence of the crystal field potential on the superconducting properties of PrRU4Sb12 (2005)
Adroja, D.T., Park, J.G., Goremychkin, E.A., Takeda, N., Ishikawa, M., McEwen, K.A., ...
We have determined the crystal field potential of the superconductor PrRu4Sb12 View the MathML sourceusing inelastic neutron scattering. The ground state of the Pr+3 ions in Th point group symmetry...
Inelastic neutron scattering studies of doped CeNiSn and CeRhSb: crystal-field (2005)
So, J-Y, Park, J-G, Adroja, D T, McEwen, K A, Takabatake, T, Oh, S-J
Study of hybridization gap in the Kondo insulator CeRhAs through inelastic neutron scattering (2005)
Adroja, D T, Park, J-G, McEwen, K A, Shigetoh, K, Sasakawa, T, Takabatake, T, ...
Coupling of lattice and spin degrees of freedom in GdB6 (2004)
McMorrow, D F, McEwen, K A, Park, J G, Lee, S, Mannix, D, Iga, F, ...
A new model for the crystal field and the quadrupolar phase transitions of UPd3 (2003)
McEwen, K.A., Gipson, A.J., Gehring, G.A.
The double-hexagonal close-packed localized moment 5f system UPd3 exhibits four phase transitions below 8 K. We present new measurements of the magnetic susceptibility of UPd3 single crystals. The...
X-ray resonant scattering study of the quadrupolar order in UPd3 (2001)
McMorrow, D. F., McEwen, K. A., Steigenberger, U., Ronnow, H. M., Yakhou, F.
Quadrupolar ordering in a 5f electron system has been observed directly for the first time, using x-ray scattering techniques. In UPd3 at low temperatures satellite peaks appear at (1, 0, l)...