998 citations · 1.3k across the 9 of their papers we have counts for
9 papers
Critical mode and band-gap-controlled bipolar thermoelectric properties of SnSe
I. Loa, S. R. Popuri, A. D. Fortes +1
The reliable calculation of electronic structures and understanding of electrical properties depends on an accurate model of the crystal structure. Here, we have reinvestigated the…
Atomic Ordering in Cubic Bismuth Telluride Alloy Phases at High Pressure
I. Loa, J. -W. G. Bos, R. A. Downie +1
Pressure-induced transitions from ordered intermetallic phases to substitutional alloys to semi-ordered phases were studied in a series of bismuth tellurides. Using angle-dispersiv…
Structural Changes in Thermoelectric SnSe at High Pressures
I Loa, R J Husband, R A Downie +2
The crystal structure of the thermoelectric material tin selenide has been investigated with angle-dispersive synchrotron x-ray powder diffraction under hydrostatic pressure up to…
Glass-like thermal conductivity in SrTiO3 thermoelectrics induced by A-site vacancies
S. R. Popuri, A. J. M. Scott, R. A. Downie +5
The introduction of A-site vacancies in SrTiO3 results in a glass-like thermal conductivity while Nb substituted samples maintains good electrical conductivity. This unexpected res…
Inelastic neutron scattering study of crystal field excitations of Nd3+ in NdFeAsO
Y. Xiao, M. Zbiri, R. A. Downie +3
Inelastic neutron scattering experiments were performed to investigate the crystalline electric field (CEF) excitations of Nd3+ (J = 9/2) in the iron pnictide NdFeAsO. The crystal…
Iron spin-reorientation transition in NdFeAsO
A. Marcinkova, T. C. Hansen, J. W. G. Bos
The low-temperature magnetic structure of NdFeAsO has been revisited using neutron powder diffraction and symmetry analysis using the Sarah representational analysis program. Four…
Phase Stability, Structures and Properties of the (Bi2)m(Bi2Te3)n Natural Superlattices
J. -W. G. Bos, F. Faucheux, R. A. Downie +1
The phase stability of the (Bi2)m(Bi2Te3)n natural superlattices has been investigated through the low temperature solid state synthesis of a number of new binary BixTe1-x composit…
Direct evidence for the magnetic ordering of Nd ions in NdFeAsO by high resolution inelastic neutron scattering
T. Chatterji, G. N. Iles, B. Frick +2
We investigated the low energy excitations in the parent compound NdFeAsO of the Fe-pnictide superconductor in the eV range by a back scattering neutron spectrometer. The energy…
Superconductivity in Cu_xTiSe_2
E. Morosan, H. W. Zandbergen, B. S. Dennis +6
Charge density waves (CDWs) are periodic modulations of the conduction electron density in solids. They are collective states that arise from intrinsic instabilities often present…