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48 papers · 2 filters
Inelastic neutron scattering study of phonon density of states in nanostructured Si1xGex thermoelectrics
Chetan Dhital, D. L. Abernathy, Gaohua Zhu +3
Inelastic neutron scattering measurements are utilized to explore relative changes in the generalized phonon density of states of nanocrystalline Si1xGex thermoelectric materials p…
Windowed Carbon Nanotubes for Efficient CO2 Removal from Natural Gas
Hongjun Liu, Valentino R. Cooper, Sheng Dai +1
We demonstrate from molecular dynamics simulations that windowed carbon nanotubes can efficiently separate CO2 from the CO2/CH4 mixture, resembling polymeric hollow fibers for gas…
Successive magnetic phase transitions and multiferroicity in Spin-1 triangular lattice antiferromagnet BaNiNbO
J. Hwang, E. S. Choi, F. Ye +4
We report the magnetic and electric properties of BaNiNbO, which is a quasi-two-dimensional spin-1 triangular lattice antiferromagnet (TLAF) with trigonal structure. At…
High three dimensional thermoelectric performance from low dimensional bands
David Parker, Xin Chen, David J. Singh
Reduced dimensionality has long been regarded as an important strategy for increasing thermoelectric performance, for example in superlattices and other engineered structures. Here…
Dynamics of a first order electronic phase transition in manganites
T. Z. Ward, Z. Gai, H. W. Guo +2
By reducing an electronically phase separated manganite (La[1-y]Pr[y])[x]Ca[1-x]MnO3 single crystal thin film to dimensions on the order of the inherent phase domains, it is possib…
Diffusion quantum Monte Carlo study of the equation of state and point defects in aluminum
Randolph Q. Hood, P. R. C. Kent, Fernando A. Reboredo
The many-body diffusion quantum Monte Carlo (DMC) method with twist-averaged boundary conditions is used to calculate the ground-state equation of state and the energetics of point…