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Showing 2009 · cond-mat.mtrl-sciShow all

4 papers · 2 filters

cond-mat.mtrl-sci2009★ 50 cited

Monte Carlo Study of Mixed-Spin S=(1/2,1) Ising Ferrimagnets

W. Selke J. Oitmaa

We investigate Ising ferrimagnets on square and simple-cubic lattices with exchange couplings between spins of values S=1/2 and S=1 on neighbouring sites and an additional single-s…

cond-mat.mtrl-sci2009★ 14 cited

Effect of Electron-Electron Interactions on the Charge Carrier Transitions in trans-Polyacetylene

Haibo Ma, Ulrich Schollwoeck

By employing a newly developed dynamical simulation method, which is a combination of classical molecular dynamics (MD) and the adaptive time-dependent density matrix renormalizati…

cond-mat.mtrl-sci2009★ 27 cited

Magnetite: Raman study of the high-pressure and low-temperature effects

L. V. Gasparov, D. Arenas, K. -Y. Choi +6

We report the results of a low-temperature (300K-15K) high-pressure (up to 22GPa) Raman study of the Verwey transition in magnetite (Fe3O4). We use additional Raman modes observed…

cond-mat.mtrl-sci2009★ 8 cited

Electronic Raman scattering in Magnetite, Spin vs. Charge gap

L. Gasparov, A. Rush, G. Guntherodt +1

We report Raman scattering data of single crystals of magnetite (Fe3O4) with Verwey transition temperatures (Tv) of 123 and 117K, respectively. Both single crystals reveal broad el…