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13 papers · 2 filters
Colossal electroresistance and colossal magnetoresistive step in paramagnetic insulating phase of single crystalline bilayered manganite(LaPr)SrMnO
Y. Yamato, M. Matsukawa, R. Suryanarayanan +5
We report a significant decrease in the low-temperature resistance induced by the application of an electric current on the -plane in the paramagnetic insulating (PMI) state of…
Possible d0 ferromagnetism in MgO doped with nitrogen
Bo Gu, Nejat Bulut, Timothy Ziman +1
We study the possibility of d0 ferromagnetism in the compound MgO doped with nitrogen (N). The Haldane-Anderson impurity model is formulated within the tight-binding approximation…
Spin susceptibility and effective mass of two-dimensional electrons in MgxZn1-xO/ZnO heterostructures
A. Tsukazaki, A. Ohtomo, M. Kawasaki +9
We report measurements of the spin susceptibility and the electron effective mass for two-dimensional electrons confined at the interfaces of MgxZn1-xO/ZnO single heterostructures…
Room Temperature Ferromagnetic Semiconductor Rutile Ti1-xCoxO2-δEpitaxial Thin Films Grown by Sputtering Method
Takashi Yamasaki, Tomoteru Fukumura, Masaki Nakano +2
Room temperature ferromagnetic semiconductor rutile Ti1-xCoxO2-δ(101) epitaxial thin films were grown on r-sapphire substrates by a dc sputtering method. Ferromagnetic magnetizatio…
Determination of exchange constants of Heusler compounds by Brillouin light scattering spectroscopy: application to CoMnSi
J. Hamrle, O. Gaier, Seong-Gi Min +3
Brillouin light scattering spectroscopy from so-called standing spin waves in thin magnetic films is often used to determine the magnetic exchange constant. The data analysis of th…
Polarization Rotation, Switching and E-T phase diagrams of BaTiO: A Molecular Dynamics Study
Jaita Paul, Takeshi Nishimatsu, Yoshiyuki Kawazoe +1
We use molecular dynamics simulations to understand the mechanisms of polarization switching in ferroelectric BaTiO achieved with external electric field. For tetragonal and or…