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Your search keyword '"Mertig I"' showing total 7 results
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7 results on '"Mertig I"'

1. Low-field switching of noncollinear spin texture at La0.7Sr0.3MnO3-SrRuO3 interfaces

Author

Das, S., Rata, A. D., Maznichenko, I., V, Agrestini, I. S., Pippel, E., Gauquelin, Nicolas, Verbeeck, Johan, Chen, K., Valvidares, S. M., Vasili, H. Babu, Herrero-Martin, J., Pellegrin, E., Nenkov, K., Herklotz, A., Ernst, A., Mertig, I, Hu, Z., and Doerr, K.

Subjects
Physics
Abstract

Interfaces of ferroic oxides can show complex magnetic textures which have strong impact on spintronics devices. This has been demonstrated recently for interfaces with insulating antiferromagnets such as BiFeO3. Here, noncollinear spin textures which can be switched in very low magnetic field are reported for conducting ferromagnetic bilayers of La0.7Sr0.3MnO3-SrRuO3 (LSMO-SRO). The magnetic order and switching are fundamentally different for bilayers coherently grown in reversed stacking sequence. The SRO top layer forms a persistent exchange spring which is antiferromagnetically coupled to LSMO and drives switching in low fields of a few milliteslas. Density functional theory reveals the crucial impact of the interface termination on the strength of Mn-Ru exchange coupling across the interface. The observation of an exchange spring agrees with ultrastrong coupling for the MnO2/SrO termination. Our results demonstrate low-field switching of noncollinear spin textures at an interface between conducting oxides, opening a pathway for manipulating and utilizing electron transport phenomena in controlled spin textures at oxide interfaces.

Published
2019

2. Scattering anisotropy and giant magnetoresistance in magnetic multilayers

Author

Binder, J., Zahn, P., and Mertig, I.

Subjects
Thin films, Multilayered -- Research, Physics
Abstract

Calculations of giant magnetoresistance in Co/Cu (001) multilayers have been obtained. It was found that the lifetimes of the electronic stats that arise as a result of the impurity scattering are extremely anisotropic, with the lifetimes differing by several orders of magnitude.

Published
2001

3. Ab inito calculations of giant magnetoresistance

Author

Binder, J., Zahn, P., and Mertig, I.

Subjects
Density functionals -- Research, Electron configuration -- Research, Magnetoresistance -- Research, Physics
Abstract

Ab initio calculations of the giant magnetoresistance in magnetic multilayers are presented. The electronic structure of the muyltilayers is calculated by spin density functional theory using a screened Korringa-Kohn-Rostoker method.

Published
2000

4. Electronic structure of the organic semiconductor copper phthalocyanine: Experiment and theory.

Author

Aristov, V. Yu., Molodtsova, O. V., Maslyuk, V. V., Vyalikh, D. V., Zhilin, V. M., Ossipyan, Yu. A., Bredow, T., Mertig, I., and Knupfer, M.

Subjects
PHTHALOCYANINES, COPPER compounds, ELECTRONIC structure, CHEMISTRY, PHYSICS
Abstract

The electronic structure of the organic semiconductor copper-phthalocyanine (CuPc) has been determined by a combination of conventional and resonant photoemission, near-edge x-ray absorption, as well as by the first-principles calculations. The experimentally obtained electronic valence band structure of CuPc is in very good agreement with the calculated density of states results, allowing the derivation of detailed site specific information. [ABSTRACT FROM AUTHOR]

Published
2008
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5. Physical origin of the incommensurate spin spiral structure in [Mn.sub.3]Si

Author

Hortmani, M., Sandratskii, L., Zahn, P., and Mertig, I.

Subjects
Antiferromagnetism -- Analysis, Magnetic moment -- Evaluation, Manganese alloys -- Magnetic properties, Manganese alloys -- Electric properties, Physics
Abstract

First-principles study is used for analyzing the magnetic structure of [Mn.sub.3]Si, where the Mn atoms have formed two sublattices. The competition between the direct antiferromagentic interaction of the [Mn.sub.1] magnetic moments and indirect ferromagnetic interaction of the same moments is strongly volume dependent and has led to volume dependence of the wave vector of the spin spiral.

Published
2009

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