Benjamin Geisler

Spincaloric properties of epitaxialCo2MnSi/MgO/Co2MnSimagnetic tunnel junctions

The electronic transport and spincaloric properties of epitaxial magnetic tunnel junctions with half-metallic Co

Design of n - and p -type oxide thermoelectrics in LaNiO3/SrTiO3(001) superlattices exploiting interface polarity

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Interplay of growth mode and thermally induced spin accumulation in epitaxialAl/Co2TiSi/AlandAl/Co2TiGe/Alcontacts

MnSi Heusler electrodes, MgO tunneling barriers, and different interface terminations are investigated by using first-principles calculations. A new approach to spincaloric properties is presented that circumvents the linear response approximation inherent in the Seebeck coefficient and compared to the method of Sivan and Imry. This approach supports two different temperatures in the two electrodes and provides the exact current and/or voltage response of the system. Moreover, it accounts for temperature-dependent chemical potentials in the electrodes and finite-bias effects. We find that especially the former are important for obtaining qualitatively correct results, even if the variations of the chemical potentials are small. It is shown how the spincaloric properties can be tailored by the choice of the growth conditions. We find a large effective and spin-dependent Seebeck coefficient of

Atomic-scale detection of magnetic impurity interactions in bulk semiconductors

-65

First-principles study of spin-dependent thermoelectric properties of half-metallic Heusler thin films between platinum leads

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Surface morphology of MnSi thin films grown on Si(111)

V/K at room temperature for the purely Co-terminated interface. We suggest to use such interfaces in thermally operated magnetoresistive random access memory modules, which exploit the magneto-Seebeck effect, to maximize the thermally induced readout voltage.

Electronic, magnetic and transport properties of full and half-metallic thin film Heusler alloys

We investigate the structural, electronic, transport, and thermoelectric properties of LaNiO

Design of n - and p -type thermoelectrics in oxide superlattices exploiting interface polarity

_3

Thermally induced spin accumulation at Al/Co

/SrTiO