297 citations · 978 across the 22 of their papers we have counts for
16 papers · 1 filter
Realistic modelling of transport properties at finite temperature in magnetic materials by local quantization of a Heisenberg model
Fabian Engelke, Christian Heiliger
The quantitative description of the electrical resistivity of a magnetic material remains challenging to this day. Qualitatively, it is well understood that the temperature-induced…
Circular photogalvanic effects in topological insulator/ferromagnet hybrid structures
T. Schumann, T. Kleinke, L. Braun +12
We study laser driven spin-current effects at ferromagnet/topological-insulator interfaces by two complementary experimental approaches. The DC photocurrent is studied in ferromagn…
Tunnel magneto-Seebeck effect
Timo Kuschel, Michael Czerner, Jakob Walowski +5
The interplay of charge, spin and heat transport is investigated in the fascinating research field of spin caloritronics, the marriage of spintronics and thermoelectrics. Here, man…
Coherent ultrafast spin-dynamics probed in three dimensional topological insulators
F. Boschini, M. Mansurova, G. Mussler +12
Topological insulators are candidates to open up a novel route in spin based electronics. Different to traditional ferromagnetic materials, where the carrier spin-polarization and…
Thermal transport and non-equilibrium temperature drop across a magnetic nanostructured interface
Jia Zhang, Michael Bachman, Michael Czerner +1
In a number of current experiments in the field of spin-caloritronics a temperature gradient across a nanostructured interface is applied and spin-dependent transport phenomena are…
On/off switching of bit readout in bias-enhanced tunnel magneto-Seebeck effect
Alexander Boehnke, Marius Milnikel, Marvin Walter +8
Thermoelectric effects in magnetic tunnel junctions are currently an attractive research topic. Here, we demonstrate that the tunnel magneto-Seebeck effect (TMS) in CoFeB/MgO/CoFeB…
Unusual angular dependence of tunneling magneto-Seebeck effect
Christian Heiliger, Michael Czerner, Niklas Liebing +4
We find an unusual angular dependence of the tunneling magneto-Seebeck effect (TMS). The conductance shows normally a cosine-dependence with the angle between the magnetizations of…
Thermal spin-transfer torque in magnetic tunnel junctions
Christian Heiliger, Michael Czerner
The thermal spin-transfer torque (TSTT) is an effect to switch the magnetic free layer in a magnetic tunnel junction by a temperature gradient only. We present ab initio calculatio…
Influence of the magnetic material on tunneling magnetoresistance and spin-transfer torque in tunnel junctions: Ab initio studies
Christian Franz, Michael Czerner, Christian Heiliger
The dependence of tunneling magnetoresistance and spin-transfer torque in FeCo/MgO/FeCo tunnel junctions on the Co concentration and the bias voltage are investigated ab initio. We…
Implementation of non-equilibrium vertex corrections in KKR: transport through disordered layers
Christian Franz, Michael Czerner, Christian Heiliger
The theoretical description of modern nanoelectronic devices requires a quantum mechanical treatment and often involves disorder, e.g. form alloys. Therefore, the ab initio theory…
Ab initio studies of the tunneling magneto-Seebeck effect: influence of magnetic material
Christian Heiliger, Christian Franz, Michael Czerner
We found a strong influence of the composition of the magnetic material on the temperature dependence of the tunneling magneto-Seebeck effect in based tunnel junctions. We us…
Parameter space for thermal spin-transfer torque
Johannes Christian Leutenantsmeyer, Marvin Walter, Vladyslav Zbarsky +10
Thermal spin-transfer torque describes the manipulation of the magnetization by the application of a heat flow. The effect has been calculated theoretically by Jia et al. in 2011.…
Spin caloritronics in magnetic tunnel junctions: Ab initio studies
Michael Czerner, Michael Bachmann, Christian Heiliger
This Letter presents ab initio calculations of the magneto-thermoelectric power (MTEP) and of the spin-Seebeck coefficient in MgO based tunnel junctions with Fe and Co leads. In ad…
Bias dependence of magnetic exchange interactions: application to interlayer exchange coupling in spin valves
Paul M. Haney, Christian Heiliger, Mark D. Stiles
We study how a bias voltage changes magnetic exchange interactions. We derive a general expression for magnetic exchange interactions for systems coupled to reservoirs under a bias…
Ab initio studies of the spin-transfer torque in tunnel junctions
Christian Heiliger, M. D. Stiles
We calculate the spin-transfer torque in Fe/MgO/Fe tunnel junctions and compare the results to those for all-metallic junctions. We show that the spin-transfer torque is interfacia…
Implementation of a non-equilibrium Green's function method to calculate spin transfer torque
Christian Heiliger, Michael Czerner, Bogdan Yu. Yavorsky +2
We present an implementation of the steady state Keldysh approach in a Green's function multiple scattering scheme to calculate the non-equilibrium spin density. This density is us…