Bachelor, Master, PhD

Full list with pdf documents of library Uni Greifswald more ...
 

Ongoing

starting 2026

Niklas Dornquast, Laser driven nanooscillator frequency combs, University of Greifswald
 

since 2025    

Kevin Jäckel, Ultrafast dynamics in Altermagnets, University of Greifswald

since 2022    

Hauke Heyen, Skyrmion super diffusion and topological Hall and Nernst effects, University of Greifswald

Tristan Winkel, Spintronics with THz emitters (not ended because of illness)   (2021 – 2025 )

2025

Marcel Kohlmann, All-Optical Helicity-Dependent Switching of FePt Granular Media, University of Greifswald (2021 – 2025)

All-optical helicity-dependent magnetization switching (AO-HDS) is a promising technique for data recording utilizing only ultrashort laser pulses. Simultaneously, it is one of the fastest known data recording methods. A bit of information is thereby deterministically written into the surface of the radiated ferromagnetic material by switching its magnetization state using the helicity of circularity polarized laser pulses. So far, the most suitable material for this method is granular FePt with grain sizes down to 4nm,…

2023

Finn-Frederik Stiewe, Spintronic THz Emitters for High Spatial Resolution and Broad Frequency Mapping, University of Greifswald (2020 - 2023)

In this work, 2-dimensional measurements in the THz frequency range with self-made spintronic THz emitters were presented. The STE were used to optimize the spatial resolution and determine the magnetization in geometric shapes. At the beginning, various combinations of FM and NM layers were produced and measured to achieve an optimal composition of the STE. The layer thickness of the ferromagnetic CoFeB layer and the nonmagnetic PT layer was also varied. The investigations have shown that a layer combination of 2 nm thick CoFeB and 2 nm thick Pt, applied to a fused silica glass substrate and covered with a 300 nm thick SiO2 layer, emits the highest THz amplitude. Based on these, a structured sample, consisting of an STE and an additional layer system of 5 nm Cr and 100 nm Au, was produced. Further, three wedge-shaped structures were removed from the gold layer by an etching process so that the THz radiation generated by the STE can pass through these areas. This enables the optimization of the resolution of the system….

2021

Nina Meyer, Photocurrents in topological insulator nanowire and Hall bar devices, University of Greifswald (2016 - 2021)

n this thesis, the transport properties of topological insulators are investigated. In contrast to trivial insulators, topological insulators possess conducting boundary states which cross the bulk energy gap that separates the highest occupied electronic band from the lowest unoccupied band. The materials used in this thesis are three-dimensional topological insulators with time-reversal symmetry. Their associated helical surface states are protected against elastic backscattering by Kramers degeneracy. The unique properties of the helical surface states can be utilized to generate spin-polarized currents at the surface of topological insulators and to control their propagation direction. This makes them a promising material class for the field of spintronics…

Neha Jha, Interfacially Tuned Spin Transport Towards Molecular Spintronics, University of Greifswald  (2017 - 2021)

Organic molecules are the carbon-based complex of several atoms, is an innovative and essential element to create nano-structural platforms, as a building block in the field of organic electronics and organic spintronics. Because of its variety and functionality via widely studied synthetic methods, molecules have played an important role in electronics as not only a transport channel in bulk form but also a tuning layer at the interface of hetero structures. …

2018 

Ulrike Martens, Laser pulse excited electrons and spins in ferromagnetic heterostructures (2014 - 2018)

his thesis reports on thermal excitation of the electron and spin system in ferromagnetic heterostructures via laser heating. … 

Full list with pdf documents of library Uni Göttingen more ...
 
2016
 
Magnetization and elastic dynamics in nanostructured metamaterials
Mansurova, Maria (2016-03-24)
In this work, magnetization and elastic dynamics in nano-structured artificial materials have been investigated in an all-optical, time-resolved, pump-probe experimental setup. Rich dynamics are brought about by means ...
 
2015
 
Spindynamik in Tunnelelementen mit senkrechter magnetischer Anisotropie
Zbarsky, Vladyslav (2015-02-11)
During the last thirty years the memory space per square centimeter on the memory unit was increased exponential. The reason for such strong improvement is the continuous decreasing of the unit cells down to nanometer ...

2014

The tunnel magneto-Seebeck effect in magnetic tunnel junctions
Walter, Marvin (2014-01-30)
The present (cumulative) thesis focusses on thermomagnetoelectric effects in magnetic tunnel junctions. In particular, it deals with the measurement of the tunnel magneto-Seebeck (TMS) effect in tunnel junctions incorporating ...

2013

Photo-magnonics in two-dimensional antidot lattices
Lenk, Benjamin (2013-01-11)
The essential subject of the present (cumulative) thesis is the all-optical generation and detection as well as the systematic manipulation of magnetic excitations, so-called spin waves or magnons. In particular, the ...
 
2012

Physics of laser heated ferromagnets: Ultrafast demagnetization and magneto-Seebeck effect
Walowski, Jakob (2012-07-16)
Including the spin degree of freedom into electronic circuits e.g. as non-volatile memory devices, requires the exact knowledge of the speed with which writing information is possible. All-optical pump-probe experiments ...
 
2010

Korrelationen zwischen struktureller Ordnung und elektrischen Transporteigenschaften in CoFeB|MgO|CoFeB Tunnelmagnetowiderstandselementen
Eilers, Gerrit (2010-10-19)
Magnetic tunnel junctions with amorphous ferromagnetic CoFeB electrodes and a crystalline MgO Barrier show a very high tunnel magnetoresistance (TMR). In epitaxial systems of Fe/MgO/Fe(001) ...

2007

Magnetization dynamics in all-optical pump-probe experiments: spin-wave modes and spin-current damping
Djordjević Kaufmann, Marija (2007-02-19)
In the field of spintronics, future development demands a new insight into the magnetization relaxation processes in the sub nanosecond regime. With the time resolution inherent, femtosecond ...
 
Current-Induced Excitations in Ferromagnetic Single Layer and Trilayer Nanodevices
Parge, Anne (2007-06-27)
The magnetization of a ferromagnetic nanostructure can be manipulated by a spin-polarized electrical current. Thus the switching mechanisms in Co/Cu/Co trilayers as well as in Co single ...

Master Thesis  

2025

Holger Grisk,  Manipulation and detection of spin with ultrafast laser pulses, University of Greifswald

Felix Oberbauer, Laserinduzierte Auswirkungen auf das Verhalten spintronischer Bauelemente, University of Greifswald

2024

Leon Duschek, THz-Spektroskopie an Molekülen, University of Greifswald

Tim Szyszka, Anisotropieabhängigkeit von Spinwellen in magnetisch gekoppelten Schichtsystemen, University of Greifswald

Kevin Jäckel, Exploring field enhanced all-optical helicity-dependent magnetization switching in FePt granular media, University of Greifswald
 

2023 

Lucas Vollroth, Gezieltes magnetisches Schalten mit ultrakurzen polarisierten Laserpulsen, University of Greifswald

Tom Ahlgrimm Untersuchung von Lasereffekten auf spin-torque nanooscialltoren, University of Greifswald

2022

Hauke Heyen Skyrmionendetektion mit magnetischen Tunnelbarrieren, University of Greifswald

2021

Tobias Tubandt, Magnons and THz imaging in one-and two- dimensional structures, University of Greifswald

(Greifswald Master theses from 2014-2021 still missing and to be updated)

Older thesis from Göttingen, pdf-files for some of the old thesis can be found here more... 
 
Magnetische Anisotropie und ultraschnelle Dynamik in CoFeB/MgO/CoFeB Tunnelelementen
Marten Düvel, Bachelorarbeit, Universität Göttingen 2014
 
Ultraschnelle Magnetisierungsdynamik in ferromagnetischen Materialien
Martin Lüttich, Masterarbeit, Universität Göttingen 2014
 
Photoströme von topologischen Isolatoren
Cinja Seick, Bachelorarbeit, Universität Göttingen 2014
 
Magneto-Seebeck-Effekt in Tunnelelementen mit senkrechter magnetischer Anisotropie
Tim Eggebrecht, Masterarbeit, Universität Göttingen 2013
 
Parameter space for thermal spin-transfer torque
Johannes Christian Leutenantsmeyer, Masterarbeit, Universität Göttingen 2013
 
Entmagnetisierungsdynamik in ultradünnen CoFeB Schichten
Markus Müller, Bachelorarbeit Göttingen 2013
 
Spin-Orbit-Torque in CoFeB/MgO/ CoFeB Tunnelelementen
Dennis Meyer, Bachelorarbeit Göttingen 2013
 
Stromgesteuerte Magnetisierungsdynamik CoFeB/MgO-basierter Tunnelelemente
Wittrock, Steffen, Bachelorarbeit Göttingen 2013
 
Magnetisierungsdynamik in mikrostrukturierten CoFeB-Proben an dem Übergang zwischen kontinuierlichem Film und Struktur
Judith von der Haar, Bachelorarbeit Göttingen 2013
 
Hohe Frequenzen und Bandkreuzung in der Magnonik
Stefan Behrenz, Bachelorarbeit Göttingen 2013
 
Spannungsabhängigkeit des Tunnel-Magneto-Seebeck Effektes an CoFeB/MgO Barrieren
Marius Milnikel, Bachelorarbeit Göttingen 2013
 
Spatially resolved magnetization-dynamics in microstructured CoFeB-layers
Frederik Busse, Bachelorarbeit, Universität Göttingen 2012
 
Magneto-Seebeck effect in magnetic tunnel junctions on MgO substrate
Niklas Roschewsky, Bachelorarbeit, Universität Göttingen 2012
 
Ultrafast demagnetization dynamics in ferromagnetic thin films with perpendicular anisotropy
Johannes Mendil, Bachelorarbeit, Universität Göttingen 2012
 
Investigations to CoFeB/MgO/CoFeB-tunnel magnetoresistance elements
Mirco Marahrends, Bachelorarbeit, Universität Göttingen 2012
 
Einfluss der Pulsdauer auf die Relaxation zum thermischen Gleichgewicht bei Entmagnetisierungsuntersuchungen auf der  Femtosekundenzeitskala
Martin Lüttich, Bachelorarbeit, Universität Göttingen 2011
 
Magnetisierungsdynamik nanostrukturierter Filme: Magnonische Moden in rechteckigen Gitterstrukturen
Jelena Panke, Bachelorarbeit, Universität Göttingen 2011
 
Magneto-Seebeck Effekt: Simulationen und Experimente zum Temperaturverlauf
Anissa Zeghuzi, Bachelorarbeit, Universität Göttingen 2011
 
Nanopatterning of CoFeB/MgO/CoFeB-based tunneljunctions
Christian Leutenantsmeyer, Bachelorarbeit, UUniversität Göttingen 2011
 
Magnonische Bandstrukturrechnungen an dünnen Antidot-strukturierten Filmen
Nils Abeling, Bachelorarbeit, Universität Göttingen 2011

Spinwellen in hexagonal strukturierten Metamaterialien
Fabian Garbs, Diplomarbeit, Universität Göttingen 2011

Charakterisierung und Optimierung magnetischer Tunnelelemente
Vladyslav Zbarsky, Diplomarbeit, Universität Göttingen 2011

Magnonische Metamaterialien aus CoFeB
Henning Ulrichs, Diplomarbeit, Universität Göttingen 2010

Determining the Spin Polarization of Heusler Compounds via Femtosecond Magnetization Dynamics
Andreas Mann, Diplomarbeit, Universität Göttingen 2010

Untersuchungen der Transporteigenschaften von CoFeB/MgO/CoFeB-Tunnelmagnetowiderstandselementen
Marvin Walter, Diplomarbeit, Universität Göttingen 2009

Strukturierung von CoFeB/MgO/CoFeB-Tunnelmagnetowiderstandselementen
Kai Ubben, Diplomarbeit, Universität Göttingen 2009

Beobachtung von Damon-Eshbach-Moden mittels Femtosekundenspektroskopie
Benjamin Lenk, Diplomarbeit, Universität Göttingen 2008

Spinstromanregungen in magnetischen Kobalt/ Kupfer/ Kobalt Nanopillarstrukturen
Malte Scherff, Diplomarbeit, Universität Göttingen 2008

Ultrakurze Magnetfeldpulse zur Anregung der Magnetisierungsdynamik in dünnen Eisenschichten
Zhao Wang, Diplomarbeit, Universität Göttingen 2007

Laser-induzierte Magnetisierungsdynamik in Halbmetallen und ferromagnetischen Nanostrukturen
Georg Müller, Diplomarbeit, Universität Göttingen, Berliner-Ungewitter-Foundation award winner 2007

Non-local/ local Gilbert damping in nickel and permalloy thin films
Jakob Walowski, Diplomarbeit, Universität Göttingen 2007

Optische Pikosekundenschalter zur Anregung der Präzessionsdynamik in dünnen Eisenschichten
M. Pietz, Diplomarbeit, Universität Göttingen 2006

Zeitaufgelöste Reflektivitätsmessungen an ferromagnetischen dünnen Filmen
P. Moschkau, Diplomarbeit, Universität Göttingen 2004

Grundlegende Untersuchungen zu Tunnelmagnetowiderstandselementen: Schichtrauigkeit, Tunnelbarriere und magnetische Simulation
G. Eilers, Diplomarbeit, Universität Göttingen 2004

Herstellung und Charakterisierung von ultraschnellen Photoleitungsschaltern
S. Bretschneider, Diplomarbeit, Universität Göttingen 2004

Wiederaufbau eines Titan-Saphir-Lasers und magnetische Simulation
M. Lüttich, Diplomarbeit, Universität Göttingen 2004