Thermoelectric effects in magnetic nanostructures
PhD ceremony: Mr. F.L. Bakker, 14.30 uur, Academiegebouw, Broerstraat 5, Groningen
Dissertation: Thermoelectric effects in magnetic nanostructures
Promotor(s): prof. B.J. van Wees
Faculty: Mathematics and Natural Sciences
Electron transport is one of the most important physical phenomena used in todays technology. All modern electrical equipment, ranging from vacuum cleaners till high-end microprocessors is essentially founded on this type of transport. However, in most cases the electron's full potential is not used and most applications only exploit the negative elementary charge that it possesses. The energy and the magnetic moment of the electrons are properties which are used in thermoelectricity and spin-electronics (spintronics), respectively. Spintronics focuses on the transfer of magnetic moments for the information transport, while thermoelectric phenomena (e.g. the Peltier and Seebeck effect) have found their application in devices for electric heating/cooling or thermocouples. This thesis describes the fundamental interactions between the three types of transport (charge, heat, spin) in magnetic nanostructures. The experimental work described here is part of a wider research direction, called spin-caloritronics. This research branch of spintronics studies the role of magnetic moments in heat transport. The potential advantages of spin-caloritronic effects with respect to regular thermoelectricity can be found in the easy manipulation of magnetic textures at the nanoscale. This enables very localized and programmable control of heat flow which might prove useful for thermopower energy harvesting or refrigeration. However, the previously discussed effects are weak and far from direct applications. Nonetheless, a combination of new developments in this field and by exploring novel materials it could one day lead to the implementation of spin-caloritronics in our everyday electronic devices.
Last modified: | 13 March 2020 12.59 a.m. |
More news
-
07 July 2025
Master’s student Industrial Engineering and Management Ana Lazar wins GUF 100 Prize
At the UG Ceremony of Merits on July 4, Ana Lazar was awarded the GUF 100 Prize, making her the best student of the Faculty of Science and Engineering 2024-2025.
-
04 July 2025
University of Groningen awards various prizes during Ceremony of Merits
The UG awarded different prizes to excellent researchers and students during the Ceremony of Merits on 4 July 2025.
-
03 July 2025
Erik Heeres receives RUG Impact Innovator Excellence Award
During the RUG Ventures Innovation Day, Prof. Erik Heeres of the Faculty of Science and Engineering (RUG) was awarded the Impact Innovator Excellence Award.