Dr. rer. nat. Matthias Opel
- Phone
- +49 89 289-14237
- Room
- –
- matthias.opel@mytum.de
- Links
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Homepage
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- Group
- Technical Physics
- Additional Info
- Zimmer 135 (1. OG)
Courses and Dates
| Title and Module Assignment | |||
|---|---|---|---|
| Art | SWS | Lecturer(s) | Dates |
|
Spin Currents and Skyrmionics eLearning course course documents Assigned to modules: |
|||
| PS | 2 |
Hübl, H.
Assisstants: Althammer, M.Geprägs, S.Opel, M. |
Thu, 14:00–15:30, WMI 142 |
Offered Bachelor’s or Master’s Theses Topics
- Magnon transport in laterally confined magnetic insulators
- In antiferromagnetic insulators, we obtain two magnon modes with opposite spin chirality due to the two opposing magnetic sublattices. In this way, magnon transport in antiferromagnetic insulators can be considered as the magnonic equivalent of electronic spin transport in semiconductors and the properties can be mapped onto a magnonic pseudospin. At present, most experiments rely on extended epitaxial thin films of antiferromagnetic insulators. Your thesis will be dedicated to confine the lateral dimensions of the magnon transport channel. By conducting all-electrical magnon transport experiments, you will then determine the role of lateral confinement in such measurement schemes. You are interested in providing novel insights into pseudospin properties in antiferromagnetic insulators and provide a spark for theoretical descriptions. In order to answer questions regarding magnon transport in magnetic insulators, your thesis will contain aspects of the fabrication of nano-scale devices using electron beam lithography as well as ultra-sensitive low-noise electronic measurements at high magnetic fields in a cryogenic environment.
- suitable as
- Master’s Thesis Condensed Matter Physics
- Supervisor: Rudolf Gross
- Thin film material design for future magnonics
- Spin waves (magnons) are the quantized excitations of the magnetic lattice in solid state systems. The field of magnonics is exploring concepts to use these magnons for information transport and processing. Of special interest is to obtain reliable control over the relevant properties of these magnons such as, for example, their lifetime. The goal of your thesis is to fabricate high quality magnetically ordered thin film structures and investigate their spin wave properties via microwave spectroscopy methods. You will gain experience in nanofabrication by working with state-of-the-art thin film deposition machines. Moreover, you will utilize thin film x-ray diffraction and magnetometry experiments to characterize the materials. You will utilize microwave spectroscopy techniques to extract the spin wave properties.
- suitable as
- Bachelor’s Thesis Physics
- Supervisor: Rudolf Gross
Publications
- Revealing the effect of interstitial oxygen on the low-energy crystal electric field excitations of Pr3+ in 214 -nickelates
- Rajesh Dutta (author), Avishek Maity (author), Anna Marsicano (author), J. Ross Stewart (author), Matthias Opel (author), Werner Paulus (author)
- 2022-05-27
- journal article
- Physical Review B
- DOI: 10.1103/PhysRevB.105.195147
- Influence of low-energy magnons on magnon Hanle experiments in easy-plane antiferromagnets
- Janine Gückelhorn (author), Akashdeep Kamra (author), Tobias Wimmer (author), Matthias Opel (author), Stephan Geprägs (author), Rudolf Gross (author), Hans Huebl (author), Matthias Althammer (author)
- 2022-03-29
- journal article
- Physical Review B
- DOI: 10.1103/PhysRevB.105.094440
- In Situ Study of FePt Nanoparticles‐Induced Morphology Development during Printing of Magnetic Hybrid Diblock Copolymer Films
- 2022-01-19
- journal article
- Advanced Functional Materials
- URL: http://dx.doi.org/10.1002/adfm.202107667
- DOI: 10.1002/adfm.202107667
- ISSN: 1616-301X
- ISSN: 1616-3028
- Low-temperature suppression of the spin Nernst angle in Pt
- T. Wimmer (author), J. Gückelhorn (author), S. Wimmer (author), S. Mankovsky (author), H. Ebert (author), M. Opel (author), S. Geprägs (author), R. Gross (author), H. Huebl (author), M. Althammer (author)
- 2021-10-11
- journal article
- Physical Review B
- DOI: 10.1103/PhysRevB.104.L140404
- Controlling Domain-Wall Nucleation in Ta / Co - Fe - B / MgO Nanomagnets via Local Ga+ Ion Irradiation
- Simon Mendisch (author), Fabrizio Riente (author), Valentin Ahrens (author), Luca Gnoli (author), Michael Haider (author), Matthias Opel (author), Martina Kiechle (author), Massimo Ruo Roch (author), Markus Becherer (author)
- 2021-07-15
- journal article
- Physical Review Applied
- DOI: 10.1103/PhysRevApplied.16.014039
- Controlling Domain-Wall Nucleation in Ta/CoFeB/MgO Nanomagnets via Local Ga+ Ion Irradiation
- 2021-07-15
- journal article
- Physical Review Applied
- DOI: 10.1103/PhysRevApplied.16.014039
- Quantifying the spin mixing conductance of EuO/W heterostructures by spin Hall magnetoresistance experiments
- Paul Rosenberger (author), Matthias Opel (author), Stephan Geprägs (author), Hans Huebl (author), Rudolf Gross (author), Martina Müller (author), Matthias Althammer (author)
- 2021-05-10
- journal article
- Applied Physics Letters
- DOI: 10.1063/5.0049235
- Spray-Deposited Anisotropic Ferromagnetic Hybrid Polymer Films of PS-b-PMMA and Strontium Hexaferrite Magnetic Nanoplatelets
- Wei Cao (author), Shanshan Yin (author), Martina Plank (author), Andrei Chumakov (author), Matthias Opel (author), Wei Chen (author), Lucas P. Kreuzer (author), Julian E. Heger (author), Markus Gallei (author), Calvin J. Brett (author), Matthias Schwartzkopf (author), Artem A. Eliseev (author), Evgeny O. Anokhin (author), Lev A. Trusov (author), Stephan V. Roth (author), Peter Müller-Buschbaum (author)
- 2021-01-13
- journal article
- ACS Applied Materials & Interfaces
- DOI: 10.1021/acsami.0c19595
- Surface distortion of Fe dot-decorated TiO2 nanotubular templates using time-of-flight grazing incidence small angle scattering
- Neelima Paul (author), Jean-Francóis Moulin (author), Gaetano Mangiapia (author), Armin Kriele (author), Peter Müller-Buschbaum (author), Matthias Opel (author), Amitesh Paul (author)
- 2020-12
- journal article
- Scientific Reports
- DOI: 10.1038/s41598-020-60899-2
- Static magnetic proximity effects and spin Hall magnetoresistance in Pt/Y3Fe5O12 and inverted Y3Fe5O12/Pt bilayers
- 2020-12-28
- journal article
- Physical Review B
- URL: http://dx.doi.org/10.1103/physrevb.102.214438
- DOI: 10.1103/physrevb.102.214438
- ISSN: 2469-9950
- ISSN: 2469-9969
further publications (total of 197).
See ORCID profile of Matthias Opel as well.