Dr Thomas Ostler completed a PhD in computational magnetism at the University of York as part of an EU FP7 project working in the field of ultrafast spin dynamics and optical switching of magnetic materials using spin dynamics models. The research was aimed at developing theoretical models to understand the highly non-equilibriun dynamics of magnetic materials after the action of femtosecond laser pulses.
Tom joined Sheffield Hallam University as a Lecturer of Physics in March 2017 and is also the admissions tutor for the BSc Physics course.
Tom's research expertise includes the use of second principles modelling in the form of spin dynamics and micromagnetic models, as well as, using first principles electronic structure calculations to parameterise Hamiltonians in a so-called hierarchical multi-scale approach.
Tom began his postdoctoral positions at the University of York working jointly as a project manager for a collaborative EU FP7 project on ultrafast magnetism involving 9 universities from across Europe, and Seagate Technology. In 2015 he moved to the University of Exeter to work as a senior postdoctoral research fellow in the Group of Prof Gino Hrkac on functional materials on an EPSRC project with the University of Manchester.
In 2015 Tom was awarded a Marie Curie BeIPD COFUND project at the University of Liège hosted by the Nanomaterials group of Prof Matthieu Verstraete. The project involved using electronic structure calculations to fit second principles Hamiltonians to study the dynamics of magnetic and multiferroic materials.
Tom is also a committee member for qan EU COST project (CA17123-MAGNETOFON - Ultrafast opto-magneto-electronics for non-dissipative information technology) and an elected member of the Institute of Physics Magnetism working group.
Details of Grants/Awards:
- 14k GPU hours on the Cambridge Service for Data Driven Discovery (CSD3) operated by the University of Cambridge Research Computing Service, provided by Dell EMC and Intel using Tier-2 funding from the Engineering and Physical Sciences Research Council (capital grant EP/P020259/1), and DiRAC funding from the Science and Technology Facilities Council.
- Travel award under COST Action P19 (Multiscale Modeling of Materials) - €1750.
- Marie Curie Incoming (COFUND) Fellow at the University of Liège – salary (2 years) + €16K expenses (travel, consumables, equipment).
- Accomodation award under COST Action MP1306 (Training workshop for SPR-KKR code), €276.
Specialist areas of interest:
- Multiscale modelling
- Optical switching
- Ultrafast spin dynamics
- GPU computing
- Interface magnetism.
Department of Engineering and Mathematics
Science, Technology and Arts
Subject Area/Group: Physics
- Quantum and Condensed Matter Physics (joint with Simon Clark), BSc (Hons) Physics;
- Applied Engineering Mathematics Tutorials;
- The Professional and Practical Physicists, BSc (Hons) Physics;
- Introduction to Condensed Matter Physics, BSc (Hons) Physics
- Polymers, Nanocomposites and Modelling Research Centre
- Materials and Engineering Research Institute
- Marie Curie COFUND: Modeling of Multiferroic Materials, 2015-2017.
- Prof Matthieu Verstraete – University of Liège, Belgium.
- Prof Roy Chantrell – The University of York.
- Prof Gino Hrkac – The University of Exeter.
- Dr Stuart Cavill – The University of York and Diamon Light Source.
- Dr Ilie Radu – Max Born Institute, Berlin.
- Prof Andreas Scherz – European XFEL, Hamburg.
- Prof Tom Thomson – The University of Manchester.
- Dr Unai Atxitia – The University of Konstanz, Germany.
- Dr Oksana Chubykalo-Fesenko, ICMM, Madrid.
- Dr Chudong Xu, South China Agricultural University, Guangzhou, China.
- Prof Kaushik Roy, Purdue University, USA.
- Prof Hermann Dürr, SLAC, CA, USA.
- Dr Matthew Ellis, Trinity College, Dublin.
- Prof Aldo Romero, West Virginia State University, USA.
- Dr Ezio Iacocca, University of Colorado, Bolder, USA.
- Dr Zubair Al Azim, Intel, CA, USA.
OSTLER, Thomas, AZIM, Zubair Al, XU, Chudong and ROY, Kaushik (2018). Optical Receiver with Helicity Dependent Magnetization Reversal. IEEE Transactions on Magnetics.
LU, Xangyang, ZOU, Xiao, HINZKE, Denise, LIU, Tao, WANG, Yichuan, CHENG, Tuyan, WU, Jing, OSTLER, Thomas, CAI, Jianwang, NOWAK, Ulrich, CHANTRELL, Roy, ZHAI, Ya and XU, Yongbing (2018). Roles of heating and helicity in ultrafast all-optical magnetization switching in TbFeCo. Applied Physics Letters, 113 (3), 032405.
SKELLAND, C, OSTLER, Thomas, WESTMORELAND, Sam, EVANS, R. F. L, CHANTRELL, R. W, YANO, M, SHOJI, T, MANABE, A, KATO, A, WINKLHOFER, M, ZIMANYI, J, SCHREFL, T and HRKAC, G (2018). Probability distribution of substituted titanium in RT12 (R = Nd and Sm; T = Fe and Co) structures. IEEE Transactions on Magnetics.
DI GENNARO, Marco, MIRANDA, Alonso L, OSTLER, Thomas, ROMERO, Aldo H and VERSTRAETE, Matthieu J (2018). Competition of lattice and spin excitations in the temperature dependence of spin-wave properties. Physical Review B (PRB), 97 (21).
CUADRADO, Ramón, OROSZLÁNY, László, DEÁK, András, OSTLER, Thomas, MEO, Andrea, CHEPULSKII, Roman, APALKOV, Dmytro, EVANS, Richard, SZUNYOGH, László and CHANTRELL, Roy (2018). Site-resolved contributions to the magnetic anisotropy energy and complex spin structure of Fe/MgO sandwiches. Physical Review Applied, 9 (054048).
CUADRADO, Ramón, OROSZLÁNY, László, SZUNYOGH, László, HRKAC, Gino, CHANTRELL, Roy and OSTLER, Thomas (2018). A multiscale model of the effect of Ir thickness on the static and dynamic properties of Fe/Ir/Fe films. Scientific Reports, 8 (3879), 1-13.
ATXITIA, U and OSTLER, Thomas (2018). Ultrafast double magnetization switching in GdFeCo with two picosecond-delayed femtosecond pump pulses. Applied Physics Letters, 113 (6), 062402.
MORENO, Roberto, OSTLER, Thomas, CHANTRELL, Roy and CHUBYKALO-FESENKO, Oksana (2017). Conditions for thermally induced all-optical switching in ferrimagnetic alloys: Modeling of TbCo. Physical Review B (PRB), 96 (014409).
BARTON, C. W., OSTLER, Thomas, HUSKISSON, D., KINANE, C. J., HAIGH, S. J., HRKAC, G. and THOMSON, T (2017). Substrate Induced Strain Field in FeRh Epilayers Grown on Single Crystal MgO (001) Substrates. Scientific Reports, 7 (44397).
OSTLER, Thomas, BARTON, Craig, THOMSON, Thomas and HRKAC, Gino (2017). Modeling the thickness dependence of the magnetic phase transition temperature in thin FeRh films. Physical Review B, 95 (6), 064415.
ATKINSON, Lewis J., OSTLER, Thomas, HOVORKA, O., WANG, K. K., LU, B., JU, G. P., HOHLFELD, J., BERGMAN, B., KOOPMANS, B. and CHANTRELL, Roy W. (2016). Effects of interactions on the relaxation processes in magnetic nanostructures. Physical Review B, 94 (13), p. 134431.
XU, C., OSTLER, Thomas and CHANTRELL, R. W. (2016). Thermally induced magnetization switching in Gd/Fe multilayers. Physical Review B, 93 (5), 054302.
ATXITIA, U., OSTLER, Thomas, CHANTRELL, R. W. and CHUBYKALO-FESENKO, O. (2015). Optimal electron, phonon, and magnetic characteristics for low energy thermally induced magnetization switching. Applied Physics Letters, 107 (19), p. 192402.
RADU, I., STAMM, C., ESCHENLOHR, A., RADU, F., ABRUDAN, R., VAHAPLAR, K., KACHEL, T., PONTIUS, N., MITZNER, R., HOLLDACK, K., F\"HLISCH, A., OSTLER, Thomas, MENTINK, J. H., EVANS, R. F. L., CHANTRELL, R. W., TSUKAMOTO, A., ITOH, A., KIRILYUK, A., KIMEL, a. V. and RASING, Th. (2015). Ultrafast and Distinct Spin Dynamics in Magnetic Alloys. SPIN, 5 (3), p. 1550004.
OSTLER, Thomas, CUADRADO, R, CHANTRELL, R. W., RUSHFORTH, A. W. and CAVILL, S. A. (2015). Strain Induced Vortex Core Switching in Planar Magnetostrictive Nanostructures. Physical Review Letters, 115 (6), 067202.
OSTLER, Thomas, BARKER, J, EVANS, R F L, ATXITIA, U, CHANTRELL, R W, HOVORKA, O. and CHUBYKALO-FESENKO, O. (2015). Multiscale modeling of ultrafast magnetization dynamics. In: BIGOT, Jean-Yves, HÜBNER, Wolfgang, RASING, Theo and CHANTRELL, Roy, (eds.) Ultrafast Magnetism I : Proceedings of the International Conference, UMC 2013 Strasbourg, France, October 28th - November 1st, 2013. Springer Proceedings in Physics (159). Cham, Springer International Publishing, 146-149.
AZIM, Zubair Al, FONG, Xuanyao, OSTLER, Thomas, CHANTRELL, Roy and ROY, Kaushik (2014). Laser Induced Magnetization Reversal for Detection in Optical Interconnects. IEEE Electron Device Letters, 35 (12), 1317-1319.
OSTLER, Thomas, ELLIS, Matthew O A, HINZKE, Denise and NOWAK, Ulrich (2014). Temperature-dependent ferromagnetic resonance via the Landau-Lifshitz-Bloch equation: Application to FePt. Physical Review B, 90 (9), 094402.
EVANS, Richard F. L., OSTLER, Thomas, CHANTRELL, Roy W., RADU, Ilie and RASING, Theo (2014). Ultrafast thermally induced magnetic switching in synthetic ferrimagnets. Applied Physics Letters, 104 (8), 082410.
EVANS, R F L, FAN, W J, CHUREEMART, P, OSTLER, Thomas, ELLIS, M O A and CHANTRELL, R W (2014). Atomistic spin model simulations of magnetic nanomaterials. Journal of Physics: Condensed Matter, 26 (10), p. 103202.
BARKER, J, ATXITIA, U, OSTLER, Thomas, HOVORKA, O, CHANTRELL, R W, CHUBYKALO-FESENKO, O and CHANTRELL, R W (2013). Two-magnon bound state causes ultrafast thermally induced magnetisation switching. Scientific Reports, 3, p. 3262.
ATXITIA, U., OSTLER, Thomas, BARKER, J., EVANS, R. F L, CHANTRELL, R. W. and CHUBYKALO-FESENKO, O. (2013). Ultrafast dynamical path for the switching of a ferrimagnet after femtosecond heating. Physical Review B, 87 (22), p. 224417.
ELLIS, M. O. A., OSTLER, Thomas and CHANTRELL, R. W. (2012). Classical spin model of the relaxation dynamics of rare-earth doped permalloy. Physical Review B, 86 (17), p. 174418.
RADU, Ilie, VAHAPLAR, Kadir, STAMM, Christian, KACHEL, Torsten, PONTIUS, Niko, RADU, Florin, ABRUDAN, Radu, DÜRR, Hermann, OSTLER, Thomas, BARKER, Joe, EVANS, Richard, CHANTRELL, Roy, TSUKAMOTO, Arata, ITOH, Akiyoshi, KIRILYUK, Andrei, RASING, Theo and KIMEL, Alexey (2012). Ultrafast magnetism as seen by x-rays. Proceedings of SPIE : Ultrafast Phenomena and Nanophotonics XVI, 8260.
OSTLER, Thomas, BARKER, J, EVANS, R F L, CHANTRELL, R W, ATXITIA, U, CHUBYKALO-FESENKO, O, EL MOUSSAOUI, L, MENGOTTI, E, HEYDERMAN, L J, NOLTING, F, TSUKAMOTO, A, ITOH, A, AFANASIEV, D, IVANOV, B a, KALASHNIKOVA, a M, VAHAPLAR, K, MENTINK, J, KIRILYUK, A, RASING, Th and KIMEL, a V (2012). Ultrafast heating as a sufficient stimulus for magnetization reversal in a ferrimagnet. Nature Communications, 3, p. 666.
OSTLER, Thomas, EVANS, Richard F. L., CHANTRELL, Roy W., ATXITIA, Unai, CHUBYKALO-FESENKO, Oksana, RADU, Ilie, ABRUDAN, Radu, RADU, Florin, TSUKAMOTO, Arata, ITOH, A., KIRILYUK, A., RASING, Theo and KIMEL, A. V. (2011). Crystallographically amorphous ferrimagnetic alloys : comparing a localized atomistic spin model with experiments. Physical Review B, 84 (2), 024407.
RADU, I., VAHAPLAR, K., STAMM, C., KACHEL, T., PONTIUS, N., DÜRR, H., OSTLER, Thomas, BARKER, J, EVANS, R, CHANTRELL, R, TSUKAMOTO, A, ITOH, A, KIRILYUK, A, RASING, Th and KIMEL, A V (2011). Transient ferromagnetic-like state mediating ultrafast reversal of antiferromagnetically coupled spins. Nature, 472 (7342), 205-208.
Ad Hoc Reviewer: Nature Light: Science and Applications, Nature Scientific Reports, Phys. Rev. Lett., Phys. Rev. B, Phys. Rev. Appl., Phys. Rev. E., Journal of Alloys and Compounds, JAP, JMMM, APL, IEEE Trans Magn, MMM Annual Conf. Proc.
Reviewer of Grants for External Organisations: Deutsche Forschungsgemeimschaft (DFG).
Conference and Workshop Organisation and Session Chairs:
2019 – IOP Magnetism Conference, Leeds, UK – Joint Programme Chair.
2015 – EMN Ultrafast Meeting on Ultrafast, Las Vegas – International Program Committee.
2015 – Ultrafast Magnetism Conference, Nijmegen, The Netherlands – Chair of session “Ultrafast Magnetic Control”.
2016 – Sol-SkyMag, San Sebastian, Spina – Chair of session “Spintronics and Spin Orbit Effects”.
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