Research
Overview
Research Group: Condensed Matter Physics
The research in my group is focused on understanding the correlation between structure and functionality of advanced nano-materials and bimolecular complexes on the atomic and molecular level. The atomic structure of either artificial nanoscale materials or molecular bio-machines or is the key factor that determines their functionality. Hence determining this correlation is one of the fundamental goals of nanoscience and technology. In my research over the last 15 years I have used both experimental (e.g advanced atomic resolution electron microscopy and thin film growth) and theoretical techniques (first principle quantum mechanical calculations) to elucidate this connection.
Research Interest
- Half-metals for spintronic applications
- Polar Oxides for electronic applications and catalysis
- 3D Topological Insulators: thin films and heterostructure
- Advanced electron microscopy methods for atomic level materials characterisation
Selected Publications
- A Migliorini, B Kuerbanjiang, T Huminiuc, D Kepaptsoglou, M Muñoz, JLF Cuñado, J Camarero, C Aroca, G Vallejo-Fernández, VK Lazarov, JL Prieto,’ Spontaneous exchange bias formation driven by a structural phase transition in the antiferromagnetic material’, Nature Materials, 17, 28–35 doi:10.1038/nmat5030 2017 (2018)
- A Ghasemi, D Kepaptsoglou, PL Galindo, Q M Ramasse, T Hesjedal, VK Lazarov, ‘Van der Waals epitaxy between the highly lattice mismatched Cu-doped FeSe and Bi2Te3’, NPG Asia Materials, 9, page e402 doi:10.1038/am.2017.111 (2017)
- Z. Nedelkoski, D. Kepaptsoglou, L. Lari, T. Wen, RA Booth, SD Oberdick, PL Galindo, QM Ramasse, RFL Evans, S Majetich, VK Lazarov, ‘Origin of reduced magnetization and domain formation in small magnetite nanoparticles’ Scientific Reports 2017; 7: 45997 (2017)
- Z Nedelkoski, B Kuerbanjiang, SE Glover, AM Sanchez, D Kepaptsoglou, A. Ghasemi, C. W Burrows, S. Yamada, K. Hamaya, Q. M Ramasse, P. J Hasnip, T. Hase, G. R Bell, A. Hirohata, V. K Lazarov, ‘Realisation of magnetically and atomically abrupt half-metal/semiconductor interface: Co2FeSi0. 5Al0. 5/Ge (111)’, Scientific Reports, 6: 37282. (2016)
- K. McKeena, F. Hofer, D. Gilks, V.K. Lazarov, C. Chen, Z. Wang and Y. Ikuhara, ‘Atomic scale structure and properties of highly stable antiphase boundary defects in Fe3O4’, Nature Communications, doi:10.1038/ncomm6740 (2014)
- Y. Liu, Y. Y. Li, S. Rajput, D. Gilks, L. Lari, P. L. Galindo, M. Weinert, V. K. Lazarov and L. Li, ‘Tuning Dirac states by strain in the topological insulator Bi2Se3’ Nature Physics 10, 294 (2014)
Projects
Current Projects
- In search for 100% spin polarised materials’, EPSRC funded
- ‘Half-metallic ferromagnets: material fundamentals for next-generation spintronics, EPSRC funded
- ‘Functional interfaces at strongly polar oxide systems’, International visiting grant between York and Tokyo Institute of Technology
- Atomistic study of spintronic materials, International Exchanges Scheme between York-Cadiz funded by Royal Society
Supervision
PhD Students:
- Daniel Pingstone, co-supervised with Dr S Tear
- James Beevers, co-supervised with Dr S Cavill
- Irene Azteca, co-supervised with Dr S Cavill
- Adam Kerrigan, co-supervised with Dr Keith McKenna
- James Quirk, co-supervised with Dr Keith McKenna
- Genadi Naydenov, co-supervised with Prof Matt Probert
PDRA