Exploring Geometric Frustration in Magnetic Systems under High Pressure
Delve into the world of geometrically frustrated magnetic systems under high pressure through the research work of Julius Bakai, a first-year PhD student. Discover the experimental methods used, publications, projects, and the fascinating interplay between frustrated metallic magnetic systems and superconductivity. Gain insights into the projects led by principal investigators in this cutting-edge field of study, focusing on metallic geometrically frustrated systems and magnetic frustration. Explore the theoretical and experimental study of transition metal oxyhydride nanomaterials for superconductivity and photocatalysis. Uncover the complexities of geometrically frustrated systems, including the supersolid phase and Skyrmion crystals, with a glimpse into the experimental results and phase diagrams observed in HoB4 under different pressure conditions.
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Presentation Transcript
Geometrically Frustrated Magnetic Systems under High Pressure J lius Ba kai first year PhD student
Workplace o Technical University of Ko ice FEI o diploma thesis: frustrated metallic magnetic systems o teaching o Centre of Low Temperature Physics o working in laboratory o doctoral thesis Materials under extreme conditions K. Flachbart S. Gab ni E. Ga o G. Prist M. Orend
Publications o J.Ba kai et al., Superconducting phase diagram of LuB12 and Lu1-XZrXB4 (x 0.45) down to 50 mK. Acta Phys. Pol., vol137 (2020) o G. Pist et al., Magnetic phase diagram of geometrically frustrated magnetic system ErB4under high pressure. Phys. Soc. of Jap. 011093 (2020) o Mat. Orend et al., Tuning the magnetocaloric effect in the Lu-doped frustrated Shastry-Sutherland system TmB4. Phys. Rev. B. 102, 174422 (2020)
Projects GRANT NUMBER PRINCIPAL INVESTIGATOR GRANT TITLE DURATION Frustrated metallic magnetic systems APVV-17-0020 Slavom r Gab ni 2018-2022 Metallic geometrically frustrated systems DAAD-57452699 Slavom r Gab ni 2019-2020 Magnetic frustration and superconductivity in 2D and 3D borides VEGA 2/0032/20 Gabriel Prist 2020-2023 Theoretical and Experimental Study of Transition Metal Oxyhydride Nanomaterials for Superconductivity and Photocatalysis M-ERA.NET S. Z. Karashanov K. Flachbart 2019-2022
Geometrically frustrated systems o Geometrically frustrated systems o Supersolid phase o Skyrmion crystals
Experimental methods o4He Cryostat o T = 1.5 K o B = 8 T o3He-4He dilution refrigerator o T = 50 mK o B = 10 T
Experimental methods o Piston cylinder cell o maximum pressure 3 GPa o resistivity, ac magnetic susceptibility
Experimental results o Phase diagram of HoB4 o P0 atmosphere o P5 3 GPa o Evolution of Tnwith increasing pressure 4,0 7,75 3,0 3,5 7,50 HoB4 7,25 2,5 7,00 HoB4 B = 0 T Tn (K) B (T) 2,0 6,75 1,5 6,50 P0 P5 1,0 6,25 0,5 0,0 6,00 2 3 4 5 6 7 8 0 5 10 15 20 25 30 T (K) p (GPa)
Conclusion o Investigation of TmB4, ErB4, HoB4 o Resistivity measurement o Heat capacity o Magnetization o Phase diagrams o Influence of pressure on superconductivity
