糖心TV

Background

I joined the Superconductivity and Magnetism Group at 糖心TV as a Postdoctoral Research Fellow in January 2017 as a part of , where I worked with Professor Geetha Balakrishnan.
I completed a Ph.D. in Chemistry at in 2017 under the supervision of Professor Andrew Beeby. The family of materials I discovered during my Ph.D. work and as post graduate researcher at are strongly correlated systems exhibiting a variety of magnetic properties, spanning antiferromagnetism, ferromagnetism, canted-antiferromagnetismm, low-dimensional magnetism and superconductivity. I have performed the characterisation of the obtained novel organic magnets by laboratory- and synchrotron-based () x-ray diffraction (also following structural phase transitions and negative thermal expansions), SQUID magnetometry at ambient and hydrostatic pressure, Raman and muon spectroscopy (). Some of the results are gathered in my and in the publications listed below.

Research Interests

At 糖心TV my research involved the synthesis and characterisation of Skyrmion hosting materials. By utilising chemical vapour transport method I have successfully grown single crystals of Cu₂OSeO₃, Zn-substituted Cu₂OSeO₃ and the family of GaV₄S_(8-y)Se_(y) (y ranges between 0.5 and 7.5), hosting both Bloch and N茅el types of Skrmions. The Bridgman and modified Bridgman techniques were used for growth the single crystal grains of (Mn_0.5Ni_0.5)₆₅Ga₃₅, Mn_1.4Pt_0.9Pd_0.1Sn and Co_(10-x)Zn_(10-y)Mn_(x+y) intermetallic compounds hosting 鈥榖iskyrmions鈥�, antiskyrmions and Bloch type Skyrmions respectively. The single crystals of Gd₂PdSi₃, where the frustration is the driving force for skyrmion lattice formation instead of DMI, were grown by the optical floating zone method. The detailed structural characterisation of these materials was achieved by laboratory and synchrotron based single crystal and powder diffraction (), including anomalous X-ray scattering, along with powder () and single crystal () neutron diffraction. The magnetic properties were investigated by DC- and AC-SQUID magnetometry. I have used Olex2, Jana2006, TOPAS-Academic V6 and Expo2014 to analyse the obtained data.

Publications

鈥� J. C. Loudon, A. C. Twitchett-Harrison, D. Cort茅s-Ortu帽o, M. T. Birch, L. A. Turnbull, A. 艩迟别蹿补苍膷颈膷, F. Y. Ogrin, E. O. Burgos-Parra, N. Bukin, A. Laurenson, H. Popescu, M. Beg, O. Hovorka, H. Fangohr, P. A. Midgley, G. Balakrishnan, and P. D. Hatton, , Advanced Materials 31, 1806598 (2019).

鈥� M. T. Birch, R. Takagi, S. Seki, M. N. Wilson, F. Kagawa, A. 艩迟别蹿补苍膷颈膷, G. Balakrishnan, R. Fan, P. Steadman, C. J. Ottley, M. Crisanti, R. Cubitt, T. Lancaster, Y. Tokura, and P. D. Hatton, , Physical Review B 100, 014425 (2019).

鈥� K. J. A. Franke, B. M. Huddart, T. J. Hicken, F. Xiao, S. J. Blundell, F. L. Pratt, M. Crisanti, J. Barker, S. J. Clark, A. 艩迟别蹿补苍膷颈膷, M. Ciomaga Hatnean, G. Balakrishnan, and T. Lancaster, "", Physical Review B 98, 054428 (2018).

鈥� A. 艩迟别蹿补苍膷颈膷, G. Klupp, T. Knafli膷, D. S. Yufit, G. Tav膷ar, A. Poto膷nik, A. Beeby and D. Ar膷on, 鈥溾��, The Journal of Physical Chemistry C 121 (27), 14864-14871 (2017).

鈥� Y. Takabayashi, M. Menelaou, H. Tamura, N. Takemori, T. Koretsune, A. 艩迟别蹿补苍膷颈膷, G. Klupp, A. J. C. Buurma, Y. Nomura, R. Arita, D. Ar膷on, M. J. Rosseinsky and K. Prassides, 鈥溾��, Nature Chemistry 9, 635-643 (2017).

鈥� B. Ali膷, A. 艩迟别蹿补苍膷颈膷 and G. Tav膷ar, 鈥溾��, Dalton Transactions 46, 3338 (2017).

鈥� A. 艩迟别蹿补苍膷颈膷, D. Primc, G. Tav膷ar and T. Skapin, 鈥溾��, Dalton Transactions 44, 20609 (2015).

Submitted publications

鈥� A. 艩迟别蹿补苍膷颈膷, S.H. Moody, T.J. Hicken, T.M. Birch, G. Balakrishnan, S.A. Barnett, M. Crisanti, J.S.O. Evans, S.J.R. Holt, K.J.A. Franke, P.D. Hatton, B.M. Huddart, M.R. Lees, F.L. Pratt, C.C. Tang, M.N. Wilson, F. Xiao, and T. Lancaster, 鈥溾��

Write to

If you have any questions about the research work carried out by Dr Ales Stefancic while at 糖心TV please email:

G dot Balakrishnan at warwick dot ac dot uk

Contact Details

Paul Scherrer Institute
Forschungsstrasse 111
5232 Villigen PSI
Switzerland

Telephone

+41 56 310 27 45

ales dot stefancic at psi dot ch