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NEWS

The call for scholarships for research stays at IFW Dresden for Ukrainian master students/postdoc is now open. NEW DEADLINE: MARCH 5th 2021!!

We are glad to announce our 3rd UKRATOP Workshop "Topological Phenomena in Quantum Materials" on March 26th 2021.

We welcome Prof. V. Nikonova to her research stay at IFW during November 2020.

Our project has been prolonged to December 2022! This will allow us to complete the activites that were delayed by the Corona pandemic. In particular, research stays for students will be possible for the winter semester 2021-2022.  Additional funds will allow us to acquire a cryostat with a 14 T magnet that will allow us to better characterize topological materials.

 

We welcome M. Flaks to his student research stay at IFW during the winter semester 2020-2021.

 

Our first fully online event "UKRATOP DAYS 2020" took place on June 29th-July 2nd. We enjoyed progress reports from ten scholarsip holders, as well as nine seminars and a popular lecture as a part of our 2nd UKRATOP Workshop "Topological Phenomena in Quantum Materials". Five candidates from our 3rd Selection Workshop have been offered student scholarships. Congratulations!

 

 

 

 


 

About

The scientific goal of the project "Topological order of electrons in solids: New materials, Phenomena & application Concepts" (UKRATOP) is to design new high-quality materials with exceptional surface and edge conditions resulting from their topological nature. The topological stability of the exotic physical properties of these materials can be of tremendous interest to the next generation of information technology.
UKRATOP is funded by the Federal Ministry of Education and Research (Bundesministerium für Bildung und Forschung, BMBF) under reference 01DK18002.

Scientific Output

Mechanism of defect formation in Zr1-xVxNiSn thermoelectric material
V. V. Romaka, Yu. V. Stadnyk, P. F. Rogl, L. P. Romaka, V. Ya. Krayovskyy, A. Ya. Horpenyuk, and A. M. Horyn
Ukr. J. Phys. 66, 333 (2021)

Curvature effects on phase transitions in chiral magnets
Kostiantyn V. Yershov, Volodymyr P. Kravchuk, Denis D. Sheka, and Ulrich K. Rößler
SciPost Phys. 9, 043 (2020)

Curvilinear one-dimensional antiferromagnets
O. V. Pylypovskyi, D. Y. Kononenko, K. V. Yershov, U. K. Rößler, A.V. Tomilo, J. Faßbender, J. van den Brink, D. Makarov, D. D. Sheka,
Nano Lett. 2020, 20, 11, 8157 (2020)

Domain wall diode based on functionally graded Dzyaloshinskii-Moriya interaction
Kostiantyn V. Yershov, Volodymyr P. Kravchuk, Denis D. Sheka, Jeroen van den Brink, Avadh Saxena
Appl. Phys. Lett. 116, 222406 (2020)

Polymorphic PtBi2: Growth, structure, and superconducting properties
G. Shipunov, I. Kovalchuk, B. R. Piening, V. Labracherie, A. Veyrat, D. Wolf, A. Lubk, S. Subakti, R. Giraud, J. Dufouleur, S. Shokri, F. Caglieris, C. Hess, D. V. Efremov, B. Büchner, and S. Aswartham
Phys. Rev. Materials 4, 124202 (2020)

Strongly correlated superconductor with polytypic 3D Dirac points
Sergey Borisenko, Volodymyr Bezguba, Alexander Fedorov, Yevhen Kushnirenko, Vladimir Voroshnin, Mihai Sturza, Saicharan Aswartham, and Alexander Yaresko
npj Quantum Materials 5, 67 (2020)

Solitary wave excitations of skyrmion strings in chiral magnets
V. P. Kravchuk, U. K. Rößler, J. van den Brink, and M. Garst
Phys. Rev. B 102, 220408(R) (2020)

Turning charge-density waves into Cooper pairs
A. Chikina, A. Fedorov, D. Bhoi, V. Voroshnin, E. Haubold, Y. Kushnirenko,K. H. Kim, S. Borisenko
npj Quantum Materials 5, 22 (2020)

2019

Curvature induced magnonic crystal in nanowires
Anastasiia Korniienko, Volodymyr P. Kravchuk, Oleksandr V. Pylypovskyi, Denis D. Sheka, Jeroen van den Brink, and Yuri Gaididei,
SciPost Phys. 7, 035 (2019)

Magnetization-induced shape transformations in flexible ferromagnetic rings
Yuri Gaididei, Kostiantyn V. Yershov, Denis D. Sheka, Volodymyr P. Kravchuk, and Avadh Saxena,
Phys. Rev. B 99, 014404 (2019)

Spin eigenexcitations of an antiferromagnetic skyrmion
Volodymyr P. Kravchuk, Olena Gomonay, Denis D. Sheka, Davi R. Rodrigues, Karin Everschor-Sitte, Jairo Sinova, Jeroen van den Brink, and Yuri Gaididei
Phys. Rev. B 99, 184429 (2019)

Spontaneous deformation of flexible ferromagnetic ribbons induced by Dzyaloshinskii-Moriya interaction
Kostiantyn V. Yershov, Volodymyr P. Kravchuk, Denis D. Sheka, Jeroen van den Brink, and Yuri Gaididei
Phys. Rev. B 100, 140407(R) (2019)

Evolution of the charge carrier plasmon in the one-dimensional metal TTF-TCNQ as a function of temperature and momentum
Nikolay Kovbasa, Lukas Graf and Martin Knupfer
Mater. Res. Express 6, 106319 (2019)

Possible experimental realization of a basic Z2 topological semimetal in GaGeTe
E. Haubold, A. Fedorov, F. Pielnhofer, I. Rusinov, T. Menshchikova, V. Duppel, D. Friedrich, R. Weihrich, A. Pfitzner, A. Zeugner, A. Isaeva, S. Thirupathaiah, Y. Kushnirenko, E. Rienks, T. Kim, E. Chulkov, B. Büchner, S. Borisenko
APL Materials 7, 121106 (2019)

Temperature induced shift of electronic band structure in Fe(Se,Te)
Y. V. Pustovit, A. A. Kordyuk
Low Temperature Physics 45, 1172 (2019)