Evolution of the spin dynamics in the van der Waals system M2P2S6 (M2 = Mn2, MnNi, Ni2) series probed by electron spin resonance spectroscopy
Y. Senyk, J. J. Abraham, Y. Shemerliuk, S. Selter, S. Aswartham, B. Büchner, V. Kataev, A. Alfonsov
Phys. Rev. Materials 7, 014003 (2023)


Tuning Charge Density Wave in TiSe2: TiSeS single crystals growth and characterization
Y. Shemerliuk, A. Kuibarov, O. Feia, M. Behnami, H. Reichlova, O. Suvorov, S. Selter, D.V. Efremov, S. Borisenko, B. Büchner, S. Aswartham

Landau level collapse in graphene in the presence of in-plane radial electric and perpendicular magnetic fields
I. O. Nimyi, V. Könye, S. G. Sharapov, and V. P. Gusynin
Phys. Rev. B 106, 085401 (2022)

Frozen Deconfined Quantum Criticality
V. Shyta, J. van den Brink, F. S. Nogueira
Phys. Rev. Lett. 129, 227203 (2022)

Field-induced spin reorientation transitions in antiferromagnetic ring-shaped spin chains
Y. A. Borysenko, D. D. Sheka, J. Fassbender, J. van den Brink, D. Makarov, O. V. Pylypovskyi
Phys. Rev. B 106, 174426 (2022)

Circular stripe domains and cone state vortices in disk-shaped exchange coupled magnetic heterostructures
O. Zaiets, V. P. Kravchuk, O. V. Pylypovskyi, D. Makrov, D. D. Sheka
J. Phys. D. Appl. Phys. 55, 445003 (2022)

ScAuIn - a new representative of the RAuIn series
V.V. Romaka, M.L. Amigo, D. Franco, L.T. Corredor, S. Wurmehl, B. Büchner, S. Seiro
J. Solid State Chem. 314, 123416 (2022)

Fermi surface tomography
S. Borisenko, A. Fedorov, A. Kuibarov, M. Bianchi, V. Bezguba, P. Majchrzak, P. Hofmann, P. Baumgartel, V. Voroshnin, Y. Kushnirenko, J. Sanchez-Bariiga, A. Varykhalov, R. Ovsyannikov, I. Morozov, S. Aswartham, O. Feia, L. Harnagea, S. Wurmehl, A. Kordyuk, A. Yaresko, H. Berger, B. Büchner
Nature Comm. 13, 4132 (2022)

TSFZ Growth of Eu-Substituted Large-Size LSCO Crystals
O. Voloshyna, V.V. Romaka, K. Karmakar, S. Seiro, A. Maljuk, B. Büchner
Crystals 12, 998 (2022)

Isolated fourfold fermion in BiTeI
A. Kuibarov, A. Fedorov, V. Bezguba, H. Berger, A. Yaresko, V. Voroshnin, A. Kordyuk, P. Baumgartel, B. Büchner, S. Borisenko
Phys. Rev. B 105, 235112 (2022)

Charge-Density-Wave-Induced Peak-Dip-Hump Structure and the Multiband Superconductivity in a Kagome Superconductor CsV3Sb5
R. Lou, A. Fedorov, Q.W. Yin, A. Kuibarov, Z.J. Tu, C.S. Gong, E.F. Schwier, B. Büchner, H.C. Lei, S. Borisenko
Phys. Rev. Lett. 128, 036402 (2022)

31P NMR investigation of quasi-two-dimensional magnetic correlations in T2P2S6 (T=Mn,Ni)
F. Bougamha, S. Selter, Y. Shemerliuk, S. Aswartham, A. Benali, B. Büchner, H.-J. Grafe and A.P. Dioguardi
Phys. Rev. B. 105, 024410 (2022)

Thermodynamic and DFT modeling in quaternary Co-based Heusler phase space: Understanding the interplay between disorder, bonding and magnetism
V. Romaka, A. Omar, W. Loeser, B. Büchner, S. Wurmehl
Comput. Mater. Sci. 203, 111089 (2022)

Fundamentals of Curvilinear Ferromagnetism: Statics and Dynamics of Geometrically Curved Wires and Narrow Ribbons
D.D. Sheka, O. P. Pylypovskyi, O. M. Volkov, K. V. Yershov, V.P. Kravchuk, D. Makarov
Small 18, 2105219 (2022)


Deconfined Criticality and Bosonization Duality in Easy-Plane Chern-Simons Two-Dimensional Antiferromagnets
V. Shyta, J. van den Brink, F. S. Nogueira
Phys. Rev. Lett. 127, 045701 (2021)

Sixfold fermion near the Fermi level in cubic PtBi2
S. Thirupathaiah, Y. S. Kushnirenko, K. Koepernik, B. R. Piening, B. Buechner, S. Aswartham, J. van den Brink, S. V. Borisenko, I. C. Fulga
SciPost Phys. 10, 004 (2021)

Physical properties of {Ti,Zr,Hf}2Ni2Sn compounds
V.V. Romaka, G. Rogl, V. Bursikova, J. Bursik, H. Michor, A. Grytsiv, E. Bauer, G. Giester, P. Rogl
Dalton Transactions 51, 361 (2021)

Crystal Growth of the Quasi-2D Quarternary Compound AgCrP2S6 by Chemical Vapor Transport
S. Selter, Y. Shemerliuk, B. Büchner, and S.Aswartham
Crystals 11,500 (2021)

Impact of Carbon Co-Doping on the Optical and Scintillation Properties of a YAG:Ce scintillator
O. Sidletskiy,I. Gerasymov, Y. Boyaryntseva, P. Arhipov, S. Tkachenko, O. Zelenskaya, K. Bryleva, K. Belikov, K. Lebbou,C. Dujardin,B. Büchner, and B. Grynyov
Cryst. Growth Des. 21, 3063(2021)

TSFZ growth of Nd-substituted LSCO superconducting crystals
O. Voloshyna, K. Karmakar, A. Maljuk, V.V. Romaka, C.G.F. Blum, S. Seiro, and B. Büchner
J. Cryst. Growth 562, 126082 (2021)

Experimental and theoretical investigation of the Y–Ni–Sb and Tm–Ni–Sb systems
V. V. Romaka, L. Romaka, A. Horyn, and Yu. Stadnyk
J. Alloys Compds. 855, 157334 (2021)

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)


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)

ShytaPRLВітаємо Віру Шиту, цьогорічну випускницю Кафедри теоретичної та математичної фізики та учасницю програми стажувань UKRATOP, з прийняттям до публікації в Phys. Rev. Lett. її статті (https://arxiv.org/abs/2008.13446) за результатами магістерської роботи!

Нещодавню доповідь Віри із захисту цієї роботи можна подивитись тут https://youtu.be/PJxxbWPUtpI?t=1958

IMG 0371This Friday, March 26, join us for a free but important virtual event: the 3rd UKRATOP Workshop on Topological Phenomena in Quantum Materials.

From 9:45 to 15:20 the UKRATOP students and postdocs, as well as some invited international researchers will present their recent results. See the Workshop Program for details. 

Join at: https://bbb.ifw-dresden.de/b/sei-4v9-mu3 with access code: 705102

Also note that the next UKRATOP Selection Workshop is scheduled on May 7, 2021 and will be opend for students and postdocs. 

espressoУкраїнські вчені реалізують нові стандарти академічної освіти: "Навчання через дослідження, замість відтоку мізків – циркуляція"ESPRESO.TV, 6 липня, 2020

Завершилася чергова робоча нарада українських і німецьких вчених в рамках міжнародного проекту UKRATOP. UKRATOP – це спільний проєкт Київського академічного університету (КАУ) та одного з найпотужніших дослідницьких інститутів Німеччини, IFW Dresden...