V. Tkáč
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View article: The interplay between the topology of nanoclusters and the characteristic of boson peak in As-S glasses
The interplay between the topology of nanoclusters and the characteristic of boson peak in As-S glasses Open
The combination of mean coordination and concentration dependencies of elastic modules and low-frequency Raman scattering of As-S glasses brings new information about the spectroscopic boson peak (SBP) behavior. The analysis of the charact…
View article: Multiphase superconductivity at the interface between ultrathin FeTe islands and Bi2Te3
Multiphase superconductivity at the interface between ultrathin FeTe islands and Bi2Te3 Open
FeTe monolayer islands situated on a topological insulator Bi2Te3 (0001) surface were recently reported to exhibit the opening of an energy gap below temperatures T ~ 6 K, which can be due to a superconducting phase transition. In this wor…
View article: Chromium doped NH<sub>2</sub>(CH<sub>3</sub>)<sub>2</sub>Ga(SO<sub>4</sub>)<sub>2</sub> × 6H<sub>2</sub>O crystal – representative of a new family of magnetoelectric materials
Chromium doped NH<sub>2</sub>(CH<sub>3</sub>)<sub>2</sub>Ga(SO<sub>4</sub>)<sub>2</sub> × 6H<sub>2</sub>O crystal – representative of a new family of magnetoelectric materials Open
The paper is devoted to the detailed study of electric and magnetic properties and magnetoelectric interactions in NH 2 (CH 3 ) 2 Ga(SO 4 ) 2 × 6H 2 O crystals doped with chromium—DMAGaS:Cr. The temperature dependence of the specific heat …
View article: Experimental Study of Magnetocaloric Effect in Tetraaquabis(Hydrogen Maleato)Nickel(II), [Ni(C4H3O4)2(H2O)4]—A Potential Realization of a Spin-1 Spatially Anisotropic Square Lattice with Ferromagnetic Interactions
Experimental Study of Magnetocaloric Effect in Tetraaquabis(Hydrogen Maleato)Nickel(II), [Ni(C4H3O4)2(H2O)4]—A Potential Realization of a Spin-1 Spatially Anisotropic Square Lattice with Ferromagnetic Interactions Open
An experimental study of the magnetocaloric effect in tetraaquabis(hydrogen maleato)nickel(II), [Ni(C4H3O4)2(H2O)4] powder sample is presented. The magnetocaloric properties of the studied sample were investigated using specific heat and m…
View article: The correlation between electric polarization and magnetic properties in [N(C2H5)4]2CoCl2Br2 crystal at low temperatures
The correlation between electric polarization and magnetic properties in [N(C2H5)4]2CoCl2Br2 crystal at low temperatures Open
The ferroelectric and magnetic properties of the potential magnetic multiferroic – [N(C2H5)4]2CoCl2Br2 solid solution are reported. This crystal was found to possess the proper ferroelectric phase transition at T1 = 249.5 K and possible ma…
View article: Giant Rotational Magnetocaloric Effect in Ni(en)(H2O)4·2H2O: Experiment and Theory
Giant Rotational Magnetocaloric Effect in Ni(en)(H2O)4·2H2O: Experiment and Theory Open
An experimental study of the rotational magnetocaloric effect in Ni(en)(H2O)4SO4∙2H2O (en = ethylenediamine) single crystal is presented. The study was carried out at temperatures above 2 K and was associated with adiabatic crystal rotatio…
View article: Lattice Dynamics in Cu(<i>en</i>)(H<sub>2</sub>O)<sub>2</sub>SO<sub>4</sub> - A Low-Dimensional Quantum Magnet with Spin 1/2
Lattice Dynamics in Cu(<i>en</i>)(H<sub>2</sub>O)<sub>2</sub>SO<sub>4</sub> - A Low-Dimensional Quantum Magnet with Spin 1/2 Open
The present work is devoted to the refinement of lattice contribution to the specific heat of magnetic insulator Cu(en)(H2O)2SO4.The analysis of thermodynamic and elastic measurements revealed that the uncertainty in the determination of t…
View article: Interlayer Dzyaloshinskii-Moriya Interactions in a Quasi-Two-Dimensional Spin 1/2 Antiferromagnet Cu(<i>en</i>)(H<sub>2</sub>O)<sub>2</sub>SO<sub>4</sub>
Interlayer Dzyaloshinskii-Moriya Interactions in a Quasi-Two-Dimensional Spin 1/2 Antiferromagnet Cu(<i>en</i>)(H<sub>2</sub>O)<sub>2</sub>SO<sub>4</sub> Open
We present a theoretical study of magnetic interlayer exchange couplings in a quasi-two-dimensional quantum antiferromagnet Cu(en)(H2O)(2)SO4 (en = C2H8N2). We use symmetry arguments to construct the most general form of interlayer spin ex…
View article: Influence of an Anomalous Temperature Dependence of the Phase Coherence Length on the Conductivity of Magnetic Topological Insulators
Influence of an Anomalous Temperature Dependence of the Phase Coherence Length on the Conductivity of Magnetic Topological Insulators Open
Magnetotransport constitutes a useful probe to understand the interplay between electronic band topology and magnetism in spintronic devices. A recent theory of Lu and Shen [Phys. Rev. Lett. 112, 146601 (2014)PRLTAO0031-900710.1103/PhysRev…
View article: Interplay of Spin and Spatial Anisotropy in Low-Dimensional Quantum Magnets with Spin 1/2
Interplay of Spin and Spatial Anisotropy in Low-Dimensional Quantum Magnets with Spin 1/2 Open
Quantum Heisenberg chain and square lattices are important paradigms of a low-dimensional magnetism. Their ground states are determined by the strength of quantum fluctuations. Correspondingly, the ground state of a rectangular lattice int…
View article: Magnetocaloric Effect in CsDy(MoO<sub>4</sub>)<sub>2</sub>
Magnetocaloric Effect in CsDy(MoO<sub>4</sub>)<sub>2</sub> Open
CsDy(MoO4q2 belongs to the family of binary alkaline rare-earth molybdates, with detectable low-temperature structural phase transitions, caused by the cooperative Jahn-Teller effect.Magnetocaloric studies of a single crystal of CsDy(MoO4q…
View article: Slow Magnetic Relaxation in the Highly Anisotropic Layered Crystal CsNd(MoO<sub>4</sub>)<sub>2</sub>
Slow Magnetic Relaxation in the Highly Anisotropic Layered Crystal CsNd(MoO<sub>4</sub>)<sub>2</sub> Open
The present work is devoted to the magnetic relaxation study of the single crystal CsNd(MoO4q2 a layered rare-earth dimolybdate.AC susceptibility measurements performed in magnetic fields up to B 5 T applied along the easy and hard axis wi…
View article: Impact of the crystal electric field on magnetocaloric properties of CsGd(MoO$_4$)$_2$
Impact of the crystal electric field on magnetocaloric properties of CsGd(MoO$_4$)$_2$ Open
Magnetocaloric effect (MCE) was investigated in the single crystal of CsGd(MoO$_4$)$_2$ in the temperature range from 2 to 30 K and fields up to 5 T applied along the easy and hard magnetic axis. The analysis of specific heat and magnetiza…
View article: Hysteresis of Low-Temperature Thermal Conductivity and Boson Peak in Glassy (g) As2S3: Nanocluster Contribution
Hysteresis of Low-Temperature Thermal Conductivity and Boson Peak in Glassy (g) As2S3: Nanocluster Contribution Open
Experimental results of the thermal conductivity (k(T)) of nanostructured g-As2S3 during cooling and heating processes within the temperature range from 2.5 to 100 K have been analysed. The paper has considered thermal conductivity is weak…
View article: Magnetic-Field Induced Slow Relaxation in the Ising-Like Quasi-One-Dimensional Ferromagnet KEr(MoO_4)_2
Magnetic-Field Induced Slow Relaxation in the Ising-Like Quasi-One-Dimensional Ferromagnet KEr(MoO_4)_2 Open
We present the study of spin dynamics of KEr(MoO4)2 in the magnetic field applied along the hard axis c.The temperature dependence of AC susceptibility in zero magnetic field studied at frequencies f = 10, 100, and 1000 Hz indicated the ab…