33 citations · 112 across the 12 of their papers we have counts for
12 papers
Manipulation of electromagnetic wave propagation in quantum-spin-chain medium
Taras Krokhmalskii, Taras Verkholyak, Ostap Baran +3
We consider a simple model of one-dimensional magnetic crystal and examine the propagation of an electromagnetic wave through such a medium. Calculating the dispersion relation ${\…
Three-dimensional unfrustrated and frustrated quantum Heisenberg magnets. Specific heat study
T. Krokhmalskii, T. Hutak, O. Derzhko
We examine the Heisenberg magnet on four three-dimensional lattices - simple-cubic, diamond, pyrochlore, and hyperkagome ones - for ferromagnetic and antiferromagnetic sign…
Thermodynamics of the maple-leaf Heisenberg antiferromagnet
Taras Hutak
The Heisenberg antiferromagnet on the maple-leaf lattice has recently gathered a great deal of attention. Competition between three nonequivalent bond interactions results in vario…
Frustrated kagome-lattice bilayer quantum Heisenberg antiferromagnet
Dmytro Yaremchuk, Taras Hutak, Vasyl Baliha +4
We consider the antiferromagnetic Heisenberg model on a frustrated kagome-lattice bilayer with strong nearest-neighbor interlayer coupling and examine its low-temperature m…
Thermodynamics of the hyperkagome-lattice Heisenberg antiferromagnet
Taras Hutak, Taras Krokhmalskii, Jürgen Schnack +2
The hyperkagome-lattice Heisenberg antiferromagnet allows to study the interplay of geometrical frustration and quantum as well as thermal fluctuations in three dimensions.…
Spin-half Heisenberg antiferromagnet on a symmetric sawtooth chain: Rotation-invariant Green's functions and high-temperature series
Taras Hutak, Taras Krokhmalskii, Oleg Derzhko +1
We apply the rotation-invariant Green's function method to study the finite-temperature properties of a sawtooth-chain (also called -chain) antiferromagnetic Heisenber…
Quantum Heisenberg model on a sawtooth-chain lattice: Rotation-invariant Green's function method
Taras Hutak, Taras Krokhmalskii, Oleg Derzhko +1
We apply the rotation-invariant Green's function method (RGM) to study the spin Heisenberg model on a one-dimensional sawtooth lattice, which has two nonequivalent sites in…
Tunneling maps of interacting electrons in real time: anomalous tunneling in quantum point-contacts beyond the steady state regime
Taras Hutak, Gleb Skorobagatko
Strongly correlated transport of interacting electrons through the one-dimensional tunnel contact is considered within the Luttinger liquid model of one-dimensional electrodes on a…
Low-temperature thermodynamics of the two-leg ladder Ising model with trimer rungs: A mystery explained
Taras Hutak, Taras Krokhmalskii, Onofre Rojas +2
Recently, a surprising low-temperature behavior has been revealed in a two-leg ladder Ising model with trimer rungs (Weiguo Yin, arXiv:2006.08921). Motivated by these findings, we…
Adapting Planck's route to investigate the thermodynamics of the spin-half pyrochlore Heisenberg antiferromagnet
Oleg Derzhko, Taras Hutak, Taras Krokhmalskii +2
The spin-half pyrochlore Heisenberg antiferromagnet (PHAF) is one of the most challenging problems in the field of highly frustrated quantum magnetism. Stimulated by the seminal pa…
Towards low-temperature peculiarities of thermodynamic quantities for decorated spin chains
Taras Krokhmalskii, Taras Hutak, Onofre Rojas +2
We discuss the origin of an enigmatic low-temperature behavior of one-dimensional decorated spin systems which was coined the pseudo-transition. Tracing out the decorated parts res…
The spin- Heisenberg ferromagnet on the pyrochlore lattice: A Green's function study
T. Hutak, P. Müller, J. Richter +2
We consider the pyrochlore-lattice quantum Heisenberg ferromagnet and discuss the properties of this spin model at arbitrary temperatures. To this end, we use the Green's function…