243 citations · 2.3k across the 105 of their papers we have counts for
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On the compressibility of deformable spin chains in a vicinity of quantum critical points
Oleg Derzhko, Jozef Strecka, Lucia Galisova
We calculate the ground-state compressibility of a deformable spin-1/2 Heisenberg-Ising chain with Dzyaloshinskii-Moriya interaction to discuss how a quantum critical point inheren…
Semiquantitative theory for high-field low-temperature properties of a distorted diamond spin chain
Oleg Derzhko, Johannes Richter, Olesia Krupnitska
We consider the antiferromagnetic Heisenberg model on a distorted diamond chain and use the localized-magnon picture adapted to a distorted geometry to discuss some of its high-fie…
Magnetocaloric effect in spin-1/2 chains with three-spin interactions
Myroslava Topilko, Taras Krokhmalskii, Oleg Derzhko +1
We consider the exactly solvable spin-1/2 chain with the three-spin interactions of the and types in an external (transverse) magnetic field. We calculate…
Flat-Band Ferromagnetism as a Pauli-Correlated Percolation Problem
M. Maksymenko, A. Honecker, R. Moessner +2
We investigate the location and nature of the para-ferro transition of interacting electrons in dispersionless bands using the example of the Hubbard model on the Tasaki lattice. T…