185 citations · 653 across the 19 of their papers we have counts for
Showing 2004Show all
2 papers · 1 filter
cond-mat.stat-mech2004
Regularly alternating spin-1/2 anisotropic XY chains: The ground-state and thermodynamic properties
Oleg Derzhko, Johannes Richter, Taras Krokhmalskii +1
Using the Jordan-Wigner transformation and continued fractions we calculate rigorously the thermodynamic quantities for the spin-1/2 transverse Ising chain with periodically varyin…
cond-mat.stat-mech2004
Finite low-temperature entropy of some strongly frustrated quantum spin lattices in the vicinity of the saturation field
Oleg Derzhko, Johannes Richter
For a class of highly frustrated antiferromagnetic quantum spin lattices the ground state exhibits a huge degeneracy in high magnetic fields due to the existence of localized magno…