Frustrated magnetism of spin-1/2 Heisenberg diamond and octahedral chains as a statistical mechanical monomer-dimer problem

Strecka J, Verkholyak T, Richter J, Karl K, Derzhko O, Schnack J (2022)
Physical Review B 105(6): 064420.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Strecka, Jozef; Verkholyak, Taras; Richter, Johannes; Karl, Katarina; Derzhko, Oleg; Schnack, JürgenUniBi
Abstract / Bemerkung
It is evidenced that effective lattice-gas models of hard-core monomers and dimers afford a proper description of low-temperature features of spin-1/2 Heisenberg diamond and octahedral chains. In addition to monomeric particles assigned within the localized-magnon theory to bound one- and two-magnon eigenstates, the effective monomer-dimer lattice-gas model includes dimeric particles assigned to a singlet-tetramer (singlet-hexamer) state as a cornerstone of dimer-tetramer (tetramer-hexamer) ground state of a spin-1/2 Heisenberg diamond (octahedral) chain. The feasibility of the effective description is confirmed through the exact diagonalization and finite-temperature Lanczos methods. Both quantum spin chains display rich ground-state phase diagrams including discontinuous as well as continuous field-driven phase transitions, whereby the specific heat shows in vicinity of the former phase transitions an extraordinary low-temperature peak coming from a highly degenerate manifold of low-lying excitations.
Erscheinungsjahr
2022
Zeitschriftentitel
Physical Review B
Band
105
Ausgabe
6
Art.-Nr.
064420
ISSN
2469-9950
eISSN
2469-9969
Page URI
https://pub.uni-bielefeld.de/record/2961882

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Strecka J, Verkholyak T, Richter J, Karl K, Derzhko O, Schnack J. Frustrated magnetism of spin-1/2 Heisenberg diamond and octahedral chains as a statistical mechanical monomer-dimer problem. Physical Review B . 2022;105(6): 064420.
Strecka, J., Verkholyak, T., Richter, J., Karl, K., Derzhko, O., & Schnack, J. (2022). Frustrated magnetism of spin-1/2 Heisenberg diamond and octahedral chains as a statistical mechanical monomer-dimer problem. Physical Review B , 105(6), 064420. https://doi.org/10.1103/PhysRevB.105.064420
Strecka, Jozef, Verkholyak, Taras, Richter, Johannes, Karl, Katarina, Derzhko, Oleg, and Schnack, Jürgen. 2022. “Frustrated magnetism of spin-1/2 Heisenberg diamond and octahedral chains as a statistical mechanical monomer-dimer problem”. Physical Review B 105 (6): 064420.
Strecka, J., Verkholyak, T., Richter, J., Karl, K., Derzhko, O., and Schnack, J. (2022). Frustrated magnetism of spin-1/2 Heisenberg diamond and octahedral chains as a statistical mechanical monomer-dimer problem. Physical Review B 105:064420.
Strecka, J., et al., 2022. Frustrated magnetism of spin-1/2 Heisenberg diamond and octahedral chains as a statistical mechanical monomer-dimer problem. Physical Review B , 105(6): 064420.
J. Strecka, et al., “Frustrated magnetism of spin-1/2 Heisenberg diamond and octahedral chains as a statistical mechanical monomer-dimer problem”, Physical Review B , vol. 105, 2022, : 064420.
Strecka, J., Verkholyak, T., Richter, J., Karl, K., Derzhko, O., Schnack, J.: Frustrated magnetism of spin-1/2 Heisenberg diamond and octahedral chains as a statistical mechanical monomer-dimer problem. Physical Review B . 105, : 064420 (2022).
Strecka, Jozef, Verkholyak, Taras, Richter, Johannes, Karl, Katarina, Derzhko, Oleg, and Schnack, Jürgen. “Frustrated magnetism of spin-1/2 Heisenberg diamond and octahedral chains as a statistical mechanical monomer-dimer problem”. Physical Review B 105.6 (2022): 064420.
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