The spin-1/2 Heisenberg ferromagnet on the pyrochlore lattice: A Green's function study

• Published in: Condensed Matter Physics
• Date: 2018
• Main Authors: Hutak, T., Müller, P, Richter, J., Krokhmalskii, T., Derzhko, O.
• Format: Article
• Language: English
• Published: Інститут фізики конденсованих систем НАН України 2018
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/157458
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: The spin-1/2 Heisenberg ferromagnet on the pyrochlore lattice: A Green's function study / T. Hutak, P. Müller, J. Richter, T. Krokhmalskii, O. Derzhko // Condensed Matter Physics. — 2018. — Т. 21, № 3. — С. 33705: 1–13. — Бібліогр.: 47 назв. — англ.

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 technique within the random-phase (or Tyablikov) approximation as well as the linear spin-wave theory and quantum Mont...