Search academic texts

Information × Registration Number 0223U005501, 0123U103181 , R & D reports Title Frustrated quantum magnets at finite temperatures popup.stage_title Head Hutak Taras I., Доктор філософії Registration Date 23-12-2023 Organization Institute of Condensed Matter Physics of the National Academy of Sciences of Ukraine popup.description2 We studied S=1/2 Heisenberg antiferromagnet on the hyperkagome lattice. Temperature dependence of the specific heat and uniform susceptibility was obtained in the framework of the entropy method based on the high-temperature expansion of the 16th order (in the assumption of both gapless and gapped excitations). Specific heat has two maximums, and uniform susceptibility shows a typical for the frustrated magnets broad maximum. We also got an estimation for the ground-state energy value based on the self-consistent procedure of analyzing close Pade approximants. We studied the specific heat of the spin-S Heisenberg antiferromagnet on the kagome lattice using the entropy method. Low-temperature shoulder disappeared with the spin value increasing, while the position of the main maximum shifted to the lower temperatures. Product Description popup.authors popup.nrat_date 2023-12-23 Close