Programme

P.68 -- Poster, VCTP-46

Date: Wednesday, 6 October 2021

Time: 08:30 - 10:00

Magnons in a monolayer honeycomb spin lattice

Niem T. Nguyen(1), Giang H. Bach (1), Thao H. Pham (2), Cong T. Bach (1)

(1) VNU University of Science, 334 Nguyen Trai Street, Hanoi City, Vietnam; (2) University of Education, Hue University, 34 Le Loi Street, Hue City, Vietnam

Theory for elementary excitations (Magnons) in the 2D honeycomb spin lattice is developed using the functional integral method and the XZ Heisenberg model up to next- nearest neighbor site-spin interactions. General temperature- & field-dependent magnon spectra are obtained within the functional Gaussian approximation (equivalent to the RPA) and available for the ferro-, ferri- and antiferromagnetic honeycomb spin lattice structures. Comparisons with other theories of the ferro- and antiferromagnetic Dirac Magnons are discussed.

Presenter: Nguyen Tu Niem