[en] We investigate an antiferromagnetic spin-1 Heisenberg chain in the presence of Dyzaloshinskii-Moriya interactions (DMI) and an external magnetic field. We study the resulting spin chain using a combination of numerical and analytical techniques. Using DMRG simulations to determine the spectral gap and the entanglement spectrum, we map out the phase diagram as a function of magnetic field strength and DMI strength. We provide a qualitative interpretation for these numerical findings by mapping the spin-1 chain on a spin-1/2 ladder and using a bosonization approach.
Disciplines :
Physique
Auteur, co-auteur :
Tschirhart, Hugo
Ong, Ernest
Sengupta, Pinaki
SCHMIDT, Thomas ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Co-auteurs externes :
yes
Langue du document :
Anglais
Titre :
Phase diagram of spin-1 chains with Dzyaloshinskii-Moriya interaction
