Reference : Phase diagram of spin-1 chains with Dzyaloshinskii-Moriya interaction
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Phase diagram of spin-1 chains with Dzyaloshinskii-Moriya interaction
Tschirhart, Hugo []
Ong, Ernest []
Sengupta, Pinaki []
Schmidt, Thomas mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Physical Review. B
American Physical Society
Yes (verified by ORBilu)
[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.

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