Publications (7)
Interacting surface states of three-dimensional topological insulators
T. Neupert, S. Rachel, R. Thomale +1
We numerically investigate the surface states of a strong topological insulator in the presence of strong electron-electron interactions. We choose a spherical topological insulato…
Anisotropic susceptibilities in the honeycomb Kitaev system -RuCl
P. Lampen-Kelley, S. Rachel, J. Reuther +6
The magnetic insulator -RuCl is a promising candidate to realize Kitaev interactions on a quasi-2D honeycomb lattice. We perform extensive susceptibility measurements on…
Spin freezing in the disordered pyrochlore magnet NaCaCoF: NMR studies and Monte-Carlo simulations
R. Sarkar, J. W. Krizan, F. Brückner +5
We present results of Na and F nuclear magnetic resonance (NMR) measurements on NaCaCoF, a frustrated pyrochlore magnet with a Curie-Weiss temperature, $T_{cw…
Field-induced intermediate phase in -RuCl: Non-coplanar order, phase diagram, and proximate spin liquid
P. Lampen-Kelley, L. Janssen, E. C. Andrade +6
Frustrated magnets with strong spin-orbit coupling promise to host topological states of matter, with fractionalized excitations and emergent gauge fields. Kitaev's proposal for a…
Spinon confinement and the Haldane gap in SU(n) spin chains
S. Rachel, R. Thomale, M. Fuehringer +2
We use extensive DMRG calculations to show that a classification of SU(n) spin chains with regard to the existence of spinon confinement and hence a Haldane gap obtained previously…
DMRG studies of critical SU(N) spin chains
M. Fuehringer, S. Rachel, R. Thomale +2
The DMRG method is applied to integrable models of antiferromagnetic spin chains for fundamental and higher representations of SU(2), SU(3), and SU(4). From the low energy spectrum…