DMRG simulations indicate that two-leg t-J ladders can enter a Luttinger liquid regime with gapless spin and charge modes exhibiting spin-charge separation signatures under tuned plaquette hopping, exchange, and doping.
Nagaosa, Spin-charge separation in strongly correlated electronic systems, Journal of Physics: Condensed Mat- ter10, 11385 (1998)
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Spin-charge separation in two-leg t-J ladders
DMRG simulations indicate that two-leg t-J ladders can enter a Luttinger liquid regime with gapless spin and charge modes exhibiting spin-charge separation signatures under tuned plaquette hopping, exchange, and doping.