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- W2622469069 abstract "We study the response to an applied flux of an interacting system of Dirac-Weyl fermions confined in a one-dimensional (1D) ring. Combining analytical calculations with density-matrix renormalization group results, we show that tuning of interactions leads to a unique many-body system that displays either a suppression or an enhancement of the Drude weight - the zero-frequency peak in the ac conductivity - with respect to the non-interacting value. An asymmetry in the interaction strength between same- and different-pseudospin Dirac-Weyl fermions leads to Drude weight enhancement. Viceversa, symmetric interactions lead to Drude weight suppression. Our predictions can be tested in mixtures of ultracold fermions in 1D ring traps." @default.
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- W2622469069 date "2017-12-26" @default.
- W2622469069 modified "2023-10-02" @default.
- W2622469069 title "Tuning the Drude weight of Dirac-Weyl fermions in one-dimensional ring traps" @default.
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- W2622469069 doi "https://doi.org/10.1103/physrevb.96.241112" @default.
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