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On superfluidity of indirect excitons in transition metals trichalcogenides van der Waals heterostructures

Roman Ya. KezerashviliAnastasia Spiridonova
Aug 2022
摘要
We predict angle-dependent superfluidity for a new class of 2D materials --transition metals trichalcogenides (TMTC). Within a mean-field approachsuperfluidity of indirect excitons in TMTC van der Waals heterostructures(vdWHs) is studied. We use different potentials for charged carriersinteraction to analyze the influence of the screening on the studied phenomena.Our study demonstrates the angle-dependent superfluidity temperature in TMTCvdWHs: for a given density a maximum and minimum $T_c$ of superfluidity occursalong chain and $a$-directions, respectively. This work can guide experimentalresearch toward the realization of anisotropic superfluidity in TMTC vdWH. Wesuggest an experiment for the observation of anisotropic superfluidity in TMTCvdWH.
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