نتایج جستجو برای: weak topological center
تعداد نتایج: 486654 فیلتر نتایج به سال:
Here, we report a successful synthesis of single crystals topological semimetal (TSM) candidate, PdSn4, using self-flux route. The synthesized crystal is well characterized through x-ray diffraction (XRD), field emission scanning electron microscopy, and photoelectron spectroscopy. A detailed Rietveld analysis the powder XRD pattern PdSn4 confirmed same to crystallize in an Aea2 space group ins...
Strong topological insulators (TIs) support topological surfaces states on any crystal surface. In contrast, a weak, time-reversal-symmetry-driven TI with at least one non-zero v1, v2, v3 ℤ2 index should host spin-locked topological surface states on the surfaces that are not parallel to the crystal plane with Miller indices (v1 v2 v3). On the other hand, mirror symmetry can protect an even num...
We investigate topological mixing for Z and R actions associated with primitive substitutions on two letters. The characterization is complete if the second eigenvalue θ2 of the substitution matrix satisfies |θ2| 6= 1. If |θ2| < 1, then (as is well-known) the substitution system is not topologically weak mixing, so it is not topologically mixing. We prove that if |θ2| > 1, then topological mixi...
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