نتایج جستجو برای: tight binding model
تعداد نتایج: 2499309 فیلتر نتایج به سال:
We present a Mathematica program package MagneticTB, which can generate the tight-binding model for arbitrary magnetic space group. The only input parameters in MagneticTB are (magnetic) group number and orbital information each Wyckoff positions. Some useful functions including getting matrix expression symmetry operators, manipulating energy band structure by interfacing with other software a...
We consider a time reversal symmetry (TRS) broken Kane-Mele model superimposed with Haldane and chart out the phase diagram using spin Chern number to investigate fate of quantum anomalous Hall insulator (QAHI) (QSHI) phases. Interestingly, in addition QSHI QAHI phase, unveils (QASHI) where only one sector is topological. also find multicritical points three / four topological boundaries coales...
Tight-binding models represent one of the basic approaches for studying topological states a matter. In given account, we consider tight-binding model set by matrix Hamiltonian over 2D Brillouin zone. The corresponding multiband energy spectrum gives rise to non-Abelian gauge construction formed Berry connection [Formula: see text]. main invariant quantities in such cases are eigenvalues Wilson...
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