Topological Invariants of Edge States for Periodic Two-Dimensional Models
Topological Invariants of Edge States for Periodic Two-Dimensional Models
复制标题
周期性二维模型边缘态的拓扑不变量
DOI:
10.1007/s11040-012-9123-9
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
C. Villegas-Blas
中科院分区:
文献类型:
--
作者:
J. C. Avila;H. Schulz-Baldes;C. Villegas-Blas
Transfer matrix methods and intersection theory are used to calculate the bands of edge states for a wide class of periodic two-dimensional tight-binding models including a sublattice and spin degree of freedom. This allows to define topological invariants by considering the associated Bott–Maslov indices which can be easily calculated numerically. For time-reversal symmetric systems in the symplectic universality class this leads to a-invariant for the edge states. It is shown that the edge state invariants are related to Chern numbers of the bulk systems and also to (spin) edge currents, in the spirit of the theory of topological insulators.
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影响因子:
8.6
作者:
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通讯作者:
Mele, EJ
DOI:
--
发表时间:
2007
期刊:
影响因子:
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作者:
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DOI:
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2009
期刊:
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DOI:
--
发表时间:
2012
期刊:
影响因子:
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作者:
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