Topologically Protected States in One-Dimensional Systems(Memoirs of the American Mathematical Society)

单维系统的拓扑受保护状态(丛书)

几何学

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886.00
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出版时间
2017年05月30日
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平装
ISBN
9781470423230
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页      码
118
语      种
英文
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图书简介
The authors study a class of periodic Schrodinger operators, which in distinguished cases can be proved to have linear band-crossings or ``Dirac points’’. They then show that the introduction of an ``edge’’, via adiabatic modulation of these periodic potentials by a domain wall, results in the bifurcation of spatially localized ``edge states’’. These bound states are associated with the topologically protected zero-energy mode of an asymptotic one-dimensional Dirac operator. The authors’ model captures many aspects of the phenomenon of topologically protected edge states for two-dimensional bulk structures such as the honeycomb structure of graphene. The states the authors construct can be realized as highly robust TM-electromagnetic modes for a class of photonic waveguides with a phase-defect.
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