Extrinsic photonic crystals: Photonic band structure calculations of a doped semiconductor under a magnetic field

Extrinsic photonic crystals: Photonic band structure calculations of a doped semiconductor under a magnetic field
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外在光子晶体:磁场下掺杂半导体的光子能带结构计算

DOI:
10.1063/1.2437723
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发表时间:
2007-02
影响因子:
4
通讯作者:
Liu XH
Liu XH
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Xu C;Zi J;Wang X;Han DZ;Liu XH

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掺杂半导体是本质上均匀的介质。然而,通过施加具有空间周期性变化的外部磁场,掺杂半导体可以表现出与传统光子晶体相似的行为。作者通过计算掺杂半导体在外部空间周期性磁场下的光子能带结构,从理论上证明了这种可能性。均匀介质在一定的空间周期性外场作用下表现出与传统光子晶体相似的行为,这就定义了另一种光子晶体:非本征光子晶体。
Doped semiconductors are intrinsically homogeneous media. However, by applying an external magnetic field that has a spatially periodic variation, doped semiconductors can behave extrinsically like conventional photonic crystals. The authors show this possibility theoretically by calculating the photonic band structures of a doped semiconductor under an external, spatially periodic magnetic field. Homogeneous media, behaving like conventional photonic crystals under some external, spatially periodic fields, define another kind of photonic crystals: extrinsic photonic crystals.
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