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首页> 外文期刊>Physica, B. Condensed Matter >Coupled chains in electric and magnetic fields revisited
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Coupled chains in electric and magnetic fields revisited

机译:再谈电场和磁场中的耦合链

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摘要

Coupled chains in electric and magnetic fields are discussed in terms of interplays between periodicity conditions and the factorization of the wavefunction in the wavenumber representation. Proceeding in this manner yields a quickly tractable matching condition providing the quantization rule to the alternative derivation of complex energy bands. Besides achieving a deeper understanding of Wannier–Stark ladders in terms of complex resonance energies, we now have the opportunity to establish related energy levels by resorting to a suitable conversion technique. This amounts to perform an immediate integration of such energy bands over the Brillouin-zone. Such energy levels exhibit, this time, a safe dependence on the chain parameter. Dynamic localization effects, conserved currents and stripe conductivity formulae have also been discussed.
机译:根据波数表示中的周期性条件和波函数的因式分解之间的相互作用,讨论了电场和磁场中的耦合链。以这种方式进行操作会产生一个易于处理的匹配条件,为复杂能带的替代推导提供了量化规则。除了从复共振能量的角度更深入地了解Wannier–Stark阶梯之外,我们现在还可以通过采用合适的转换技术来建立相关的能级。这等于在布里渊区上立即对这些能带进行积分。这次,这种能级表现出对链参数的安全依赖性。还讨论了动态局部效应,守恒电流和条形电导率公式。

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