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Theory of pseudospin excitations in coaxial nanotubes

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Scharf, Benedikt ; Fabian, Jaroslav ; Matos-Abiague, Alex
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Date of publication of this fulltext: 04 May 2010 07:46


In two-dimensional electron gases confined to two coaxial tubes the "tube degree of freedom" can be described in terms of pseudospin-1/2 dynamics. The presence of tunneling between the two tubes leads to a collective oscillation known as pseudospin resonance. We employ perturbation theory to examine the dependence of the frequency of this mode with respect to a coaxial magnetic field for the case ...


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