38 citations · 64 across the 4 of their papers we have counts for
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cond-mat.supr-con2007
On the spectral gap in Andreev graphs
Holger Flechsig, Sven Gnutzmann
We introduce Andreev scattering (electron-hole conversion at an interface of a normal conductor to a superconductor) at the outer vertices of a quantum star graph and examine its e…
math-ph2007
Spectra of graphs and semi-conducting polymers
Philipp Schapotschnikow, Sven Gnutzmann
We study the band gap in some semi-conducting polymers with two models: Hückel molecular orbital theory and the so-called free electron model. The two models are directly related t…