Leadbeater, M and Lambert, Colin (1996) Symmetry breaking in the tunnelling conductance of a superconducting vortex. Journal of Physics: Condensed Matter, 8 (24). L345-L352. ISSN 0953-8984Full text not available from this repository.
Recent STM experiments on c-axis tunnelling into a vortex core of YBCO have yielded a sub-gap differential conductance which is not invariant under a reversal of the applied bias. By computing the differential conductance G(E) of a normal-superconducting contact to all orders in the tunnelling strength, we predict that in the absence of open channels in the superconductor, G(E) is necessarily an even function of E and that an asymmetric current-voltage characteristic implies the existence of propagating bound-states within the vortex core.
|Journal or Publication Title:||Journal of Physics: Condensed Matter|
|Subjects:||Q Science > QC Physics|
|Departments:||Faculty of Science and Technology > Physics|
|Deposited On:||24 Oct 2012 16:47|
|Last Modified:||07 Jan 2015 17:52|
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