Subharmonic gap structure in superconductor/ferromagnet/superconductor junctions

Effect of rf on subharmonic gap structure in superconducting junctions

2014 The rf-power dependence of the structure in the current-voltage characteristic located at the voltage V = (2 0394 ± nhv)/me has been measured and found very similar to the familiar microwave-assisted tunneling (m = 1). 2 0394 is the superconducting energy gap, v the applied frequency, m = 1, 2, 3, ... and n = 0, 1, 2, ... That is, the variation with power of all these structures is found c...

Subharmonic gap structure in d-wave superconductors

We present a self-consistent theory of current-voltage characteristics of d-wave/d-wave contacts at arbitrary transparency. In particular, we address the open problem of the observation of subharmonic gap structure ~SGS! in cuprate junctions. Our analysis shows that ~i! the SGS is possible in d-wave superconductors; ~ii! the existence of bound states within the gap results in an even-odd effect...

Subharmonic energy-gap structure in superconducting weak links.

Structure of rapidly frozen gap junctions

The structure of gap junctions in the rabbit ciliary epithelium, corneal endothelium, and mouse stomach and liver was studied with the freeze-fracturing technique after rapid freezing to near 4 degrees K from the living state. In the ciliary epithelium, the connexons were randomly distributed, separated by smooth membrane matrix. In the corneal endothelium, both random and crystalline arrangeme...

Gap Junctions

Gap junctions are sites of intercellular communication where cells are interconnected by small aqueous channels (Figure 1b). The term is morphological, for in transmission electron micrographs of thin sections, the unit membranes of the joined cells are seen to remain separated by a gap of about 2 nm (Figure 1a, inset). The gap of gap junctions distinguishes them from tight junctions, or zonula...