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Showing 1 to 6 of 6 for “"Point contact spectroscopy"”.
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Point contact spectroscopy studies of the iron based superconductors
Point contact spectroscopy (PCS) is used to probe both the normal and superconducting phases of the iron based superconductors. It is shown that apart from probing superconductors by Andreev reflection, PCS is also a useful technique to study exotic electron matter in correlated materials. The …
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Investigation of Iron-Based and Topological Superconductors via Point-Contact Spectroscopy
I report results of point-contact spectroscopy (PCS) measurements preformed on a variety of superconductors which are predicted to exhibit unconventional Cooper pairing mechanisms. Point-contact spectra of the iron pnictide BaFe_{1-x}$Pt$_x$As$_2$ are consistent with a two-gap isotropic s-wave …
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Spectroscopic studies of high-temperature superconductors on planar tunnel junction devices and nanofabricated point contact junctions
… methods for this investigation are tunneling spectroscopy and point contact spectroscopy. The tunneling spectroscopy directly probes the density of states whereas the point contact spectroscopy detects the sample properties via quasiparticle scattering. Two new approaches to fabricate devices …
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Superconductivity in oxygen doped iron telluride by molecular beam epitaxy
… out to be suffering from nanoshorts and exhibit point contact spectroscopy junction behaviors. We observed evolution of enhanced conduction peaks around 20mV, consistent with published literature. FeTe:Ox/Al/AlOx/Au junctions behave differently, showing a evolving energy gap around 3mV. The fact …
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Manipulating superconductivity in cuprates with selective ultrafast excitation
… (equilibrium) probe of superconductivity, point contact spectroscopy. Point contact spectroscopy (PCS) probes the superconducting order parameter via Andreev reflection and is sensitive to bosonic modes that couple to the quasiparticle spectrum. Recent work has shown that PCS can be used to …
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Non-perturbative approaches to strongly correlated electron systems
… emerges at the orbital-ordering quantum critical point. These modes modify the single-particle density of states and lead to non-Fermi liquid behavior which can provide a possible explanation for the recently observed zero-bias enhancement in the point contact spectroscopy signal on iron …