Slope of the superconducting gap function inBi2Sr2CaCu2O8+δmeasured by vacuum tunneling spectroscopy
نویسندگان
چکیده
منابع مشابه
Tunneling through a controllable vacuum gap
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A theory for tunneling between a real surface and a model probe tip, applicable to the "scanning tunneling microscope" is presented. The tunneling current is found to be proportional to the local density of states of the surface, at the position of the tip. It can be shown that the tunneling conductance has exponential dependence on the distance of the nearest approach to the surface
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We report on the study of atomically sharp superconducting tips for scanning tunneling microscopy and spectroscopy. The results clearly show vacuum tunneling of superconducting quasiparticles from atomically sharp tips. Observed deviations of the energy gap of the superconducting tip from its bulk value are attributed to the proximity effect. We show that a combination of a superconducting tip ...
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چکیده ندارد.
15 صفحه اولSuperconducting Gap within a Modified Interlayer Tunneling Model
A modified version of the interlayer tunneling model, including interlayer single particle hopping (ISPH), is considered as a phenomenological model to describe cuprate superconductors. The effective ISPH (teff ⊥ ) is taken along with a probability factor P , that involves the normal state pseudogap (Eg). This makes t eff ⊥ to mimic experimental observations that, ISPH is small in the underdope...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1999
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.59.11962