Magnetic Moment Peculiarities in Bismuth Bicrystals with Large Crystallite Disorientation Angles

Details Magnetic Moment Peculiarities in Bismuth Bicrystals with Large Crystallite Disorientation Angles Magnetic Moment Peculiarities in Bismuth Bicrystals with Large Crystallite Disorientation Angles

2005-06-04

arxiv.org/abs/cond-mat/0506107v1

Physics

Condensed Matter

Superconductivity

10 pages, 3 figures

Scientific paper

Magnetization measurements prove that the magnetic properties of large-angle (theta > 30o) bismuth bicrystals with crystallite interface (CI) of twisting type essentially differ from well-known results on single-crystalline specimens. Two superconducting phases were observed at CI of bicrystals (ordinary rhombohedral Bi is not a superconductor). It was shown that one of them (phase with Tc ~ 8,4 K) is localized in central part of crystallite interface. It was also found that in adjacent layers (width of layer d2 ~ 20 nm) of CI the proximity effect is significant.

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