Imaging of order parameter induced $π$ phase shifts in cuprate superconductors by low-temperature scanning electron microscopy

Details Imaging of order parameter induced $π$ phase shifts in cuprate superconductors by low-temperature scanning electron microscopy Imaging of order parameter induced $π$ phase shifts in cuprate superconductors by low-temperature scanning electron microscopy

2009-08-04

arxiv.org/abs/0908.0490v1

Phys. Rev. Lett. 103, 067011 (2009)

Physics

Condensed Matter

Superconductivity

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.103.067011

Low-temperature scanning electron microscopy (LTSEM) has been used to image the supercurrent distribution in ramp-type Josephson junctions between Nb and either the electron-doped cuprate Nd$_{2-x}$Ce$_x$CuO$_{4-y}$ or the hole-doped cuprate YBa$_2$Cu$_3$O$_7$. For zigzag-shaped devices in the short junction limit the critical current is strongly suppressed at zero applied magnetic field. The LTSEM images show, that this is due to the Josephson current counterflow in neighboring 0 and $\pi$ facets, which is induced by the $d_{x^2-y^2}$ order parameter in the cuprates. Thus, LTSEM provides imaging of the sign change of the superconducting order parameter, which can also be applied to other types of Josephson junctions.

Affiliated with

Also associated with

No associations

Rating

Imaging of order parameter induced $π$ phase shifts in cuprate superconductors by low-temperature scanning electron microscopy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Imaging of order parameter induced $π$ phase shifts in cuprate superconductors by low-temperature scanning electron microscopy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Imaging of order parameter induced $π$ phase shifts in cuprate superconductors by low-temperature scanning electron microscopy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-557537