STM Gets to the Core of the Matter in a High‐
NOV 01, 1995
Researchers at the University of Geneva have succeeded in applying scanning tunneling microscopy to one type of high‐Tc superconductor, opening the door to further study of the v0ortex cores.
DOI: 10.1063/1.2808245
Since the 1986 discovery of high‐temperature superconductors, researchers have been struggling to understand the nature of the magnetic flux lines that thread through these copper‐oxide materials when the field is above a few tens of gauss. the flux lines take the form of vortices, swirling supercurrents that confine the magnetic field to a cylindrical region around a quiescent center. Understanding them is more than an academic exercise: Motion of the vortices, when pushed by a high enough current, introduces resistivity and limits the long‐sought high‐field applications. (See
© 1995. American Institute of Physics
