TY - JOUR
T1 - Graphite-superconductor junctions as a probe of order-parameter symmetry
AU - Parker, David
AU - Thalmeier, Peter
PY - 2007/8/22
Y1 - 2007/8/22
N2 - We discuss a method for determining the order-parameter symmetry of quasi-one- and quasi-two-dimensional unconventional superconductors by the use of graphite-superconductor junctions. The use of a graphite gate voltage, in combination with a bias tunneling voltage, allows access to more information concerning gap values on the Fermi surface than with conventional tunneling spectroscopy, where only a bias voltage is employed. In particular, the use of a gate voltage allows one to tune the momentum-space size of the tunneling region, thus accessing gap values over local regions of the superconductor Fermi surface, in contrast to conventional tunneling techniques.
AB - We discuss a method for determining the order-parameter symmetry of quasi-one- and quasi-two-dimensional unconventional superconductors by the use of graphite-superconductor junctions. The use of a graphite gate voltage, in combination with a bias tunneling voltage, allows access to more information concerning gap values on the Fermi surface than with conventional tunneling spectroscopy, where only a bias voltage is employed. In particular, the use of a gate voltage allows one to tune the momentum-space size of the tunneling region, thus accessing gap values over local regions of the superconductor Fermi surface, in contrast to conventional tunneling techniques.
UR - http://www.scopus.com/inward/record.url?scp=34548282051&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.76.064525
DO - 10.1103/PhysRevB.76.064525
M3 - Article
AN - SCOPUS:34548282051
SN - 1098-0121
VL - 76
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 6
M1 - 064525
ER -