TY - JOUR
T1 - Absence of Andreev reflections and Andreev bound states above the critical temperature
AU - Dagan, Y.
AU - Kohen, A.
AU - Deutscher, G.
AU - Revcolevschi, A.
PY - 2000
Y1 - 2000
N2 - We present measurements of the temperature dependence of the differential conductance of normal-metal/underdoped high-(Formula presented) superconductors contacts. Both (Formula presented) thin films and (Formula presented) single crystals were studied. The effect of direct Andreev reflections, or of Andreev bound states, do not persist above the critical temperature. Our results are consistent with an Andreev energy scale that does not follow the doping dependence of the pseudogap, but rather that of the critical temperature.
AB - We present measurements of the temperature dependence of the differential conductance of normal-metal/underdoped high-(Formula presented) superconductors contacts. Both (Formula presented) thin films and (Formula presented) single crystals were studied. The effect of direct Andreev reflections, or of Andreev bound states, do not persist above the critical temperature. Our results are consistent with an Andreev energy scale that does not follow the doping dependence of the pseudogap, but rather that of the critical temperature.
UR - http://www.scopus.com/inward/record.url?scp=16644398816&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.61.7012
DO - 10.1103/PhysRevB.61.7012
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AN - SCOPUS:16644398816
SN - 1098-0121
VL - 61
SP - 7012
EP - 7016
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 10
ER -