TY - JOUR
T1 - Evolution of a bosonic mode across the superconducting dome in the high-Tc cuprate Pr2-xCexCuO4-δ
AU - Diamant, I.
AU - Hacohen-Gourgy, S.
AU - Dagan, Y.
PY - 2011/9/12
Y1 - 2011/9/12
N2 - We report a detailed spectroscopic study of the electron-doped cuprate superconductor Pr2-xCexCuO4-δ using point contact junctions for x=0.125 (underdoped), x=0.15 (optimally doped), and x=0.17 (overdoped). From our conductance measurements, we are able to identify bosonic resonances for each doping. These excitations disappear above the critical magnetic field. We find that the energy of the bosonic excitations decreases with doping, which excludes lattice vibrations as the paring glue. We conclude that the bosonic mediator for these cuprates is more likely to be spin excitations.
AB - We report a detailed spectroscopic study of the electron-doped cuprate superconductor Pr2-xCexCuO4-δ using point contact junctions for x=0.125 (underdoped), x=0.15 (optimally doped), and x=0.17 (overdoped). From our conductance measurements, we are able to identify bosonic resonances for each doping. These excitations disappear above the critical magnetic field. We find that the energy of the bosonic excitations decreases with doping, which excludes lattice vibrations as the paring glue. We conclude that the bosonic mediator for these cuprates is more likely to be spin excitations.
UR - http://www.scopus.com/inward/record.url?scp=80053594884&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.84.104511
DO - 10.1103/PhysRevB.84.104511
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:80053594884
SN - 1098-0121
VL - 84
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 10
M1 - 104511
ER -