TY - JOUR
T1 - Temperature dependence of tunneling conductance on an overdoped Pr 0.82LaCe0.18CuO4 with Tc∼16K
AU - Minematsu, M.
AU - Fujita, M.
AU - Yamada, K.
AU - Miyakawa, N.
N1 - Funding Information:
The authors would like to thank K. Ogata and S. Kawashima for their assistance with the experiments. This work was supported by Grants-in-Aid for Scientific Research (C) (N.M.), for Young Scientists A (M.F.), and for Creative Scientific Research (K.Y.), from the Ministry of Education, Culture, Sports, Science and Technology, Japan.
PY - 2010/12
Y1 - 2010/12
N2 - We present tunneling conductances on electron-doped Pr 0.82LaCe0.18CuO4 (PLCCO) single crystals with Tc∼16K that are in overdoped regime. Our data exhibit reproducible superconducting-gap peaks at 4.44±0.71mV and the subgap-shape is cusplike which can be fitted well by using d-wave or nonmonotonic d-wave symmetry, showing that PLCCO is a superconductor with nodal gap. Furthermore, we found that the temperature dependence of the gap magnitude is BCS like and it disappeared at Tc. We conclude that these characteristic features (such as d-wave order parameter and no pseudogap above Tc) of electron-doped cuprates in the overdoped regime are fundamentally similar to those of hole-doped cuprates in the overdoped regime.
AB - We present tunneling conductances on electron-doped Pr 0.82LaCe0.18CuO4 (PLCCO) single crystals with Tc∼16K that are in overdoped regime. Our data exhibit reproducible superconducting-gap peaks at 4.44±0.71mV and the subgap-shape is cusplike which can be fitted well by using d-wave or nonmonotonic d-wave symmetry, showing that PLCCO is a superconductor with nodal gap. Furthermore, we found that the temperature dependence of the gap magnitude is BCS like and it disappeared at Tc. We conclude that these characteristic features (such as d-wave order parameter and no pseudogap above Tc) of electron-doped cuprates in the overdoped regime are fundamentally similar to those of hole-doped cuprates in the overdoped regime.
KW - Electron-doped cuprates
KW - PrLaCeCuO
KW - Tunneling spectroscopy
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U2 - 10.1016/j.physc.2009.12.011
DO - 10.1016/j.physc.2009.12.011
M3 - Article
AN - SCOPUS:78649697039
VL - 470
SP - S29-S30
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - SUPPL.1
ER -