TY - JOUR
T1 - Excitation of a bosonic mode by electron tunneling into a cuprate superconductor NdBa2Cu3O7-δ
AU - Das, P.
AU - Koblischka, M. R.
AU - Rosner, H.
AU - Wolf, Th
AU - Hartmann, U.
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2008/12/1
Y1 - 2008/12/1
N2 - We performed scanning tunneling spectroscopic experiments on hole-doped NdBa2Cu3O7-δ. The dI/dV curves obtained at 4.2 K are asymmetric with clear peak, dip, and hump structures. Energy derivatives of these curves show peaks at energies beyond the dip features. Highly precise full potential band-structure calculations confirm a featureless electronic density of states in that energy region. Our results indicate that tunneling electrons couple to a collective mode in the CuO2 plane.
AB - We performed scanning tunneling spectroscopic experiments on hole-doped NdBa2Cu3O7-δ. The dI/dV curves obtained at 4.2 K are asymmetric with clear peak, dip, and hump structures. Energy derivatives of these curves show peaks at energies beyond the dip features. Highly precise full potential band-structure calculations confirm a featureless electronic density of states in that energy region. Our results indicate that tunneling electrons couple to a collective mode in the CuO2 plane.
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U2 - 10.1103/PhysRevB.78.214505
DO - 10.1103/PhysRevB.78.214505
M3 - Article
AN - SCOPUS:57649171662
VL - 78
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 21
M1 - 214505
ER -