Excitation of a bosonic mode by electron tunneling into a cuprate superconductor NdBa2Cu3O7-δ

P. Das; M. R. Koblischka; H. Rosner; Th Wolf; U. Hartmann

doi:10.1103/PhysRevB.78.214505

Excitation of a bosonic mode by electron tunneling into a cuprate superconductor NdBa₂Cu₃O_7-δ

P. Das, M. R. Koblischka, H. Rosner, Th Wolf, U. Hartmann

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

We performed scanning tunneling spectroscopic experiments on hole-doped NdBa₂Cu₃O_7-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.

Original language	English
Article number	214505
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	78
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevB.78.214505
Publication status	Published - 2008 Dec 1
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.78.214505

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abstract = "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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AU - Rosner, H.

AU - Wolf, Th

AU - Hartmann, U.

PY - 2008/12/1

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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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Excitation of a bosonic mode by electron tunneling into a cuprate superconductor NdBa₂Cu₃O_7-δ

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