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

P. Das; Michael Rudolf 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, Michael Rudolf Koblischka, H. Rosner, Th Wolf, U. Hartmann

Research output: Contribution to journal › Article

7 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

Fingerprint

Electronic density of states

Electron tunneling

electron tunneling

Band structure

cuprates

Derivatives

Scanning

excitation

Experiments

curves

energy

scanning

electronics

Cuprate superconductors

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

Das, P., Koblischka, M. R., Rosner, H., Wolf, T., & Hartmann, U. (2008). Excitation of a bosonic mode by electron tunneling into a cuprate superconductor NdBa₂Cu₃O_7-δ. Physical Review B - Condensed Matter and Materials Physics, 78(21), [214505]. https://doi.org/10.1103/PhysRevB.78.214505

Excitation of a bosonic mode by electron tunneling into a cuprate superconductor NdBa₂Cu₃O_7-δ. / Das, P.; Koblischka, Michael Rudolf; Rosner, H.; Wolf, Th; Hartmann, U.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 78, No. 21, 214505, 01.12.2008.

Research output: Contribution to journal › Article

Das, P, Koblischka, MR, Rosner, H, Wolf, T & Hartmann, U 2008, 'Excitation of a bosonic mode by electron tunneling into a cuprate superconductor NdBa₂Cu₃O_7-δ', Physical Review B - Condensed Matter and Materials Physics, vol. 78, no. 21, 214505. https://doi.org/10.1103/PhysRevB.78.214505

Das P, Koblischka MR, Rosner H, Wolf T, Hartmann U. Excitation of a bosonic mode by electron tunneling into a cuprate superconductor NdBa₂Cu₃O_7-δ. Physical Review B - Condensed Matter and Materials Physics. 2008 Dec 1;78(21). 214505. https://doi.org/10.1103/PhysRevB.78.214505

Das, P. ; Koblischka, Michael Rudolf ; Rosner, H. ; Wolf, Th ; Hartmann, U. / Excitation of a bosonic mode by electron tunneling into a cuprate superconductor NdBa₂Cu₃O_7-δ. In: Physical Review B - Condensed Matter and Materials Physics. 2008 ; Vol. 78, No. 21.

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Access to Document

10.1103/PhysRevB.78.214505