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

Research output: Contribution to journalArticle

7 Citations (Scopus)

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.

Original languageEnglish
Article number214505
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume78
Issue number21
DOIs
Publication statusPublished - 2008 Dec 1
Externally publishedYes

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

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

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