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

研究成果: Article査読

9 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号214505
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
78
21
DOI
出版ステータスPublished - 2008 12月 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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