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

Access to Document

10.1103/PhysRevB.78.214505

Cite this

@article{2946aa9a65764cf688dd6c88319c197a,

title = "Excitation of a bosonic mode by electron tunneling into a cuprate superconductor NdBa2Cu3O7-δ",

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.",

author = "P. Das and Koblischka, {M. R.} and H. Rosner and Th Wolf and U. Hartmann",

year = "2008",

month = dec,

day = "1",

doi = "10.1103/PhysRevB.78.214505",

language = "English",

volume = "78",

journal = "Physical Review B-Condensed Matter",

issn = "0163-1829",

publisher = "American Institute of Physics Publising LLC",

number = "21",

}

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.

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.

UR - http://www.scopus.com/inward/record.url?scp=57649171662&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=57649171662&partnerID=8YFLogxK

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 -

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

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this