Origin of dips in tunneling dI/dV characteristics of cuprates

Details Origin of dips in tunneling dI/dV characteristics of cuprates Origin of dips in tunneling dI/dV characteristics of cuprates

2007-02-28

arxiv.org/abs/cond-mat/0702687v1

Physica C 460-462, 956 (2007)

Physics

Condensed Matter

Superconductivity

2 pages including 3 figures. To appear in Physica C (proceedings of the M2S-VIII Dresden Conference)

Scientific paper

10.1016/j.physc.2007.03.325

Extensive efforts have been made to understand the electronic properties of high-Tc superconductors. One feature which has been discussed in the literature during the past few years is the dips in tunneling conductances obtained in cuprates. In this contribution, we focus our attention on the origin of these dips. On the basis of experimental data obtained in Bi2Sr2CaCu2O8 and YBa2Cu3O7, we show that the dips appear naturally in tunneling spectra due to a superposition of the peaks and humps and, therefore, have no physical meaning.

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