English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In a recent article, Alldredge et al. reported tunnelling data obtained at T= 4.2 K by STM in Bi-2212 having different doping levels, p, and a new way tofit the measured differential conductances, g(V), which are linearlyproportional to the local density of states of quasiparticle excitations at thesurface, N(E). The main point of the fitting procedure is to use anenergy-dependent inelastic scattering rate, G = aE (a is a constant). Theyargue that by using an equation of the d-wave BCS density of states(Bardeen-Cooper-Schrieffer) modified by Dynes et al. with G = aE, they wereable to fit any conductance obtained in Bi-2212 with a doping level between 0.1and 0.22. In addition, they discuss a new energy scale Delta_0(p) similar tothat obtained in Raman measurements. Unfortunately, the paper is misleading.

Comment on Evolution of the electronic excitation spectrum with strongly  diminishing hole density in superconducting Bi-2212 (J. W. Alldredge et al.,  Nature Phys. 4, 319 (2008))