Academic Journal

Large momentum-dependence of the main dispersion ‘kink’ in the high-Tc superconductor Bi2Sr2CaCu2O8+δ

Bibliographic Details
Title:	Large momentum-dependence of the main dispersion ‘kink’ in the high-Tc superconductor Bi2Sr2CaCu2O8+δ
Authors:	N C Plumb, T J Reber, H Iwasawa, Y Cao, M Arita, K Shimada, H Namatame, M Taniguchi, Y Yoshida, H Eisaki, Y Aiura, D S Dessau
Source:	New Journal of Physics, Vol 15, Iss 11, p 113004 (2013)
Publisher Information:	IOP Publishing, 2013.
Publication Year:	2013
Collection:	LCC:Science LCC:Physics
Subject Terms:	Science, Physics, QC1-999
More Details:	Ultrahigh resolution angle-resolved photoemission spectroscopy with low-energy photons is used to study the detailed momentum dependence of the well-known nodal ‘kink’ dispersion anomaly of Bi _2 Sr _2 CaCu _2 O _8+ _δ . We find that the kink's location transitions smoothly from a maximum binding energy of about 65 meV at the node of the d -wave superconducting gap to 55 meV roughly one-third of the way to the antinode. Meanwhile, the self-energy spectrum corresponding to the kink dramatically sharpens and intensifies beyond a critical point in momentum space. We discuss the possible bosonic spectrum in energy and momentum space that can couple to the k -space dispersion of the electronic kinks.
Document Type:	article
File Description:	electronic resource
Language:	English
ISSN:	1367-2630
Relation:	https://doaj.org/toc/1367-2630
DOI:	10.1088/1367-2630/15/11/113004
Access URL:	https://doaj.org/article/8390a7669a954ff0ae91fde2c94a429d
Accession Number:	edsdoj.8390a7669a954ff0ae91fde2c94a429d
Database:	Directory of Open Access Journals