Universität zu Köln

Cilento, Federico, Manzoni, Giulia, Sterzi, Andrea, Peli, Simone, Ronchi, Andrea ORCID: 0000-0001-8960-4561, Crepaldi, Alberto ORCID: 0000-0001-9971-1731, Boschini, Fabio, Cacho, Cephise ORCID: 0000-0002-0058-5817, Chapman, Richard, Springate, Emma ORCID: 0000-0002-9121-3698, Eisaki, Hiroshi ORCID: 0000-0002-8299-6416, Greven, Martin, Berciu, Mona, Kemper, Alexander F., Damascelli, Andrea, Capone, Massimo ORCID: 0000-0002-9811-5089, Giannetti, Claudio ORCID: 0000-0003-2664-9492 and Parmigiani, Fulvio (2018). Dynamics of correlation-frozen antinodal quasiparticles in superconducting cuprates. Sci. Adv., 4 (2). WASHINGTON: AMER ASSOC ADVANCEMENT SCIENCE. ISSN 2375-2548

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Abstract

Many puzzling properties of high-critical temperature (T-c) superconducting (HTSC) copper oxides have deep roots in the nature of the antinodal quasiparticles, the elementary excitations with wave vector parallel to the Cu-O bonds. These electronic states are most affected by the onset of antiferromagnetic correlations and charge instabilities, and they host the maximum of the anisotropic superconducting gap and pseudogap. We use time-resolved extreme-ultraviolet photoemission with proper photon energy (18 eV) and time resolution (50 fs) to disclose the ultrafast dynamics of the antinodal states in a prototypical HTSC cuprate. After photoinducing a nonthermal charge redistribution within the Cu and O orbitals, we reveal a dramatic momentum-space differentiation of the transient electron dynamics. Whereas the nodal quasiparticle distribution is heated up as in a conventional metal, new quasiparticle states transiently emerge at the antinodes, similarly to what is expected for a photoexcited Mott insulator, where the frozen charges can be released by an impulsive excitation. This transient antinodal metallicity is mapped into the dynamics of the O-2p bands, thus directly demonstrating the intertwining between the low- and high-energy scales that is typical of correlated materials. Our results suggest that the correlation-driven freezing of the electrons moving along the Cu-O bonds, analogous to the Mott localization mechanism, constitutes the starting point for any model of high-T-c superconductivity and other exotic phases of HTSC cuprates.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Cilento, Federico UNSPECIFIED UNSPECIFIED UNSPECIFIED Manzoni, Giulia UNSPECIFIED UNSPECIFIED UNSPECIFIED Sterzi, Andrea UNSPECIFIED UNSPECIFIED UNSPECIFIED Peli, Simone UNSPECIFIED UNSPECIFIED UNSPECIFIED Ronchi, Andrea UNSPECIFIED orcid.org/0000-0001-8960-4561 UNSPECIFIED Crepaldi, Alberto UNSPECIFIED orcid.org/0000-0001-9971-1731 UNSPECIFIED Boschini, Fabio UNSPECIFIED UNSPECIFIED UNSPECIFIED Cacho, Cephise UNSPECIFIED orcid.org/0000-0002-0058-5817 UNSPECIFIED Chapman, Richard UNSPECIFIED UNSPECIFIED UNSPECIFIED Springate, Emma UNSPECIFIED orcid.org/0000-0002-9121-3698 UNSPECIFIED Eisaki, Hiroshi UNSPECIFIED orcid.org/0000-0002-8299-6416 UNSPECIFIED Greven, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Berciu, Mona UNSPECIFIED UNSPECIFIED UNSPECIFIED Kemper, Alexander F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Damascelli, Andrea UNSPECIFIED UNSPECIFIED UNSPECIFIED Capone, Massimo UNSPECIFIED orcid.org/0000-0002-9811-5089 UNSPECIFIED Giannetti, Claudio UNSPECIFIED orcid.org/0000-0003-2664-9492 UNSPECIFIED Parmigiani, Fulvio UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-197300
DOI:	10.1126/sciadv.aar1998
Journal or Publication Title:	Sci. Adv.
Volume:	4
Number:	2
Date:	2018
Publisher:	AMER ASSOC ADVANCEMENT SCIENCE
Place of Publication:	WASHINGTON
ISSN:	2375-2548
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language HIGH-TEMPERATURE SUPERCONDUCTIVITY; ANGLE-RESOLVED PHOTOEMISSION; HIGH-T-C; SYMMETRY-BREAKING; PSEUDOGAP; SPECTROSCOPY; INHOMOGENEITY; HOLE Multiple languages Multidisciplinary Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/19730