Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
Zur Ablage hinzufügen
  Lokale TagsFreigabegeschichteDetailsÜbersicht

Freigegeben
Zeitschriftenartikel

Nonlinear lattice dynamics as a basis for enhanced superconductivity in YBa2Cu3O6.5

MPG-Autoren
/persons/resource/persons133845

Mankowsky,  Roman
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
University of Hamburg;
Center for Free-Electron Laser Science (CFEL);

/persons/resource/persons140949

Subedi,  Alaska
Center for Free-Electron Laser Science (CFEL);
Theory of Complex Materials, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Centre de Physique Théorique, École Polytechnique, CNRS;

/persons/resource/persons133775

Först,  Michael
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science (CFEL);

/persons/resource/persons133811

Cavalleri,  Andrea
Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
University of Hamburg;
Center for Free-Electron Laser Science (CFEL);
Department of Physics, University of Oxford, Clarendon Laboratory;

Externe Ressourcen

https://dx.doi.org/10.1038/nature13875
(Verlagsversion)

http://arxiv.org/abs/1405.2266
(Preprint)

Volltexte (beschränkter Zugriff)
Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.
Volltexte (frei zugänglich)

1405.2266.pdf
(Preprint), 6MB

Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Mankowsky, R., Subedi, A., Först, M., Mariager, S. O., Chollet, M., Lemke, H. T., et al. (2014). Nonlinear lattice dynamics as a basis for enhanced superconductivity in YBa2Cu3O6.5. Nature, 516(7529), 71-73. doi:10.1038/nature13875.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0024-BE57-7
Zusammenfassung
Terahertz-frequency optical pulses can resonantly drive selected vibrational modes in solids and deform their crystal structures. In complex oxides, this method has been used to melt electronic order, drive insulator-to-metal transitions and induce superconductivity. Strikingly, coherent interlayer transport strongly reminiscent of superconductivity can be transiently induced up to room temperature (300 kelvin) in YBa2Cu3O6+x. Here we report the crystal structure of this exotic non-equilibrium state, determined by femtosecond X-ray diffraction and ab initio density functional theory calculations. We find that nonlinear lattice excitation in normal-state YBa2Cu3O6+x at above the transition temperature of 52 kelvin causes a simultaneous increase and decrease in the Cu–O2 intra-bilayer and, respectively, inter-bilayer distances, accompanied by anisotropic changes in the in-plane O–Cu–O bond buckling. Density functional theory calculations indicate that these motions cause drastic changes in the electronic structure. Among these, the enhancement in the dx2-y2 character of the in-plane electronic structure is likely to favour superconductivity.