Photo-enhanced antinodal conductivity in the pseudogap state of high- T c cuprates
Federico Cilento,S. Dal Conte,S. Dal Conte,Giacomo Coslovich,Giacomo Coslovich,Simone Peli,Simone Peli,Nicola Nembrini,Nicola Nembrini,S. Mor,Francesco Banfi,Gabriele Ferrini,Hiroshi Eisaki,Mun Chan,Chelsey Dorow,M. J. Veit,Martin Greven,D. van der Marel,Riccardo Comin,Andrea Damascelli,Laurenz Rettig,Uwe Bovensiepen,Massimo Capone,Claudio Giannetti,Fulvio Parmigiani,Fulvio Parmigiani +25 more
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TLDR
Using a broadband probe, ultrashort light pulses are used to track the dynamics of the dielectric function and unveil an anomalous decrease in the scattering rate of the charge carriers in a pseudogap-like region of the temperature (T) and hole-doping phase diagram.Abstract:
A major challenge in understanding the cuprate superconductors is to clarify the nature of the fundamental electronic correlations that lead to the pseudogap phenomenon. Here we use ultrashort light pulses to prepare a non-thermal distribution of excitations and capture novel properties that are hidden at equilibrium. Using a broadband (0.5–2 eV) probe, we are able to track the dynamics of the dielectric function and unveil an anomalous decrease in the scattering rate of the charge carriers in a pseudogap-like region of the temperature (T) and hole-doping (p) phase diagram. In this region, delimited by a well-defined T*neq(p) line, the photoexcitation process triggers the evolution of antinodal excitations from gapped (localized) to delocalized quasiparticles characterized by a longer lifetime. The novel concept of photo-enhanced antinodal conductivity is naturally explained within the singleband Hubbard model, in which the short-range Coulomb repulsion leads to a k-space differentiation between nodal quasiparticles and antinodal excitations.read more
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Ultrafast optical spectroscopy of strongly correlated materials and high-temperature superconductors: a non-equilibrium approach
Claudio Giannetti,Massimo Capone,Daniele Fausti,Michele Fabrizio,Fulvio Parmigiani,Dragan Mihailovic +5 more
TL;DR: In the last two decades non-equilibrium spectroscopies have evolved from avant-garde studies to crucial tools for expanding our understanding of the physics of strongly correlated materials as mentioned in this paper.
Journal ArticleDOI
Ultrafast optical spectroscopy of strongly correlated materials and high-temperature superconductors: a non-equilibrium approach
Claudio Giannetti,Massimo Capone,Daniele Fausti,Michele Fabrizio,Fulvio Parmigiani,Dragan Mihailovic +5 more
TL;DR: In this article, a review of the most recent achievements in the experimental and theoretical studies of the non-equilibrium electronic, optical, structural and magnetic properties of correlated materials is presented.
Journal ArticleDOI
Snapshots of the retarded interaction of charge carriers with ultrafast fluctuations in cuprates
S. Dal Conte,Lev Vidmar,Lev Vidmar,Denis Golež,Marcin Mierzejewski,Giancarlo Soavi,Simone Peli,Simone Peli,Francesco Banfi,Gabriele Ferrini,Riccardo Comin,B. Ludbrook,L. Chauviere,L. Chauviere,Nikolai D. Zhigadlo,Hiroshi Eisaki,Martin Greven,Stefano Lupi,Andrea Damascelli,Daniele Brida,Daniele Brida,Massimo Capone,Janez Bonča,Janez Bonča,Giulio Cerullo,Claudio Giannetti +25 more
TL;DR: By pushing both time and frequency resolution in optical spectroscopy, it is now possible to resolve antiferromagnetic fluctuations in a copper oxide superconductor, which are believed to mediate the pairing of charge carriers.
Journal Article
Nodal/Antinodal Dichotomy and the Two Gaps of a Superconducting Doped Mott Insulator
TL;DR: In this paper, the superconducting state of the hole-doped two-dimensional Hubbard model using cellular dynamical mean-field theory was studied, with the Lanczos method as impurity solver.
Journal ArticleDOI
Evidence for carrier localization in the pseudogap state of cuprate superconductors from coherent quench experiments
TL;DR: Ultrafast spectroscopy is employed to study dynamical properties of the normal to pseudogap state transition in the prototype high-temperature superconductor Bi2Sr2CaCu2O8+δ, revealing marked absence of critical behaviour of the elementary excitations, which implies an absence of collective electronic ordering beyond a few coherence lengths on short timescales.
References
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Journal ArticleDOI
Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3O6.67
Johan Juul Chang,Johan Juul Chang,Elizabeth Blackburn,Alexander T. Holmes,Niels Bech Christensen,Jacob Larsen,Jacob Larsen,Joël Mesot,Joël Mesot,Ruixing Liang,Ruixing Liang,D. A. Bonn,D. A. Bonn,Walter Hardy,Walter Hardy,A. Watenphul,Martin v. Zimmermann,E. M. Forgan,Stephen M Hayden +18 more
TL;DR: X-ray diffraction experiments reveal that spatial charge ordering occurs in the pseudogap state of YBa2Cu3O6.67 as discussed by the authors, which competes with high-temperature superconductivity, and their relative strengths can be tuned using a magnetic field.
Journal ArticleDOI
Pseudogap Precursor of the Superconducting Gap in Under- and Overdoped Bi 2 Sr 2 CaCu 2 O 8 + δ
TL;DR: In this paper, the authors present tunneling spectroscopy of single crystals as a function of oxygen doping and temperature, with a quasiparticle gap that is reduced with increasing oxygen concentration.
Book ChapterDOI
Theory of Magnetic Exchange Interactions:Exchange in Insulators and Semiconductors
TL;DR: In this paper, the subject of exchange in magnetic materials is divided into two parts, referring to insulators and to metals, and a discussion and a diagrammatic classification of all the possible higher-order processes are given.
Journal ArticleDOI
Electrodynamics of high- T c superconductors
Dmitri Basov,Thomas Timusk +1 more
TL;DR: In this article, a review of the electromagnetic response of high-Tc superconductors using terahertz, infrared, and optical spectroscopies is presented, with an emphasis on conceptual issues, including evolution of the electronic spectral weight in doped Mott-Hubbard insulators, the d-wave superconducting energy gap and the normal-state pseudogap, anisotropic superfluid response, electronic phase segregation, emergence of coherent electronic state as a function of both temperature and doping, the vortex state, and the energetics of the super
Journal ArticleDOI
Charge Order Driven by Fermi-Arc Instability in Bi2Sr2−xLaxCuO6+δ
Riccardo Comin,Alex Frano,Alex Frano,Michael M. Yee,Yoshiyuki Yoshida,Hiroshi Eisaki,Enrico Schierle,Eugen Weschke,Ronny Sutarto,Feizhou He,Anjan Soumyanarayanan,Yang He,M. Le Tacon,Ilya Elfimov,Jennifer Hoffman,George A. Sawatzky,Bernhard Keimer,Andrea Damascelli +17 more
TL;DR: Together with earlier observations of electronic order in other cuprate families, these findings suggest the existence of a generic charge-ordered state in underdoped cuprates and uncover its intimate connection to the pseudogap regime.