Vibrational coherent control of localized d-d electronic excitation

Abstract

Addressing the role of quantum coherence in the interplay between the different matter constituents (electrons, phonons and spin) is a critical step towards understanding transition metal oxides and design complex materials with new functionalities. Here we use coherent vibrational control of onsite d-d electronic transitions in a model edge-sharing insulating transition metal oxide (CuGeO3) to single-out the effects of vibrational coherence in electron-phonon coupling. By comparing time domain experiments based on high and low frequency ultrashort pumps with a fully quantum description of phonon assisted absorption, we could distinguish the processes associated to incoherent thermal lattice fluctuations from those driven by the coherent motion of the atoms. In particular, while thermal fluctuation of the phonon bath uniformly increases the electronic absorption, the resonant excitation of phonon modes results also in light-induced transparency which is coherently controlled by the vibrational motion.

arXiv commentArticle: 12 pages, 3 figures Supplementary Information : 28 pages, 13 figures

References in corpus (14)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• The PseudoDojo: Training and grading a 85 element optimized norm-conserving pseudopotential table
• Complexity in Strongly Correlated Electronic Systems
• Nonlinear phononics: A new ultrafast route to lattice control
• Nonlinear lattice dynamics as a basis for enhanced superconductivity in YBa2Cu3O6.5
• Ultrafast optical spectroscopy of strongly correlated materials and high-temperature superconductors: a non-equilibrium approach
• Disentangling the electronic and phononic glue in a high-Tc superconductor
• Femtosecond dynamics of the collinear-to-spiral antiferromagnetic phase transition in CuO
• Parametric amplification of optical phonons
• Orbital excitations in LaMnO${}_3$
• Determining the Short-Range Spin Correlations in Cuprate Chain Materials with Resonant Inelastic X-ray Scattering
• Ab initio calculation of d-d excitations in quasi-one-dimensional Cu d9 correlated materials
• Disentangling thermal and non-thermal excited states in a charge-transfer insulator by time-and-frequency resolved pump-probe spectroscopy
• Optical spectroscopy of pure and doped CuGeO3

Cited by in corpus (9)

• Controlling magnetism with light in a zero orbital angular momentum antiferromagnet
• Ultrafast Mott transition driven by nonlinear electron-phonon interaction
• Probing the interplay between lattice dynamics and short-range magnetic correlations in CuGeO3 with femtosecond RIXS
• Collective nature of orbital excitations in layered cuprates in the absence of apical oxygens
• Local interpretation of time-resolved X-ray absorption in Mott insulators: Insights from nonequilibrium dynamical mean-field theory
• Electronic structure of the frustrated diamond lattice magnet NiRh${}_2$O${}_4$
• Ultrafast pump-probe phase-randomized tomography
• Phonon spectrum in the spin-Peierls phase of CuGeO${}_3$
• Determination and correction of spectral phase from principal component analysis of coherent phonons