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Workshop on Ultrafast Dynamics in Strongly Correlated Systems

4–6 Apr 2011
ETH Zurich, Campus Science City, HIT Building
Europe/Zurich timezone

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Session

Charge density waves II

T8
5 Apr 2011, 15:20
ETH Zurich, Campus Science City, HIT Building

ETH Zurich, Campus Science City, HIT Building

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Chair: M. Wolf

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  1. 43. Structural response to non-thermal melting of a charge density wave.
    Ekaterina Vorobeva (Paul Scherrer Institute)
    05/04/2011, 15:20
    Talk
    Recent developments in time resolved techniques such as angle resolved photo emission Spectroscopy and x-ray diffraction have opened new opportunities to probe directly dynamics of the electronic and structural order on femtosecond time-scales. Charge Density Waves (CDW) comprise a class of collective phenomena arising from a correlation between the electron density and the underlying...
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  2. 32. Ultrafast Dynamics of CDW state in TbTe3 via time-resolved resonant diffraction
    Rob Moore (SLAC National Accelerator Lab.)
    05/04/2011, 15:40
    Talk
    TbTe3 is a model system that exhibits a two dimensional incommensurate charge density wave state due to the Fermi surface nesting. Ultrafast pump-probe dynamics of the CDW state in such system has attracted significant interest in the field. Although coherent phonon mode and the amplitude mode, a collective excitation of the CDW sate, has been observed by time-resolved pump-probed reflectivity...
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  3. 34. Dynamics of the electronic and lattice parts of the order parameter in density wave systems
    Jure Demsar (Universität Konstanz, FB Physik, D-78457 Konstanz)
    05/04/2011, 16:00
    Talk
    Numerous advanced materials, like e.g. high-temperature-superconductors or colossal magneto-resistance compounds, owe their unique macroscopic properties to the existence of a delicate balance among different interactions on nanoscale. Thus, the study of interplay between various degrees of freedom in such system is crucial for their understanding. Charge-Density-Wave (CDW) systems , with...
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  4. 45. Momentum-dependent snapshots of a melting charge density wave
    Jesse Petersen (Oxford University)
    05/04/2011, 16:20
    Invited talk
    Charge density waves (CDWs) underpin the electronic properties of many complex materials. When electrons are uncorrelated, CDW order is driven by the electron-phonon interaction alone, producing linearly coupled lattice and charge-density modulations whose dynamics are understood in terms of collective amplitude and phase modes. However, if electronic correlations dominate, lattice and charge...
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