Contributions to the Yearbook of the Max Planck Society

Contributions to the Yearbook of the Max Planck Society

2019

  • The Design Principles of Nature Revealed at the Atomic and Electronic Timescales

    2019

    Eike C. Schulz, Robert Bücker, Günther H. Kassier, Hong Guan Duan,  R.J. Dwayne Miller

    Just how has nature optimized certain biological structures to optimally transduce chemistry into living systems? In the area of barrier-crossing, which takes around 100 femtoseconds, there is a proposal that nature has optimized form and function to exploit quantum effects by environmental engineering to extend coherences - even electronic coherences - on the timescale relevant to electronic motions sensitive to the environment fluctuations. In enzymatic processes lasting microseconds and above, stochastic thermally driven motions need to steer the chemistry to drive biological functions.

2017

  • Light-induced superconductivity: footballs carry an electrical current without resistance

    2017 Först, Michael; Nicoletti, Daniele; Cavalleri, Andrea
    Superconductors at very low temperatures show the remarkable property of being able to conduct electrical current without any resistance. However, the use of these materials in everyday life applications is severely limited by the need for cooling to at least minus 70 degrees Celsius. In carbon-based molecules, irradiation with intense mid-infrared laser light has now enabled to induce a short-lived transient superconducting state at higher temperatures. The knowledge gained might help in the development of materials that become superconducting at significantly higher temperatures.

2016

  • How light changes matter: from a laser to a few photons

    2016 Ruggenthaler, Michael; Hübener, Hannes; Sentef, Michael A.; Appel, Heiko; Rubio, Angel
    The properties of matter, e.g., the conductivity, can be tailored with light. This can be done with a lot of photons that are part of a laser beam, or in certain cases only a few photons are enough. In the theory department of the Max Planck Institute for the Structure and Dynamics of Matter in Hamburg, researchers use both extreme cases to investigate novel states of matter: a laser allows theoretically generating hitherto unobserved states of matter and via a few photons chemical reactions can be altered.

2015

  • Molecular movie from Hamburg

    2015 Hayes, Stuart; Manz, Stephanie; Bücker, Robert; Kassier, Günther; Miller, R.J. Dwayne.
    Many processes in the chemistry of life take place on ultrashort length and time scales. Their observation thus lies beyond the capabilities of optical microscopes. The investigation of such processes using novel electron sources in many cases presents a cost-saving alternative to X-ray studies using synchrotron radiation sources and free-electron lasers. Also the development of methods for the preparation of liquid samples is essential for the study of many organic materials.

2014

  • Superconductivity at room temperature: A dream becomes reality for a split second

    2014 Först, M.; Mankowsky, R.; Kaiser, S.; Hu, W.; Cavalleri, A.

    Superconductors carry an electric current without resistance only at low temperatures. Now, for the first time, scientists have turned a ceramic crystal into a superconductor even at room temperature, using an ultrashort mid-infrared flash of light. The superconducting state survived only for a couple of picoseconds (millionth of a microsecond), and the researchers found that this light-induced state is based on certain distortions of the material’s crystal lattice. These findings may aid the quest for higher temperature superconductors and pave the way for novel applications.

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