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Jenny Witt
Jenny Witt
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Phone: +49 (0)40 8998-6593
Room: 99/O1.081
Dr. Joerg M. Harms
Joerg M. Harms
Scientific graphics, Web, Photo, PR

Phone: +49 (0)40 8998-5358
Room: 99/O2.075

 

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Original 1565689297

Study on attosecond timescale casts new light on electron dynamics in transition metals

August 05, 2019
An international team of scientists involving the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) in Hamburg has unraveled the light-induced electron-localization dynamics in transition metals at the attosecond timescale. The team investigated for the first time the many-body electron dynamics in transition metals before thermalization sets in. Their work has now appeared in Nature Physics. [more]
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New research highlights similarities in the insulating states of twisted bilayer graphene and cuprates

July 31, 2019
In recent decades, enormous research efforts have been expended on the exploration and explanation of high-temperature (high-Tc) superconductors, a class of materials exhibiting zero resistance at particularly high temperatures. Now a team of scientists from the United States, Germany and Japan explains in Nature how the electronic structure in twisted bilayer graphene influences the emergence of the insulating state in these systems, which is the precursor to superconductivity in high-Tc materials. [more]
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Quantum uncertainty helps solve an old problem

July 24, 2019
Controlling how electrons zip through a material is of central importance to build novel electronic devices. How the electronic motion is affected by magnetic fields is an old problem that has not been fully solved, yet has already led to multiple physics Nobel prizes. Now researchers at the Max Planck Institute for the Structure and Dynamics of Matter in Hamburg have solved one of the long-standing problems in the field, namely how a certain symmetry can be restored. Their results were just published in Physical Review Letters. [more]
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Discovery of light-induced ferroelectricity in strontium titanate

June 14, 2019
Light can be used not only to measure materials’ properties, but also to change them. Especially interesting are those cases in which the function of a material can be modified, such as its ability to conduct electricity or to store information in its magnetic state. A team led by Andrea Cavalleri from the Max Planck Institute for the Structure and Dynamics of Matter in Hamburg used terahertz frequency light pulses to transform a non-ferroelectric material into a ferroelectric one. [more]
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Laser-controlled novel superconductors could pave the way to future quantum computers

May 29, 2019
Controlling the quantum properties of materials is a central challenge in physics as well as an essential step towards using quantum physics for applications or building scalable quantum computers. [more]
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The taming of the light screw

March 21, 2019
Scientists from DESY, the MPSD, the University of Hamburg and the CUI Cluster of Excellence create high-order harmonics from solids with controlled polarization states, taking advantage of both crystal symmetry and attosecond electronic dynamics. The newly demonstrated technique might find intriguing applications in petahertz electronics and for spectroscopic studies of novel quantum materials. [more]
Original 1549965144

Unraveling materials' Berry curvature and Chern numbers from real-time evolution of Bloch states

February 12, 2019
Researchers from the Theory Department of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science (CFEL) in Hamburg and UNIST (Ulsan National Institute of Science and Technology) in Korea used a state-of-the-art quantum dynamical method to calculate the quantum of spin or charge Hall conductivity, by which they successfully classified the intrinsic topological natures of materials. Their work has been published in PNAS. [more]
 
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