Our paper on cavity QED superconductivity is online: arXiv:1802.09437. We propose to use the coupling of matter to quantized photon modes inside a cavity to enhance electron-phonon coupling and influence superconductivity.
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Charge pumping in graphene
Riku’s paper with Mike Ridley on charge pumping in ac-driven graphene nanoribbons has been published in Physical Review B. Congrats! Popular summary: Typically, electronic current flowing through a conductor needs a net voltage to be applied across the conductor. However, applying an alternating voltage, which is zero on average, may induce a direct current. This… Continue reading Charge pumping in graphene
Paper published in Physical Review B
Our paper on nonequilibrium enhancement of electron-phonon coupling in driven nonlinearly coupled systems has been published in Physical Review B.
Paper published in Physical Review Letters
Our work “Theory of Laser-Controlled Competing Superconducting and Charge Orders” has been published in Physical Review Letters.
How to make a material more correlated with light
Our preprint “Light-enhanced electron-phonon coupling from nonlinear electron-phonon coupling” is available on arXiv. In this work, it is shown how one can amplify electron-lattice coupling by using lasers that are tuned to a phonon, that is coupled quadratically to the electrons of the material. Such enhanced electron-lattice coupling can lead to the formation of polarons… Continue reading How to make a material more correlated with light
Elementary-particle physics in laser-driven materials
Our work “Creating stable Floquet-Weyl semimetals by laser-driving of 3D Dirac materials” was published in Nature Communications (doi:10.1038/ncomms13940). Further reading: Studying fundamental particles in materials
Understanding the energy flow in a high-temperature superconductor
Our work “Energy Dissipation from a Correlated System Driven Out of Equilibrium” was published in Nature Communications (doi:10.1038/ncomms13761). Further reading: Laser pulses help scientists tease apart complex electron interactions Energiefluss im Supraleiter Laserpulse helfen Forschern, komplexe Elektronenwechselwirkungen zu entflechten
Control of competing orders
In a new theory published on arXiv today we show how a laser beam can exert control in a system with competing superconducting and charge orders. The underlying mechanism with a striking resonance for photon frequencies near the gap edge may even be used to understand light-induced superconductivity. The above figure illustrates how a symmetry… Continue reading Control of competing orders
Research group starting soon
This is the new webspace for the Sentef Lab, a DFG funded Emmy Noether Research Group starting in September 2016. More information can be found in the official press release of the MPSD.