Riku’s paper on ultrafast signatures of Majorana zero modes is online. Congrats! This was a very nice collaboration with our friends Enrico Perfetto and Gianluca Stefanucci in Rome as well as Robert van Leeuwen in Jyväskylä.
Gabriel’s paper is out in Nature Communications: G. E. Topp et al., Nature Communications 9, 4452 (2018). Here is a link to the press release “Shedding light on Weyl fermions” on the MPSD website (click here for a German version).
Riku’s new paper on the adiabatic preparation of a correlated symmetry-broken initial state with the generalized Kadanoff-Baym ansatz is on arXiv.
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.
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 mechanism is known in the engineering literature as AC-DC conversion or rectification. Here we investigated this mechanism in a quantum transport setup consisting of graphene nanoribbons, and derived some general “rules of thumb” for quantum pumping.
Our paper on nonequilibrium enhancement of electron-phonon coupling in driven nonlinearly coupled systems has been published in Physical Review B.
Our work “Theory of Laser-Controlled Competing Superconducting and Charge Orders” has been published in Physical Review Letters.
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 – electrons coupled to a “cloud” of lattice distortion – or even make the system superconducting. It has recently been debated how possible light-induced superconductivity in carbon football molecular crystal (“fullerenes”) may come about, and nonlinear electron-phonon coupling might play an important role. Similarly, more direct signatures of light-enhanced electron-lattice coupling have been observed in metallic bilayers of the carbon flatland material graphene. Now experiments have to be performed to check the hypothesis of our theory paper.
Our work “Energy Dissipation from a Correlated System Driven Out of Equilibrium” was published in Nature Communications (doi:10.1038/ncomms13761).