SKM 2021 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 5: Poster Session: Superconductivity
TT 5.13: Poster
Monday, September 27, 2021, 13:30–16:00, P
Higgs mode mediated enhancement of interlayer transport in high-Tc cuprate superconductors — •Guido Homann1, Jayson G. Cosme1,2,3, Junichi Okamoto4,5, and Ludwig Mathey1,2 — 1Zentrum für Optische Quantentechnologien and Institut für Laserphysik, Universität Hamburg, Hamburg, Germany — 2The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany — 3National Institute of Physics, University of the Philippines, Diliman, Philippines — 4Institute of Physics, University of Freiburg, Freiburg, Germany — 5EUCOR Centre for Quantum Science and Quantum Computing, University of Freiburg, Freiburg, Germany
We put forth a mechanism for enhancing the interlayer transport in cuprate superconductors, by optically driving plasmonic excitations along the c axis with a frequency that is blue-detuned from the Higgs frequency [1]. The plasmonic excitations induce a collective oscillation of the Higgs field which induces a parametric enhancement of the superconducting response, as we demonstrate with a minimal analytical model. Furthermore, we perform simulations of a particle-hole symmetric U(1) lattice gauge theory and find good agreement with our analytical prediction. Our numerical results show that the Higgs mode mediated enhancement can be larger than 50%. We investigate how the renormalization of the interlayer coupling depends on the parameters of the optical field and discuss possible challenges brought by damping.
[1] G. Homann, J. G. Cosme, J. Okamoto, L. Mathey, Phys. Rev. B 103, 224503 (2021)