Tootfinder

THz electrodynamics and superconducting energy scales of ZrN thin films
Ozan Saritas, Frederik Bolle, Yayi Lin, Martin Dressel, Roman Potjan, Marcus Wislicenus, Andre Reck, Marc Scheffler
https://arxiv.org/abs/2509.17272

THz electrodynamics and superconducting energy scales of ZrN thin films
The terahertz (THz) properties of ZrN thin films grown with CMOS-techniques on industry-standard 300 mm silicon wafers are investigated in order to explore their superconducting behavior. The films have thicknesses ranging from 18 to 48 nm, and their critical temperatures Tc are between 5 and 7.3 K. We probe the real and imaginary parts of the complex dynamical conductivity sigma in the frequency range from 100 - 540 GHz (0.4 - 2.2 meV) and as a function of temperature. The experiments provide …

Constrained Random Phase Approximation: the spectral method
Merzuk Kaltak, Alexander Hampel, Martin Schlipf, Indukuru Ramesh Reddy, Bongae Kim, Georg Kresse
https://arxiv.org/abs/2508.15368

Constrained Random Phase Approximation: the spectral method
We present a new constrained Random Phase Approximation (cRPA) method, termed spectral cRPA (s-cRPA), and compare it to established cRPA approaches for Scandium and Copper by varying the 3d shell filling. The s-cRPA consistently yields larger Hubbard $U$ interaction values. Applied to the realistic system CaFeO$_3$, s-cRPA produces interaction parameters significantly closer to those required within DFT+$U$ to induce the experimentally observed insulating state, overcoming the metallic behavior…