15 papers
Niobium Titanium Nitride as a High Tensile Stress Material for Nanomechanics
Korbinian Rubenbauer, Burak E. Bülbüloglu, Thomas Luschmann +6
Over the past decades, high-coherence mechanical resonators have been continuously pushed to new limits, using techniques such as dissipation dilution and clamp-tapering to enhance…
Multi-cavity strong coupling to an electron spin ensemble: spectral and dark-state signatures
P. Oehrl, B. Pérez González, A. Dunaev +5
Spin ensembles are considered as potential candidates for quantum memory and quantum enhanced sensing applications. Here, we explore the controlled coupling of multiple superconduc…
Second-Harmonic Imaging of Magnetic Domains in Thin Film Hematite
Holger Mirkes, Johannes Schmuck, Katharina Müller +7
Hematite is an antiferromagnetic oxide and candidate altermagnetic insulator whose Néel order reorients from an easy-axis to an easy-plane phase at the Morin transition. Interpret…
GHz non-reciprocal optical conductivity in hematite (-)
Peng Rao, Johannes Gröbmeyer, P. Peter Stavropoulos +5
We study the non-reciprocal properties of the iron oxide -FeO (hematite) in the canted easy-plane antiferromagnetic phase, specifically in the GHz to THz frequency rang…
Temperature dependence of the magnon-phonon coupling in yttrium iron garnet/gadolinium gallium garnet high overtone bulk acoustic resonators
Johannes Weber, Manuel Müller, Mikhail Cherkasskii +7
Weexperimentally study the temperature dependence of the magnon-phonon coupling in a yttrium iron garnet (YIG)/gadolinium gallium garnet (GGG) heterostructure. More specifically, w…
On-chip Dicke-type magnon polaritons in the ultrastrong coupling regime via spatially separated nanomagnets
Shugo Yoshii, Manuel Müller, Ryo Ohshima +4
Quantum electrodynamics lies at the heart of hybrid quantum systems essential for future technologies. The thermodynamic limit of the Dicke model, a fundamental model describing th…