2007/02/02 by Barbara Dietz, B. Dietz, Thomas Friedrich +8 · 2 citations
Engineering · Physics and Astronomy · #Geophysical Methods and Applications #Magnetic confinement fusion research #Quantum chaos and dynamical systems #cond-mat.other
paper · pdf · doi:10.1103/physrevlett.98.074103
published as Phys. Rev. Lett. 98, 074103 (2007) · 4 pages, 4 figures
arxiv created 2007/02/02 · openalex publication_date 2007/02/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Using reciprocity, we investigate the breaking of time-reversal (T) symmetry due to a ferrite embedded in a flat microwave billiard. Transmission spectra of isolated single resonances are not sensitive to T violation, whereas those of pairs of nearly degenerate resonances do depend on the direction of time. For their theoretical description a scattering matrix model from nuclear physics is used. The T-violating matrix elements of the effective Hamiltonian for the microwave billiard with the embedded ferrite are determined experimentally as functions of the magnetization of the ferrite.