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Induced Time-Reversal Symmetry Breaking Observed in Microwave Billiards

B. Dietz·T. Friedrich·H. L. Harney·M. Miski-Oglu·A. Richter·F. Schaefer·H. A. Weidenmueller
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Abstract

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.

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B. Dietz, T. Friedrich, H. L. Harney, M. Miski-Oglu, A. Richter, F. Schaefer, H. A. Weidenmueller. 2007-02-02. Induced Time-Reversal Symmetry Breaking Observed in Microwave Billiards. https://doi.org/10.1103/physrevlett.98.074103

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