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Latest

• Measurement of the Spontaneous Polar Kerr Effect in YBa$_2$Cu$_3$O$_7$ and Bi$_2$Sr$_2$CaCu$_2$O$_8$
• Test for Nonreciprocal Circular Birefringence in Bi$_2$Sr$_2$CaCu$_2$O$_8$