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Measurement of the electron electric dipole moment using GdIG

B. J. Heidenreich·O. T. Elliott·N. D. Charney·K. A. Virgien·A. W. Bridges·M. A. McKeon·S. K. Peck·D. Krause, Jr.·J. E. Gordon·L. R. Hunter·S. K. Lamoreaux
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Abstract

A new method for the detection of the electron edm using a solid is described. The method involves the measurement of a voltage induced across the solid by the alignment of the samples magnetic dipoles in an applied magnetic field, H. A first application of the method to GdIG has resulted in a limit on the electron edm of 5E-24 e-cm, which is a factor of 40 below the limit obtained from the only previous solid-state edm experiment. The result is limited by the imperfect discrimination of an unexpectedly large voltage that is even upon the reversal of the sample magnetization.

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B. J. Heidenreich, O. T. Elliott, N. D. Charney, K. A. Virgien, A. W. Bridges, M. A. McKeon, S. K. Peck, D. Krause, Jr., J. E. Gordon, L. R. Hunter, S. K. Lamoreaux. 2005-10-27. Measurement of the electron electric dipole moment using GdIG. https://doi.org/10.1103/physrevlett.95.253004

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