Matches in SemOpenAlex for { <https://semopenalex.org/work/W1974610200> ?p ?o ?g. }
- W1974610200 abstract "The magnetoelectric effect of chromium sesquioxide ${mathrm{Cr}}_{2}{mathrm{O}}_{3}$ has been determined experimentally as a function of temperature. One measures the electric field-induced magnetization on ${mathrm{Cr}}_{2}{mathrm{O}}_{3}$ crystals or the magnetic field-induced polarization. From the magnetoelectric moduli of ${mathrm{Cr}}_{2}{mathrm{O}}_{3}$ we extract a four-dimensional relativistic invariant pseudoscalar $stackrel{ifmmode tilde{}else ~{}fi{}}{ensuremath{alpha}}$. It is temperature dependent and of the order of $ensuremath{sim}{10}^{ensuremath{-}4}∕{Z}_{0}$, with ${Z}_{0}$ as vacuum impedance. We show that the new pseudoscalar is odd under parity transformation and odd under time inversion. Moreover, $stackrel{ifmmode tilde{}else ~{}fi{}}{ensuremath{alpha}}$ is for ${mathrm{Cr}}_{2}{mathrm{O}}_{3}$ what Tellegen's gyrator is for two port theory, the axion field for axion electrodynamics, and the PEMC (perfect electromagnetic conductor) for electrical engineering." @default.
- W1974610200 created "2016-06-24" @default.
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- W1974610200 date "2008-02-14" @default.
- W1974610200 modified "2023-10-15" @default.
- W1974610200 title "Relativistic nature of a magnetoelectric modulus of<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mi mathvariant=normal>Cr</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant=normal>O</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>crystals: A four-dimensional pseudoscalar and its measurement" @default.
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- W1974610200 doi "https://doi.org/10.1103/physreva.77.022106" @default.
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