1.7k citations · 5.2k across the 108 of their papers we have counts for
4 papers · 1 filter
Irreducible decompositions of the elasticity tensor under the linear and orthogonal groups and their physical consequences
Yakov Itin, Friedrich W. Hehl
We study properties of the fourth rank elasticity tensor C within linear elasticity theory. First C is irreducibly decomposed under the linear group into a "Cauchy piece" S (with 1…
The constitutive tensor of linear elasticity: its decompositions, Cauchy relations, null Lagrangians, and wave propagation
Yakov Itin, Friedrich W. Hehl
In linear anisotropic elasticity, the elastic properties of a medium are described by the fourth rank elasticity tensor C. The decomposition of C into a partially symmetric tensor…
Magnetoelectric Cr_2 O_3 and relativity theory
Friedrich W. Hehl, Yuri N. Obukhov, Jean-Pierre Rivera +1
Relativity theory is useful for understanding the phenomenology of the magnetoelectric effect of the antiferromagnet chromium sesquioxide Cr_2 O_3 in two respects: (i) One gets a c…
Relativistic nature of a magnetoelectric modulus of Cr_2O_3-crystals: a new 4-dimensional pseudoscalar and its measurement
Friedrich W. Hehl, Yuri N. Obukhov, Jean-Pierre Rivera +1
Earlier, the magnetoelectric effect of chromium sesquioxide Cr_2O_3 has been determined experimentally as a function of temperature. One measures the electric field-induced magneti…