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Science & ResearchJul 29, 2026

The electric field gradient tensor as a symmetry-adapted order parameter in Landau theory

Quadrupolar hyperfine spectroscopies, including Nuclear Quadrupole Resonance (NQR), Nuclear Magnetic Resonance (NMR), Time-Differential Perturbed Angular Correlations (TDPAC), and Mössbauer spectroscopy, have long used the electric field…

Quadrupolar hyperfine spectroscopies, including Nuclear Quadrupole Resonance (NQR), Nuclear Magnetic Resonance (NMR), Time-Differential Perturbed Angular Correlations (TDPAC), and Mössbauer spectroscopy, have long used the electric field gradient (EFG) at a nuclear site as an…

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