Magnetic Properties and Spectroscopy in Strong Fields
Summary
Strong magnetic fields profoundly alter the electronic and structural characteristics of atoms, molecules and condensed matter. Under such conditions, electron orbitals distort, spin–orbit couplings intensify and novel magnetic phases emerge. Spectroscopic techniques—including absorption, emission and dichroic methods—provide direct insight into these effects, revealing shifts in transition energies, the emergence of forbidden bands and field‐induced symmetry breaking. Theoretical advances in current‐density functional theory and real‐time time‐dependent electronic structure methods now permit accurate prediction of spectra across the ultraviolet, visible and infrared regions. Together, experiment and computation have uncovered exotic bonding motifs, magnetic anisotropies and topology‐driven phenomena, with implications for molecular electronics, astrochemistry and quantum information science.
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Magnetic Properties and Spectroscopy in Strong Fields publication trend
The graph below shows the total number of articles in magnetic properties and spectroscopy in strong fields across all publications each year (not limited to Nature Index journals).
Technical terms
Magnetic circular dichroism (MCD): differential absorption of left- and right-circularly polarised light induced by a magnetic field.
Magnetic circularly polarised luminescence (MCPL): emission analogue of MCD, measuring circular polarisation of luminescence under magnetic fields.
Current‐density functional theory (CDFT): an extension of density functional theory that includes electronic current densities to account for magnetic field interactions.
Real-time time-dependent Hartree-Fock (RT-TDHF): a computational method for tracking ultrafast electron dynamics by propagating electronic wavefunctions in real time.
Electric-dipole approximation: assumption that light–matter interactions are dominated by electric dipole transitions, neglecting higher multipolar contributions.
London orbitals: gauge-including basis functions designed to maintain invariance of molecular integrals in the presence of a magnetic vector potential.
References
- Experimental and theoretical aspects of magnetic circular dichroism and magnetic circularly polarized luminescence in the UV, visible and IR ranges: A review. Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy (2024).
- Modeling Ultrafast Electron Dynamics in Strong Magnetic Fields Using Real-Time Time-Dependent Electronic Structure Methods. Journal of Chemical Theory and Computation (2021).
- Going beyond the electric-dipole approximation in the calculation of absorption and (magnetic) circular dichroism spectra including scalar relativistic and spin–orbit coupling effects. The Journal of Chemical Physics (2022).
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