General Magnetic Transition Dipole Moments for Electron Paramagnetic Resonance

Abstract

We present general expressions for the magnetic transition rates in beam Electron Paramagnetic Resonance (EPR) experiments of anisotropic spin systems in the solid state. The expressions apply to general spin centers and arbitrary excitation geometry (Voigt, Faraday, and intermediate). They work for linear and circular polarized as well as unpolarized excitation, and for crystals and powders. The expressions are based on the concept of the (complex) magnetic transition dipole moment vector. Using the new theory, we determine the parities of ground and excited spin states of high-spin (S = 5/2) Fe(III) in hemin from the polarization dependence of experimental ground state EPR line intensities.

arXiv comment6 pages, 2 figures

References in corpus (10)

• Quantum Computing in Molecular Magnets
• Ultrastrong coupling of the cyclotron transition of a two-dimensional electron gas to a THz metamaterial
• Decoherence in Crystals of Quantum Molecular Magnets
• Coherent Manipulation and Decoherence of S=10 Single-Molecule Magnets
• Tuning the magnetic ground state of a novel tetranuclear Nickel(II) molecular complex by high magnetic fields
• THz-range free-electron laser ESR spectroscopy: techniques and applications in high magnetic fields
• Quantum Phase Interference and Neel-Vector Tunneling in Antiferromagnetic Molecular Wheels
• Multiphoton coherent manipulation in large-spin qubits
• High-Frequency Microstrip Cross Resonators for Circular Polarization EPR Spectroscopy
• Spin excitations in the antiferromagnet NaNiO2

Cited by in corpus (4)

• Rapid and Precise Determination of Zero-Field Splittings by Terahertz Time-Domain Electron Paramagnetic Resonance Spectroscopy
• Paramagnetic resonance in spin-polarized disordered Bose-Einstein condensates
• Broadband electron paramagnetic resonance spectroscopy of ${}^{167}$Er:${}^7$LiYF${}_4$ at mK temperatures
• Polarization dependence of spin-electric transitions in molecular exchange qubits