Coherent two-dimensional THz magnetic resonance spectroscopies for molecular magnets: Analysis of Dzyaloshinskii-Moriya interaction
arXiv:2306.10222 · doi:10.1063/5.0156264
Abstract
To investigate the novel quantum dynamic behaviors of magnetic materials that arise from complex spin-spin interactions, it is necessary to probe the magnetic response at a speed greater than the spin-relaxation and dephasing processes. Recently developed two-dimensional (2D) terahertz magnetic resonance (THz-MR) spectroscopy techniques use the magnetic components of laser pulses, and this allows investigation of the details of the ultrafast dynamics of spin systems. For such investigations, quantum treatment -- not only of the spin system itself but also of the environment surrounding the spin system -- is important. In our method, based on the theory of multidimensional optical spectroscopy, we formulate nonlinear THz-MR spectra using an approach based on the numerically rigorous hierarchical equations of motion. We conduct numerical calculations of both linear (1D) and 2D THz-MR spectra for a linear chiral spin chain. The pitch and direction of chirality (clockwise or anticlockwise) are determined by the strength and sign of the Dzyaloshinskii-Moriya interaction (DMI). We show that not only the strength but also the sign of the DMI can be evaluated through the use of 2D THz-MR spectroscopic measurements, while 1D measurements allow us to determine only the strength.
10 pages, 5 figures
References in corpus (14)
- Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
- Chiral Quantum Optics
- Perspective: Numerically "exact" approach to open quantum dynamics: The hierarchical equations of motion (HEOM)
- Spin Oscillations in Antiferromagnetic NiO Triggered by Circularly Polarized Light
- Magnon dispersion shift in the induced-ferromagnetic phase of the noncentrosymmetric MnSi
- Analysis of 2D THz-Raman spectroscopy using a non-Markovian Brownian oscillator model with nonlinear system-bath interactions
- Two-Dimensional Terahertz Spectroscopy of Condensed-Phase Molecular Systems
- Establishing the fundamental magnetic interactions in the chiral skyrmionic Mott insulator Cu2OSeO3 by terahertz electron spin resonance
- Chirality-Induced Spin Filtering in Pseudo Jahn-Teller Molecules
- Generation of third-harmonic spin oscillation from strong spin precession induced by terahertz magnetic near fields
- Open Quantum Dynamics of a Three-Dimensional Rotor Calculated Using a Rotationally Invariant System-Bath Hamiltonian: Linear and Two-Dimensional Rotational Spectra
- Open Quantum Dynamics Theory of Spin Relaxation: Application to SR and Low-Field NMR Spectroscopies
- Discretized hierarchical equations of motion in mixed Liouville--Wigner space for two-dimensional vibrational spectroscopies of liquid water
- Magnetic terahertz resonances above the Néel temperature in the frustrated kagome antiferromagnet averievite