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- W4381551131 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." @default.
- W4381551131 created "2023-06-22" @default.
- W4381551131 creator A5020583839 @default.
- W4381551131 creator A5036458048 @default.
- W4381551131 date "2023-06-16" @default.
- W4381551131 modified "2023-10-18" @default.
- W4381551131 title "Coherent two-dimensional THz magnetic resonance spectroscopies for molecular magnets: Analysis of Dzyaloshinskii-Moriya interaction" @default.
- W4381551131 doi "https://doi.org/10.48550/arxiv.2306.10222" @default.
- W4381551131 hasPublicationYear "2023" @default.
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