Ultrafast X-ray Diffraction Probe of Coherent Spin-state Dynamics in Molecules
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| _version_ | 1866909058295922688 |
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| author | Mi, Xiaoyu Zhang, Ming Li, Zheng |
| author_facet | Mi, Xiaoyu Zhang, Ming Li, Zheng |
| contents | We propose an approach to probe coherent spin-state dynamics of molecules using circularly polarized hard x-ray pulses. For the dynamically aligned nitric oxide molecules in a coherent superposition spin-orbit coupled electronic state that can be prepared through stimulated Raman scattering, we demonstrate the capability of ultrafast x-ray diffraction to not only reveal the quantum beating of the coherent spin-state wave packet, but also image the spatial spin density of the molecule. With circularly polarized ultrafast x-ray diffraction signal, we show that the electronic density matrix can be retrieved. The spatio-temporal resolving power of ultrafast x-ray diffraction paves the way for tracking transient spatial wave function in molecular dynamics involving spin degree of freedom. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_00259 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Ultrafast X-ray Diffraction Probe of Coherent Spin-state Dynamics in Molecules Mi, Xiaoyu Zhang, Ming Li, Zheng Optics Chemical Physics We propose an approach to probe coherent spin-state dynamics of molecules using circularly polarized hard x-ray pulses. For the dynamically aligned nitric oxide molecules in a coherent superposition spin-orbit coupled electronic state that can be prepared through stimulated Raman scattering, we demonstrate the capability of ultrafast x-ray diffraction to not only reveal the quantum beating of the coherent spin-state wave packet, but also image the spatial spin density of the molecule. With circularly polarized ultrafast x-ray diffraction signal, we show that the electronic density matrix can be retrieved. The spatio-temporal resolving power of ultrafast x-ray diffraction paves the way for tracking transient spatial wave function in molecular dynamics involving spin degree of freedom. |
| title | Ultrafast X-ray Diffraction Probe of Coherent Spin-state Dynamics in Molecules |
| topic | Optics Chemical Physics |
| url | https://arxiv.org/abs/2401.00259 |