Ultrafast extreme-ultraviolet ARPES studies of electronic dynamics in two-dimensional materials

Ultrafast extreme-ultraviolet ARPES studies of electronic dynamics in two-dimensional materials
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二维材料电子动力学的超快极紫外 ARPES 研究

DOI:
10.1117/12.2251249
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
R. A. Kaindl
R. A. Kaindl
中科院分区:
--
文献类型:
--
作者:
J. H. Buß;J. Maklar;F. Joucken;H. Wang;S.-K. Mo;A. Lanzara;R. A. Kaindl

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二维材料耐人寻味的电子性质激发了实验,以解决它们在动量空间中快速、微观的相互作用和动力学。通过时间和角度分辨光电子能谱(TrARPES)可以直接获得对电子动量-空间动力学的本质洞察。我们讨论了高重复率TrARPES装置的发展,该装置使用了约22.3 eV的窄带极紫外谐振源,以及它在材料动力学敏感研究中的应用。在过渡金属二硫代化合物MoSe2中,在k点激子线处共振激发后观察到动量空间准粒子散射,导致在Σ点导带极小处电子的延迟积累。我们将讨论这一点和其他方面的非平衡电子反应可用极端紫外trARPES探测器。
The intriguing electronic properties of two-dimensional materials motivates experiments to resolve their rapid, microscopic interactions and dynamics across momentum space. Essential insight into the electronic momentum-space dynamics can be obtained directly via time- and angle-resolved photoemission spectroscopy (trARPES). We discuss the development of a high-repetition rate trARPES setup that employs a bright source of narrowband, extreme-UV harmonics around 22.3 eV, and its application to sensitive studies of materials dynamics. In the bulk transition-metal dichalcogenide MoSe2momentum-space quasiparticle scattering is observed after resonant excitation at theK-point exciton line, resulting in the time-delayed buildup of electrons at the Σ-point conduction band minimum. We will discuss this and other aspects of the non-equilibrium electronic response accessible with the extreme-UV trARPES probe.
DOI: 10.1364/oe.17.017376
发表时间: 2009-09-28
期刊: OPTICS EXPRESS
影响因子: 3.8
作者:
Chen, M. -C.;Gerrity, M. R.;Murnane, M. M.
通讯作者: Murnane, M. M.
DOI: 10.1103/physrevb.94.205406
发表时间: 2016-11-07
期刊: PHYSICAL REVIEW B
影响因子: 3.7
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通讯作者: Bauer, M.