Prof Yulin Chen: Publications

A VUV sub-micron hotspot for photoemission spectroscopy

Vacuum ultraviolet (VUV) lasers have exhibited great potential as the light source for various spectroscopies, which, if they can be focused into a smaller beam spot, will not only allow investigation of mesoscopic materials but also find applications in manufacture of nano-objects with excellent precision. Towards this goal, scientists in China invented a 177 nm VUV laser system that can achieve a record-small (<1 μm) focal spot at a long focal length (~45 mm). This system can be re-equipped for usage in low-cost ARPES and might benefit quantum materials, condensed matter physics and nanophotonics.

Measurement of electronic structure and surface reconstruction in the superionic Cu2−xTe

Physical Review B American Physical Society (APS) 103:11 (2021) 115127

Authors:

S Liu, W Xia, K Huang, D Pei, T Deng, AJ Liang, J Jiang, HF Yang, J Zhang, HJ Zheng, YJ Chen, LX Yang, YF Guo, MX Wang, ZK Liu, YL Chen

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A charge-density-wave topological semimetal

Nature Physics Springer Nature 17:3 (2021) 381-387

Authors:

Wujun Shi, Benjamin J Wieder, Holger L Meyerheim, Yan Sun, Yang Zhang, Yiwei Li, Lei Shen, Yanpeng Qi, Lexian Yang, Jagannath Jena, Peter Werner, Klaus Koepernik, Stuart Parkin, Yulin Chen, Claudia Felser, B Andrei Bernevig, Zhijun Wang

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Visualization of the electronic phase separation in superconducting KxFe2−ySe2

Nano Research Springer Nature 14:3 (2021) 823-828

Authors:

Yujie Chen, Juan Jiang, Haifeng Yang, Pavel Dudin, Alexey Barinov, Zhongkai Liu, Haihu Wen, Lexian Yang, Yulin Chen

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Publisher Correction: A charge-density-wave topological semimetal

Nature Physics Springer Nature 17:2 (2021) 284-284

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A vacuum ultraviolet laser with a submicrometer spot for spatially resolved photoemission spectroscopy.

Light, science & applications 10:1 (2021) 22

Authors:

Yuanhao Mao, Dong Zhao, Shen Yan, Hongjia Zhang, Juan Li, Kai Han, Xiaojun Xu, Chuan Guo, Lexian Yang, Chaofan Zhang, Kun Huang, Yulin Chen

Abstract:

Vacuum ultraviolet (VUV) lasers have demonstrated great potential as the light source for various spectroscopies, which, if they can be focused into a small beam spot, will not only allow investigation of mesoscopic materials and structures but also find application in the manufacture of nano-objects with excellent precision. In this work, we report the construction of a 177 nm VUV laser that can achieve a record-small (~0.76 μm) focal spot at a long focal length (~45 mm) by using a flat lens without spherical aberration. The size of the beam spot of this VUV laser was tested using a metal grating and exfoliated graphene flakes, and we demonstrated its application in a fluorescence spectroscopy study on pure and Tm³⁺-doped NaYF₄ microcrystals, revealing a new emission band that cannot be observed in the traditional up-conversion process. In addition, this laser system would be an ideal light source for spatially and angle-resolved photoemission spectroscopy.

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Prof Yulin Chen

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Measurement of electronic structure and surface reconstruction in the superionic Cu2−xTe

Authors:

A charge-density-wave topological semimetal

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Visualization of the electronic phase separation in superconducting KxFe2−ySe2

Authors:

Publisher Correction: A charge-density-wave topological semimetal

Authors:

A vacuum ultraviolet laser with a submicrometer spot for spatially resolved photoemission spectroscopy.

Authors:

Abstract:

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Prof Yulin Chen

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Measurement of electronic structure and surface reconstruction in the superionic Cu2−xTe

Authors:

A charge-density-wave topological semimetal

Authors:

Visualization of the electronic phase separation in superconducting KxFe2−ySe2

Authors:

Publisher Correction: A charge-density-wave topological semimetal

Authors:

A vacuum ultraviolet laser with a submicrometer spot for spatially resolved photoemission spectroscopy.

Authors:

Abstract: