content2 = 'Yang Xu

Associate Professor at IOP, CAS

Education:
2007-2011: B.S., University of Science and Technology of China
                  Advisor: Prof. Changgan Zeng

2011-2018: Ph.D., Purdue University, USA
                  Advisor: Prof. Yong P. Chen

Appointment:
2018.06-2020.11: Postdoc Associate, Cornell University, USA
                           Advisor: Prof. Kin Fai Mak and Prof. Jie Shan

2020.12-now: Associate Professor, IOP, CAS

Research Interests:
Quantum transport on topological materials and low-dimensional electronic systems; optical study (magneto-optics, Raman, PL, reflection contrast, etc) on 2D semiconductors, moiré superlattices and 2D magnets.

1. Nano device fabrication：

 

 

Fig.1: Tear-and-stack" method for fabricating twisted bilayer graphene.


2. Exploring the emergent symmetry breaking states and exotic electron correlation phenomena in moiré superlattices：

Fig.2: Moiré superlattice at 1/2 and 1/3 fillings, generalized Wigner crystal states. The filling can be easily tuned by a gate voltage!


3. Topological quantum materials and transport properties：

Fig.3: 3D topological insulator BiSbTeSe2 (BSTS) Hall Bar device and surface-state quantum Hall effect.

 


Selected Publications:
(*Corresponding，#Contribute equally)

         2023:

  1. Qianying Hu#, Zhen Zhan#, Huiying Cui, Yalei Zhang, Feng Jin, Xuan Zhao, Mingjie Zhang, Zhichuan Wang, Qingming Zhang, Kenji Watanabe, Takashi Taniguchi, Xuewei Cao, Wu-Ming Liu, Fengcheng Wu, Shengjun Yuan*, Yang Xu*,"Observation of Rydberg moiré excitons." Science 380, 1367-1372 (2023). 所新闻，央视新闻，人民网，Science公众号等。

  2. Yonghe Liu#, Hanqi Pi#, Kenji Watanabe, Takashi Taniguchi, Genda Gu, Qiang Li, Hongming Weng, Quansheng Wu*, Yongqing Li*, Yang Xu*, "Gate-tunable multiband transport in ZrTe5 thin devices." Nano Letters 23, 5334–5341 (2023).

  3. Xuan Zhao#, Pengfei Shan#, Ningning Wang, Yunliang Li, Yang Xu*, Jinguang Cheng*, "Pressure tuning of optical reflectivity in LuH2." Science Bulletin 68, 883-886 (2023).

  4. Yawen Fang, Yang Xu, Kaifei Kang, Benyamin Davaji, Kenji Watanabe, Takashi Taniguchi, Amit Lal, Kin Fai Mak, Jie Shan, B. J. Ramshaw*, "Quantum Oscillations in Graphene Using Surface Acoustic Wave Resonators", Phys. Rev. Lett. 130, 246201 (2023).
  5. Cheng Chen#, Yuling Yin#, Rencong Zhang#, Qinghong Yuan, Yang Xu, Yushuang Zhang, Jie Chen, Yan Zhang, Chang Li, Junyong Wang, Jie Li, Linfeng Fei, Qiang Yu, Zheng Zhou, Huisheng Zhang, Ruiqing Cheng, Zhuo Dong, Xiaohong Xu, Anlian Pan*, Kai Zhang*, Jun He*, "Growth of single-crystal black phosphorus and its alloy films through sustained feedstock release", Nature Materials 22, 717-724 (2023).
  6. Xinyu Huang, Xu Han, Yunyun Dai, Xiaolong Xu, Jiahao Yan, Mengting Huang, Pengfei Ding, Decheng Zhang, Hui Chen, Vijay Laxmi, Xu Wu, Liwei Liu, Yeliang Wang*, Yang Xu*, and Yuan Huang*, "Recent progress on fabrication and flat-band physics in 2D transition metal dichalcogenides moiré superlattices." Journal of Semiconductors 44, 011901 (2023).
  7. Yanhao Tang, Kaixiang Su, Lizhong Li, Yang Xu, Song Liu, Kenji Watanabe, Takashi Taniguchi, James Hone, Chao-Ming Jian, Cenke Xu, Kin Fai Mak*, Jie Shan, "Evidence of frustrated magnetic interactions in a Wigner–Mott insulator." Nature Nanotechnology 18, 233-237 (2023).

    2022:
     
  8. Mingjie Zhang, Xuan Zhao, Kenji Watanabe, Takashi Taniguchi, Zheng Zhu, Fengcheng Wu, Yongqing Li, Yang Xu*, "Tuning Quantum Phase Transitions at Half Filling in 3L-MoTe2/WSe2 Moiré Superlattices." Physical Review X 12, 041015 (2022). 新闻稿

  9. Honglei Feng, Gang Shi, Dayu Yan, Yong Li, Youguo Shi, Yang Xu, Peng Xiong, Yongqing Li*, "Spin filtering effect in intrinsic 2D magnetic semiconductor Cr2Ge2Te6." Appl. Phys. Lett. 121, 142402 (2022).
  10. Yang Xu*, Kaifei Kang, Kenji Watanabe, Takashi Taniguchi, Kin Fai Mak*, Jie Shan*, "A tunable bilayer Hubbard model in twisted WSe2." Nature Nanotechnology 17, 934-939 (2022). 新闻报道Nature Nanotechnology News & Views highlights.
  11. Honglei Feng, Yong Li, Youguo Shi, Hong-Yi Xie, Yongqing Li, Yang Xu*, "Resistance anomaly and linear magnetoresistance in thin flakes of itinerant ferromagnet Fe3GeTe2", CPL Express Letters 39, 077501 (2022).
  12. Yang Xu, Ariana Ray, Yu-Tsun Shao, Shengwei Jiang, Daniel Weber, Joshua E. Goldberger, Kenji Watanabe, Takashi Taniguchi, David A. Muller, Kin Fai Mak*, Jie Shan*, "Coexisting ferromagnetic–antiferromagnetic state in twisted bilayer CrI3." Nature Nanotechnology 17, 143-147 (2022).

    2021：
     
  13. Yang Xu, Connor Horn, Jiacheng Zhu, Yanhao Tang, Liguo Ma, Lizhong Li, Song Liu, Kenji Watanabe, Takashi Taniguchi, James C. Hone, Jie Shan*, and Kin Fai Mak*, "Creation of moiré bands in a monolayer semiconductor by spatially periodic dielectric screening." Nature Materials 20, 645–649 (2021).
  14. Chenhao Jin*, Zui Tao, Tingxin Li, Yang Xu, Yanhao Tang, Jiacheng Zhu, Song Liu, Kenji Watanabe, Takashi Taniguchi, James C. Hone, Liang Fu*, Jie Shan*, Kin Fai Mak*, "Stripe phases in WSe2/WS2 moiré superlattices." Nature Materials 20, 940–944 (2021).

    Before 2021：
     
  15. Yang Xu*, Song Liu, Daniel A Rhodes, Kenji Watanabe, Takashi Taniguchi, James Hone, Veit Elser*, Kin Fai Mak*, and Jie Shan*, "Correlated insulating states at fractional fillings of moiré superlattices." Nature 587, 214–218 (2020).
  16. Yanhao Tang, Lizhong Li, Tingxin Li, Yang Xu, Song Liu, Katayun Barmak, Kenji Watanabe, Takashi Taniguchi, Allan H. MacDonald, Jie Shan*, and Kin Fai Mak*, "Simulation of Hubbard model physics in WSe2/WS2 moiré superlattices." Nature 579, 353-358 (2020).
  17. Yang Xu, Guodong Jiang, Ireneusz Miotkowski, Rudro R. Biswas, and Yong P. Chen*, "Tuning insulator-semimetal transitions in thin 3D topological insulators by hybridization and in-plane magnetic fields." Physical Review Letters 123, 207701 (2019).
  18. Tingxin Li, Shengwei Jiang, Nikhil Sivadas, Zefang Wang, Yang Xu, Daniel Weber, Joshua E. Goldberger, Kenji Watanabe, Takashi Taniguchi, Craig J. Fennie, Kin Fai Mak*, and Jie Shan*, "Pressure-controlled interlayer magnetism in atomically thin CrI3." Nature Materials 18, 1303-1308 (2019).
  19. Ting-Fung Chung#, Yang Xu#, and Yong P. Chen*, "Transport Measurements in Twisted Bilayer Graphene: Studies of Electron-Phonon Coupling and Landau Level Crossing." Physical Review B 98, 035425 (2018).
  20. Yang Xu, Ireneusz Miotkowski, and Yong P. Chen*, "Quantum transport of two- species Dirac fermions in dual-gated three-dimensional topological insulators." Nature Communications 7, 11434 (2016).
  21. Yang Xu, Ireneusz Miotkowski, Chang Liu, Jifa Tian, Hyoungdo Nam, Nasser Alidoust, Jiuning Hu, Chih-Kang Shih, M Zahid Hasan, and Yong P Chen*, "Observation of topological surface state quantum Hall effect in an intrinsic three- dimensional topological insulator." Nature Physics 10, 956-963 (2014).
  22. Hui Zhang, Jin-Ho Choi, Yang Xu, Xiuxia Wang, Xiaofang Zhai, Bing Wang, Changgan Zeng*, Jun-Hyung Cho*, Zhenyu Zhang, and JianGuo Hou, "Atomic structure, energetics, and dynamics of topological solitons in indium chains on Si (111) surfaces." Physical Review Letters 106, 026801 (2011).

Hiring:
Highly motivated students can contact for internship, PhD or Post-doc opportunities.

Email: yang.xu@iphy.ac.cn

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