Welcome to Yu Ye's research group in the School of Physics at Perking University. We are interested in light-matter interactions and electrical properties in condensed matter physics, with an emphasis on novel physical phenomena emerging in atomically-thin materials, van der Waals heterostructures and surfaces/interfaces by nanoscale device designs, optical spectroscopy, electrical transport, and scanning photocurrent measurements.
 Nonvolatile MoS2 field effect transistors directly gated by single crystalline epitaxial ferroelectric
Zhongyuan Lu, Claudy Serrao, Asif Islam Khan, Long You, Justin C. Wong, Yu Ye, Hanyu Zhu, Xiang Zhang and Sayeef Salahuddin, Applied Physics Letters, 111, 023104 (2017).
 Anomalous in-plane anisotropic Raman response of monoclinic semimetal 1T'-MoTe2
Qingjun Song, Haifeng Wang, Xingchen Pan, Xiaolong Xu, Yilun Wang, Yanping Li, Fengqi Song, Xiangang Wan✉, Yu Ye✉ and Lun Dai✉, Scientific Reports, 7, 1758 (2017).
 In-plane anisotropies of polarized Raman response and electrical conductivity in layered tin selenide
Xiaolong Xu, Qingjun Song, Haifeng Wang, Pan Li, Kun Zhang, Yilun Wang, Kai Yuan, Zichen Yang, Yu Ye✉ and Lun Dai✉, ACS Applied Materials & Interfaces DOI:101021/acsami.7b00782.
 High thermoelectric power factor in two-dimensional crystals of MoS2
Kedar Hippalgaonkar#, Ying Wang#, Yu Ye# (equal contribution), Diana Y. Qiu, Hanyu Zhu, Yuan Wang, Joel Moore, Steven G. Louie and Xiang Zhang, Physical Review B 95, 115407 (2017).
 Ultrasensitive near-infrared photodetectors based on a graphene-MoTe2-graphene vertical van der Waals heterostructure
Kun Zhang, Xin Fang, Yilun Wang, Yi Wan, Qingjun Song, Wenhao, Zhai, Yanping Li, Guangzhao Ran, Yu Ye✉ and Lun Dai✉, ACS Applied Materials & Interfaces DOI:10.1021/acsami.6b14483.
August 2017: Professor Xingjie Ni from Pennsylvania State University visited our lab.
July 2017: Yu presented an invited talk of "Control of valley polarization of single-layer transition metal dichalcogenide through interaction with III-V crystals" at "The 3rd international symposium of flexible and stretchable electronics", Wuhan.
May 2017: Yu invited Professor Liying Jiao from Tsinghua University give a talk of "Two-dimensional transition metal dichalcogenide synthesis and characterizations" at "The Forum on Condensed Matter Physics, Peking Univerity".
April 2017: Yu presented an invited symposium talk of "Electrical generation and control of the valley carriers in a monolayer transition metal dichalcogenide" at "Intermag 2017", Dublin.
April 2017: Yu presented an invited talk of "Two-dimensional ferromagnetic van der Waals heterostructures" at "IEEE EDS Hangzhou chapter microelectronics + 2D materials workshop", Hangzhou.