Exotic Properties in Synthetic Low-Dimensional Materials

by Prof. Baojie Feng (Institute of Physics, Chinese Academy of Sciences)

Friday 25 Apr 2025, 10:00 → 11:00 Asia/Shanghai

Tsung-Dao Lee Institute/N6F-N601 - Meeting Room (Tsung-Dao Lee Institute)

Host: Prof. Hemian Yi

Venue: TDLI Meeting Room N601

Tencent Meeting link: 

https://meeting.tencent.com/dm/D1Kd9E3xffIn Meeting ID: 186103561, no password

 

Abstract:

Synthetic low-dimensional materials do not have 3D parent materials and cannot be obtained through top-down methods such as mechanical or chemical exfoliation; they can only be fabricated via epitaxial growth. Over the past decade, we have successfully synthesized various important synthetic low-dimensional materials, such as silicene and borophene, and realized multiple topological electronic states previously found only in 3D materials. In recent years, using molecular beam epitaxy, we have prepared a variety of 1D materials with topological properties, including silicon nanoribbons, phosphorus nanoribbons, and CuTe chains. By employing angle-resolved photoemission spectroscopy (ARPES), scanning tunneling microscopy (STM), and theoretical calculations, we have confirmed the existence of topological electronic states in these materials. These discoveries demonstrate the significant application propects of low-dimensional synthetic materials.

 

Biography:

Baojie Feng received his B.S. degree from Shandong University in July 2009 and his Ph.D. from the Institute of Physics, Chinese Academy of Sciences in January 2015. From October 2013 to March 2014, he was a visiting scholar at the University of California, Irvine. From May 2015 to March 2017, he conducted postdoctoral research at the University of Tokyo, Japan. Subsequently, from April 2017 to August 2018, he served as an Assistant Professor at the Synchrotron Radiation Center of Hiroshima University, Japan. In September 2018, he joined the Institute of Physics, Chinese Academy of Sciences.