In this talk, he would like to provide an overview of his research over the past few years. His main research focus is on topological phases under either equilibrium or nonequilibrium conditions. This divides his talk into two (but nonorthogonal) parts.

On the equilibrium, or static, side, he first focus on topological superconductors by showing how to probe Majoranas with STM/transport and Josephson junctions. He will then consider general topological phases by introducing the higher-order topological systems, which host corner/hinge modes in 2D/3D. Moreover, he will propose a practical platform for engineering 1D chiral Majorana hinge modes in 3D.

On the nonequilibrium side, he would like to demonstrate that the time-dependence introduces new degrees of freedom and can be used to create synthetic dimensions  and multiple types of boundary modes . Moreover, he will demonstrate that by engineering the driving protocol, Floquet higher-order topological phases can also be created.

Refs:

Yang Peng, Falko Pientka, Leonid I. Glazman, Felix von Oppen, Phys. Rev. Lett. 114, 106801, 2015

Michael Ruby, Falko Pientka, Yang Peng, Felix von Oppen, Benjamin W. Heinrich, Katharina J. Franke,  Phys. Rev. Lett. 115, 087001, 2015

Michael Ruby, Falko Pientka, Yang Peng, Felix von Oppen, Benjamin W. Heinrich, Katharina J. Franke, Phys. Rev. Lett. 115, 197204, 2015

Yang Peng, Falko Pientka, Yuval Vinkler-Aviv, Leonid I. Glazman, Felix von Oppen, Robust, Phys. Rev. Lett. 115, 266804, 2015

Michael Ruby, Yang Peng, Felix von Oppen, Benjamin W. Heinrich, Katharina J. Franke, Phys. Rev. Lett. 117, 186801, 2016

Michael Ruby, Benjamin W. Heinrich, Yang Peng, Felix von Oppen, Katharina J. Franke, Nano Lett., 17(7), pp 4473–4477, 2017

Michael Ruby, Benjamin W. Heinrich, Yang Peng, Felix von Oppen, and Katharina J. Franke,  Phys. Rev. Lett. 120, 156803, 2018

Yang Peng, Falko Pientka, Erez Berg, Yuval Oreg, Felix von Oppen,  Phys. Rev. B, 94, 085409, 2016(Editors' Suggestion)

Yang Peng, Yuval Vinkler-Aviv, Piet W. Brouwer, Leonid I. Glazman, Felix von Oppen,  Phys. Rev. Lett. 117, 267001, 2016

Yang Peng, Yimu Bao, Felix von Oppen, Phys. Rev. B, 95, 235143, 2017

Josias Langbehn, Yang Peng, Luka Trifunovic, Felix von Oppen, Piet W. Brouwer, Phys. Rev. Lett. 119, 246401, 2017 (Editors's Suggestion and selected for a Viewpoint in Physics.)

Yang Peng and Yong Xu, arXiv:1809.09112, 2018

Yang Peng and Gil Refael, Phys. Rev. B 97, 134303, 2018

Yang Peng and Gil Refael, Phys. Rev. B 98, 220509(R), 2018

Yang Peng and Gil Refael,  arxiv:1811.11752, 2018

报告人简介：Dr. Peng obtained his B.S from Peking University in 2012 and his PhD degree from Freie Universität Berlin in 2017. He became a Sherman Fairchild postdoctoral fellow in theoretical physics at Caltech after graduation. He has worked on various topological systems, ranging from topological insulators and superconductors, under equilibrium and nonequilibrium conditions. He has extensive experiences on signatures of Majorana bound states in topological superconductors. He is also one of the pioneers in the field of higher-order topological insulators.

彭阳海报-终板.pdf