【报告题目】：Tuning Landau Levels and Valleytronics in Monolayer Pt2HgSe3via External Fields
【报 告 人】：Muzamil Shah，Quaid-i-Azam University
【报告时间】：2026年8月31日（周一）14:00
【报告地点】：29幢414报告厅
【报告摘要】：In this talk, I will present a theoretical framework for quantum magnetotransport in monolayer Pt2HgSe3under multiple external fields. The contents of this talk include four main aspects:(i)we analyze topological phase transitions triggered by tuning electric fields and off-resonant circularly polarized laser irradiation, with emphasis on transport properties;(ii)we study Landau level formation under a perpendicular magnetic field, focusing on spin- and valley-polarized splitting of the zeroth Landau level, which leads to four distinct peaks in the density of states for the K and K' valleys;(iii)we demonstrate that reversing the electric field or flipping the light helicity changes the Dirac mass sign in specific spin-valley sectors, which in turn reverses both the Berry curvature and the orbital magnetic moment; and(iv)we showcase how external electric, magnetic, and optical fields can collectively control spin-valley resolved conductivities, establishing monolayer jacutingaite as a highly tunable platform for photonics, optoelectronics, and topological quantum devices.
【报告人简介】：Muzamil Shah received his M.Sc and M.Phil degrees from Quaid-i-Azam University, Islamabad, Pakistan, in 2010 and 2012, respectively. Later on, he completed his Ph.D in 2021 from the department of physics, LUMS. The applied areas of his research include quantum transport, Faraday and Kerr rotation, Goos-Hanchen and Imbert-Fedorov shifts. Dr. Muzamil Shah is currently serving as an Assistant Professor at the department of physics, Quaid-i-Azam University, Islamabad, Pakistan.
