Quantum capacitance of dressed monolayer jacutingaite Pt2HgSe3

Chúng tôi vui mừng thông GS.TS Trần Công Phong và các đồng nghiệp đã xuất bản công trình có tựa đề “Quantum capacitance of dressed monolayer jacutingaite Pt2HgSe3” trên tạp chí Physica B: Condensed Matter.

Tóm tắt:

To optimize next-generation electronic and quantum devices based on low-dimensional systems, accurately evaluating the total capacitance – particularly the quantum capacitance (QC) – is essential. In this study, we employ the Kane–Mele model alongside the Boltzmann transport approach to show how QC can be effectively tuned through topological phase transitions in monolayer jacutingaite (PtHgSe) under the influence of static and dynamic electric fields. Remarkably, we find that QC is significantly enhanced when the system undergoes a transition from a quantum spin Hall insulator phase to a semimetallic phase. In contrast, QC is suppressed when the transition leads to a band insulator or quantum Hall insulator phase. We further explore how QC responds to variations in temperature and static electric field strength as a function of the applied dynamic electric field.