Quantum capacitance of dressed monolayer jacutingaite Pt2HgSe3

We are happy to announce that Prof. Dr. Cong Phong Tran and colleagues recently published their work entitled “Quantum capacitance of dressed monolayer jacutingaite Pt2HgSe3” in the Physica B: Condensed Matter.

Abstract:

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.