Detecting topological phase transition in monolayer jacutingaite Pt2HgSe3 via thermal and magnetic properties

IF 2.5 3区物理与天体物理 Q3 NANOSCIENCE & NANOTECHNOLOGY

Physica E-low-dimensional Systems & Nanostructures Pub Date : 2026-01-01 Epub Date: 2025-10-23 DOI:10.1016/j.physe.2025.116395

Tran Cong Phong , Ta T. Tho , Le T.T. Phuong

{"title":"Detecting topological phase transition in monolayer jacutingaite Pt2HgSe3 via thermal and magnetic properties","authors":"Tran Cong Phong , Ta T. Tho , Le T.T. Phuong","doi":"10.1016/j.physe.2025.116395","DOIUrl":null,"url":null,"abstract":"<div><div>We investigate the topological properties of monolayer jacutingaite Pt<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>HgSe<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span> by analyzing its thermal and magnetic responses under static and dynamic electric fields. In doing so, we use the Kane–Mele model and the semiclassical Boltzmann approach. Through semiclassical calculations, we demonstrate how topological phase transitions induced by these fields are reflected in the material’s electronic heat capacity and Pauli spin susceptibility. We find that in the semimetallic phase, the low-temperature regime exhibits the highest magnitudes of these properties. In contrast, the responses are weaker and stronger for the band insulator and quantum Hall insulator phases, respectively, than the pristine quantum spin Hall insulator phase. This work offers a pathway for detecting topological features in the thermal and magnetic properties of materials.</div></div>","PeriodicalId":20181,"journal":{"name":"Physica E-low-dimensional Systems & Nanostructures","volume":"175 ","pages":"Article 116395"},"PeriodicalIF":2.5000,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physica E-low-dimensional Systems & Nanostructures","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1386947725002255","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/10/23 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"NANOSCIENCE & NANOTECHNOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

We investigate the topological properties of monolayer jacutingaite Pt

_{2}

HgSe

_{3}

by analyzing its thermal and magnetic responses under static and dynamic electric fields. In doing so, we use the Kane–Mele model and the semiclassical Boltzmann approach. Through semiclassical calculations, we demonstrate how topological phase transitions induced by these fields are reflected in the material’s electronic heat capacity and Pauli spin susceptibility. We find that in the semimetallic phase, the low-temperature regime exhibits the highest magnitudes of these properties. In contrast, the responses are weaker and stronger for the band insulator and quantum Hall insulator phases, respectively, than the pristine quantum spin Hall insulator phase. This work offers a pathway for detecting topological features in the thermal and magnetic properties of materials.

查看原文本刊更多论文

利用热磁性能检测单层jacutingaite Pt2HgSe3的拓扑相变

通过分析静、动态电场作用下的热响应和磁响应，研究了单层jacutingaite Pt2HgSe3的拓扑性质。在此过程中，我们使用Kane-Mele模型和半经典玻尔兹曼方法。通过半经典计算，我们证明了这些场诱导的拓扑相变如何反映在材料的电子热容量和泡利自旋磁化率上。我们发现，在半金属相中，低温区表现出这些性质的最高幅度。相比之下，带绝缘子和量子霍尔绝缘子相的响应分别比原始量子自旋霍尔绝缘子相弱和强。这项工作为检测材料的热学和磁性的拓扑特征提供了一条途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Physica E-low-dimensional Systems & Nanostructures 物理-纳米科技

CiteScore

7.30

自引率

6.10%

发文量

356

审稿时长

65 days

期刊介绍： Physica E: Low-dimensional systems and nanostructures contains papers and invited review articles on the fundamental and applied aspects of physics in low-dimensional electron systems, in semiconductor heterostructures, oxide interfaces, quantum wells and superlattices, quantum wires and dots, novel quantum states of matter such as topological insulators, and Weyl semimetals. Both theoretical and experimental contributions are invited. Topics suitable for publication in this journal include spin related phenomena, optical and transport properties, many-body effects, integer and fractional quantum Hall effects, quantum spin Hall effect, single electron effects and devices, Majorana fermions, and other novel phenomena. Keywords: • topological insulators/superconductors, majorana fermions, Wyel semimetals; • quantum and neuromorphic computing/quantum information physics and devices based on low dimensional systems; • layered superconductivity, low dimensional systems with superconducting proximity effect; • 2D materials such as transition metal dichalcogenides; • oxide heterostructures including ZnO, SrTiO3 etc; • carbon nanostructures (graphene, carbon nanotubes, diamond NV center, etc.) • quantum wells and superlattices; • quantum Hall effect, quantum spin Hall effect, quantum anomalous Hall effect; • optical- and phonons-related phenomena; • magnetic-semiconductor structures; • charge/spin-, magnon-, skyrmion-, Cooper pair- and majorana fermion- transport and tunneling; • ultra-fast nonlinear optical phenomena; • novel devices and applications (such as high performance sensor, solar cell, etc); • novel growth and fabrication techniques for nanostructures