Jeongmin Kim, Seonhye Youn, Damin Lee, Chan Woong Kim, Hongjae Moon, Seok-Hwan Chung, Hoyoung Kim, Dong Hwan Kim, Sumin Kim, Jong Wook Roh, Joonho Bang, Wooyoung Lee
{"title":"二维金属 2H-NbSe2 中的电输运现象:实验与理论研究","authors":"Jeongmin Kim, Seonhye Youn, Damin Lee, Chan Woong Kim, Hongjae Moon, Seok-Hwan Chung, Hoyoung Kim, Dong Hwan Kim, Sumin Kim, Jong Wook Roh, Joonho Bang, Wooyoung Lee","doi":"10.1039/d4nr03369h","DOIUrl":null,"url":null,"abstract":"Two-dimensional (2D) metallic transition metal dichalcogenides (TMDCs) have attracted extensive interest in various fields owing to their unique electronic properties. However, studies on their transport properties and the modulation of these properties based on their band structure are limited. Herein, we studied the transport phenomena in 2D metallic 2H-NbSe<small><sub>2</sub></small> using experimental and theoretical approaches. The transport properties, including electrical conductivity (<em>σ</em>) and Seebeck coefficient (<em>S</em>), of mechanically exfoliated 2H-NbSe<small><sub>2</sub></small> nanosheets were measured. We observed field effect-dependent variations in <em>σ</em> and <em>S</em> of the 2H-NbSe<small><sub>2</sub></small> nanosheets. Theoretical calculations of the electronic band structures and estimations of the transport properties of 2D 2H-NbSe<small><sub>2</sub></small> crystals were conducted to verify and explain the experimental results. The superconducting transition temperature of the exfoliated NbSe<small><sub>2</sub></small> nanosheets validated the reliability of the sample preparation procedures and indicated the high quality of the samples. Our findings provide a basis for understanding the electrical properties of metallic TMDCs intended for various applications.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"11 1","pages":""},"PeriodicalIF":5.8000,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Electrical transport phenomena in two-dimensional metallic 2H-NbSe2: an experimental and theoretical study\",\"authors\":\"Jeongmin Kim, Seonhye Youn, Damin Lee, Chan Woong Kim, Hongjae Moon, Seok-Hwan Chung, Hoyoung Kim, Dong Hwan Kim, Sumin Kim, Jong Wook Roh, Joonho Bang, Wooyoung Lee\",\"doi\":\"10.1039/d4nr03369h\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Two-dimensional (2D) metallic transition metal dichalcogenides (TMDCs) have attracted extensive interest in various fields owing to their unique electronic properties. However, studies on their transport properties and the modulation of these properties based on their band structure are limited. Herein, we studied the transport phenomena in 2D metallic 2H-NbSe<small><sub>2</sub></small> using experimental and theoretical approaches. The transport properties, including electrical conductivity (<em>σ</em>) and Seebeck coefficient (<em>S</em>), of mechanically exfoliated 2H-NbSe<small><sub>2</sub></small> nanosheets were measured. We observed field effect-dependent variations in <em>σ</em> and <em>S</em> of the 2H-NbSe<small><sub>2</sub></small> nanosheets. Theoretical calculations of the electronic band structures and estimations of the transport properties of 2D 2H-NbSe<small><sub>2</sub></small> crystals were conducted to verify and explain the experimental results. The superconducting transition temperature of the exfoliated NbSe<small><sub>2</sub></small> nanosheets validated the reliability of the sample preparation procedures and indicated the high quality of the samples. Our findings provide a basis for understanding the electrical properties of metallic TMDCs intended for various applications.\",\"PeriodicalId\":92,\"journal\":{\"name\":\"Nanoscale\",\"volume\":\"11 1\",\"pages\":\"\"},\"PeriodicalIF\":5.8000,\"publicationDate\":\"2024-11-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nanoscale\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1039/d4nr03369h\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nanoscale","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1039/d4nr03369h","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Electrical transport phenomena in two-dimensional metallic 2H-NbSe2: an experimental and theoretical study
Two-dimensional (2D) metallic transition metal dichalcogenides (TMDCs) have attracted extensive interest in various fields owing to their unique electronic properties. However, studies on their transport properties and the modulation of these properties based on their band structure are limited. Herein, we studied the transport phenomena in 2D metallic 2H-NbSe2 using experimental and theoretical approaches. The transport properties, including electrical conductivity (σ) and Seebeck coefficient (S), of mechanically exfoliated 2H-NbSe2 nanosheets were measured. We observed field effect-dependent variations in σ and S of the 2H-NbSe2 nanosheets. Theoretical calculations of the electronic band structures and estimations of the transport properties of 2D 2H-NbSe2 crystals were conducted to verify and explain the experimental results. The superconducting transition temperature of the exfoliated NbSe2 nanosheets validated the reliability of the sample preparation procedures and indicated the high quality of the samples. Our findings provide a basis for understanding the electrical properties of metallic TMDCs intended for various applications.
期刊介绍:
Nanoscale is a high-impact international journal, publishing high-quality research across nanoscience and nanotechnology. Nanoscale publishes a full mix of research articles on experimental and theoretical work, including reviews, communications, and full papers.Highly interdisciplinary, this journal appeals to scientists, researchers and professionals interested in nanoscience and nanotechnology, quantum materials and quantum technology, including the areas of physics, chemistry, biology, medicine, materials, energy/environment, information technology, detection science, healthcare and drug discovery, and electronics.