F. Bartels, J. Strobel, B. Horn-Cosfeld, M. Cerchez, K. Pierz, H. W. Schumacher, D. Mailly, T. Heinzel
{"title":"设计随机障碍物阵列的霍尔场诱导电阻振荡","authors":"F. Bartels, J. Strobel, B. Horn-Cosfeld, M. Cerchez, K. Pierz, H. W. Schumacher, D. Mailly, T. Heinzel","doi":"10.1103/physrevb.111.165301","DOIUrl":null,"url":null,"abstract":"Hall field induced resistance oscillations (HIROs) are studied in two-dimensional electron gases with resistivities dominated by scattering at identical but randomly distributed circular obstacles with hard walls. For sufficiently high number densities, these obstacles dominate the HIROs, even though they remain sparse in comparison to the intrinsic scatterers. With increasing obstacle density, we observe a monotonous increase of the HIRO period up to a factor of 2. The results are interpreted in terms of a substantial localization of the Hall field around the designed obstacles, providing an alternative explanation for the HIRO scaling factor γ</a:mi></a:math> in pristine two-dimensional electron gases in terms of spatially varying Hall fields. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"58 1","pages":""},"PeriodicalIF":3.7000,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Hall field induced resistance oscillations by designed random obstacle arrays\",\"authors\":\"F. Bartels, J. Strobel, B. Horn-Cosfeld, M. Cerchez, K. Pierz, H. W. Schumacher, D. Mailly, T. Heinzel\",\"doi\":\"10.1103/physrevb.111.165301\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Hall field induced resistance oscillations (HIROs) are studied in two-dimensional electron gases with resistivities dominated by scattering at identical but randomly distributed circular obstacles with hard walls. For sufficiently high number densities, these obstacles dominate the HIROs, even though they remain sparse in comparison to the intrinsic scatterers. With increasing obstacle density, we observe a monotonous increase of the HIRO period up to a factor of 2. The results are interpreted in terms of a substantial localization of the Hall field around the designed obstacles, providing an alternative explanation for the HIRO scaling factor γ</a:mi></a:math> in pristine two-dimensional electron gases in terms of spatially varying Hall fields. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>\",\"PeriodicalId\":20082,\"journal\":{\"name\":\"Physical Review B\",\"volume\":\"58 1\",\"pages\":\"\"},\"PeriodicalIF\":3.7000,\"publicationDate\":\"2025-04-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physical Review B\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1103/physrevb.111.165301\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"Physics and Astronomy\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Review B","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1103/physrevb.111.165301","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Physics and Astronomy","Score":null,"Total":0}
Hall field induced resistance oscillations by designed random obstacle arrays
Hall field induced resistance oscillations (HIROs) are studied in two-dimensional electron gases with resistivities dominated by scattering at identical but randomly distributed circular obstacles with hard walls. For sufficiently high number densities, these obstacles dominate the HIROs, even though they remain sparse in comparison to the intrinsic scatterers. With increasing obstacle density, we observe a monotonous increase of the HIRO period up to a factor of 2. The results are interpreted in terms of a substantial localization of the Hall field around the designed obstacles, providing an alternative explanation for the HIRO scaling factor γ in pristine two-dimensional electron gases in terms of spatially varying Hall fields. Published by the American Physical Society2025
期刊介绍:
Physical Review B (PRB) is the world’s largest dedicated physics journal, publishing approximately 100 new, high-quality papers each week. The most highly cited journal in condensed matter physics, PRB provides outstanding depth and breadth of coverage, combined with unrivaled context and background for ongoing research by scientists worldwide.
PRB covers the full range of condensed matter, materials physics, and related subfields, including:
-Structure and phase transitions
-Ferroelectrics and multiferroics
-Disordered systems and alloys
-Magnetism
-Superconductivity
-Electronic structure, photonics, and metamaterials
-Semiconductors and mesoscopic systems
-Surfaces, nanoscience, and two-dimensional materials
-Topological states of matter