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Titolo:
Metallic phase in quantum Hall systems due to inter-Landau-band mixing - art. no. 216802
Autore:
Xiong, G; Wang, SD; Niu, Q; Tian, DC; Wang, XR;
Indirizzi:
Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China Hong Kong Univ Sci & Technol Hong Kong Hong Kong Peoples R China R China Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China Wuhan Univ Wuhan Peoples R China 430072 s, Wuhan 430072, Peoples R China Univ Texas, Dept Phys, Austin, TX 78712 USA Univ Texas Austin TX USA 78712 niv Texas, Dept Phys, Austin, TX 78712 USA
Titolo Testata:
PHYSICAL REVIEW LETTERS
fascicolo: 21, volume: 8721, anno: 2001,
pagine: 6802 -
SICI:
0031-9007(20011119)8721:21<6802:MPIQHS>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
RANDOM MAGNETIC-FIELD; INSULATOR-TRANSITION; ELECTRON; LOCALIZATION; UNIVERSALITY; DIAGRAM; STATES; DELOCALIZATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Xiong, G Hong Kong Univ Sci & Technol, Dept Phys, Clear Water Bay, Hong Kong, Hong Kong, Peoples R China Hong Kong Univ Sci & Technol Clear Water BayHong Kong Hong Kong Peoples R China
Citazione:
G. Xiong et al., "Metallic phase in quantum Hall systems due to inter-Landau-band mixing - art. no. 216802", PHYS REV L, 8721(21), 2001, pp. 6802

Abstract

The electronic eigenstates of a quantum Hall (QH) system are chiral states. Strong inter-Landau-band mixings among these states can occur when the bandwidth is comparable to the spacing of two adjacent Landau bands. We show that mixing of localized states with opposite chirality can delocalize electronic states. Based on numerical results, we propose the existence of a metallic phase between two adjacent QH phases and between a QH phase and the insulating phase. This result is consistent with nonscaling behaviors observed in recent experiments on a quantum Hall liquid-to-insulator transition.

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Documento generato il 25/11/20 alle ore 00:56:56