Direct measurements of fractional quantum Hall effect gaps
We measure the chemical potential jump across the fractional gap in the low-temperature limit in the two-dimensional electron system of GaAs/AlGaAs single heterojunctions. In the fully spin-polarized regime, the gap for filling factor nu=1/3 increases linearly with the magnetic field and is coincide...
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| Veröffentlicht in: | Physical review letters 2007-08, Vol.99 (8), p.086802-086802, Article 086802 |
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| container_end_page | 086802 |
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| container_title | Physical review letters |
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| creator | Khrapai, V S Shashkin, A A Trokina, M G Dolgopolov, V T Pellegrini, V Beltram, F Biasiol, G Sorba, L |
| description | We measure the chemical potential jump across the fractional gap in the low-temperature limit in the two-dimensional electron system of GaAs/AlGaAs single heterojunctions. In the fully spin-polarized regime, the gap for filling factor nu=1/3 increases linearly with the magnetic field and is coincident with that for nu=2/3, reflecting the electron-hole symmetry in the spin-split Landau level. In low magnetic fields, at the ground-state spin transition for nu=2/3, a correlated behavior of the nu=1/3 and nu=2/3 gaps is observed. |
| doi_str_mv | 10.1103/physrevlett.99.086802 |
| format | Article |
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In low magnetic fields, at the ground-state spin transition for nu=2/3, a correlated behavior of the nu=1/3 and nu=2/3 gaps is observed.</description><identifier>ISSN: 0031-9007</identifier><identifier>EISSN: 1079-7114</identifier><identifier>DOI: 10.1103/physrevlett.99.086802</identifier><identifier>PMID: 17930970</identifier><language>eng</language><publisher>United States</publisher><subject>Cold Temperature ; Electrons ; Magnetic Fields ; Quantum Theory</subject><ispartof>Physical review letters, 2007-08, Vol.99 (8), p.086802-086802, Article 086802</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c421t-16cd065ed77a3b86ce84b9fdfd73a351bb21293156f1e9c5292c284c0a1bfadc3</citedby><cites>FETCH-LOGICAL-c421t-16cd065ed77a3b86ce84b9fdfd73a351bb21293156f1e9c5292c284c0a1bfadc3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,777,781,2863,2864,27905,27906</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/17930970$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Khrapai, V S</creatorcontrib><creatorcontrib>Shashkin, A A</creatorcontrib><creatorcontrib>Trokina, M G</creatorcontrib><creatorcontrib>Dolgopolov, V T</creatorcontrib><creatorcontrib>Pellegrini, V</creatorcontrib><creatorcontrib>Beltram, F</creatorcontrib><creatorcontrib>Biasiol, G</creatorcontrib><creatorcontrib>Sorba, L</creatorcontrib><title>Direct measurements of fractional quantum Hall effect gaps</title><title>Physical review letters</title><addtitle>Phys Rev Lett</addtitle><description>We measure the chemical potential jump across the fractional gap in the low-temperature limit in the two-dimensional electron system of GaAs/AlGaAs single heterojunctions. 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| ispartof | Physical review letters, 2007-08, Vol.99 (8), p.086802-086802, Article 086802 |
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| language | eng |
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| source | MEDLINE; American Physical Society Journals |
| subjects | Cold Temperature Electrons Magnetic Fields Quantum Theory |
| title | Direct measurements of fractional quantum Hall effect gaps |
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