Response of incompressible fractional quantum Hall states to magnetic\n and non-magnetic impurities

2007/03/04 by Karel Výborný, Christian Müller, Výborný, Karel +3 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #Magnetic properties of thin films #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.mes-hall

paper · pdf · doi:10.48550/arxiv.cond-mat/0703109

6 pages, 9 figures, submitted to PRB

openalex publication_date 2007/03/04 · arxiv created 2007/03/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04

Abstract

Using exact diagonalization we examine the response of several most prominent\nfractional quantum Hall states to a single local impurity. The 2/3 singlet\nstate is found to be more inert than the polarized one in spite of its smaller\nincompressibility gap. Based on its spin-spin correlation functions we\ninterpret it as a liquid of electron pairs with opposite spin. A comparison of\ndifferent types of impurities, non-magnetic and magnetic, is presented.\n

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