Transport Spectroscopy of Confined Fractional Quantum Hall Systems
This book provides an overview of recent developments in experiments probing the fractional quantum Hall (FQH) states of the second Landau level, especially the \nu=5/2 state. It summarizes the state-of-the-art understanding of these FQH states. It furthe
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Stephan Baer Klaus Ensslin
Transport Spectroscopy of Confined Fractional Quantum Hall Systems
Springer Series in Solid-State Sciences Volume 183
Series editors Bernhard Keimer, Stuttgart, Germany Roberto Merlin, Ann Arbor, MI, USA Hans-Joachim Queisser, Stuttgart, Germany Klaus von Klitzing, Stuttgart, Germany
The Springer Series in Solid-State Sciences consists of fundamental scientific books prepared by leading researchers in the field. They strive to communicate, in a systematic and comprehensive way, the basic principles as well as new developments in theoretical and experimental solid-state physics.
More information about this series at http://www.springer.com/series/682
Stephan Baer Klaus Ensslin •
Transport Spectroscopy of Confined Fractional Quantum Hall Systems
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Stephan Baer Solid State Physics Laboratory ETH Zürich Zürich Switzerland
Klaus Ensslin Solid State Physics Laboratory ETH Zürich Zürich Switzerland
ISSN 0171-1873 ISSN 2197-4179 (electronic) Springer Series in Solid-State Sciences ISBN 978-3-319-21050-6 ISBN 978-3-319-21051-3 (eBook) DOI 10.1007/978-3-319-21051-3 Library of Congress Control Number: 2015944176 Springer Cham Heidelberg New York Dordrecht London © Springer International Publishing Switzerland 2015 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, express or implied, with respect to the material contained herein or for any errors or omissions that may have been made. Printed on acid-free paper Springer International Publishing AG Switzerland is part of Springer Science+Business Media (www.springer.com)
Preface
At very low temperatures and at certain filling factors ν, the ground state of a high mobility electron gas exposed to a strong magnetic field becomes incompressible, forming an integer quantum Hall (IQH) or fractional quantum Hall (FQH) state. The ν ¼ 5=2 state is one of the most exceptional of these states, as it is believed to exhibit non-Abelian quasiparticle excitations. This property makes it not only interesting from a fundamental physics point of view, but also for possible applications in topological quantum computing. In this book, we in
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