Kondo interaction of quantum spin Hall edge channels with charge puddles
Source abstract
Abstract
Since the first observation of the quantum spin Hall effect, it is known that the helical edge channel conductance exhibits fluctuations around the quantized value, in contrast to the (integer) quantum Hall effect. Here, the authors show, in a mechanistic study, that these fluctuations originate from spin-flip scattering mediated by charge puddles via a Kondo-type interaction, an effect which is expected to occur in any narrow-gap quantum spin Hall insulator.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Quantum and electron transport phenomena · Topological Materials and Phenomena · Graphene research and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Physikalisches Institut (EP3), Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
Institute for Topological Insulators, Am Hubland, 97074 Würzburg, Germany
Department of Condensed Matter and Material Physics, S. N. Bose National Centre for Basic Sciences, Kolkata 700106, India
Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907, USA
Funding
Deutsche Forschungsgemeinschaft · U.S. Department of Energy
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Show source-provided references
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