Volume 94, Number 2, April 2011
|Number of page(s)||5|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||15 April 2011|
Localization of muonium atoms in KCl at low temperature
National Research Center “Kurchatov Institute” - Kurchatov Square 1, Moscow 123182, Russia
2 Department of Physics and Astronomy, University of British Columbia - Vancouver, British Columbia, Canada V6T 1Z1
3 Physik-Institut der Universität Zürich - CH-8057 Zürich, Switzerland
4 ISIS Facility, Rutherford Appleton Laboratory - Oxfordshire OX11 OQX, UK, EU
Accepted: 15 March 2011
Muonium (μ+e− or Mu) atoms have long been believed to exhibit band-like propagation at low temperatures in ionic insulators and semiconductors. However, new muon spin relaxation measurements in transverse magnetic field reveal strong localization of Mu atoms at low temperatures in the ionic insulator KCl, similar to that observed in van der Waals cryocrystals. This discrepancy with previous results challenges our understanding of muonium quantum dynamics in solids: can Mu atoms ever truly delocalize at low temperature, or is low-temperature Mu localization a universal phenomenon?
PACS: 66.35.+a – Quantum tunneling of defects / 66.30.J- – Diffusion of impurities / 76.75.+i – Muon spin rotation and relaxation
© EPLA, 2011
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.