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Location of the H[+/-] level: experimental limits for muonium

Authors: R.L. Lichti, K.H. Chow, S.F.J. Cox, J.M. Gil, D.L. Stripe, R.C. Vil√£o

Ref.: Physica B: Condensed Matter 376/377, 587-590 (2006)

Abstract: The defect energy levels for muonium, a light pseudo-isotope of hydrogen, are investigated to define the equivalent of the H[+/-] level which is predicted to be fixed at a universal energy. Existing results for Mu at donor and acceptor sites in silicon tentatively place Mu[+/-] approximately 0.5eV above the predicted hydrogen level. Measured donor ionization energies in other materials in which two neutral Mu centers are observed define a range for the Mu acceptor energies. We discuss possible reinterpretation of known energies and the current state of investigations to obtain these muonium acceptor levels in order to further refine a determination of the Mu[+/-] energy. (c) 2006 Elsevier B.V. All rights reserved.

DOI: 10.1016/j.physb.2005.12.148