Radio-frequency μSR investigations on paramagnetic muonium centres in crystalline silicon

O. Kormann, J. Major, I. D. Reid, A. Röck, M. Schefzik, L. Schimmele, A. Seeger, D. Herlach

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Radio frequency (RF) muon-spin resonance (RFμSR) experiments on the paramagnetic muonium centres MuT (muonium located at tetrahedral sites) and MUBC (bond-centred muonium), present in crystalline silicon, were carried out at applied magnetic fields B0 up to 6 mT and a constant irradiated frequency vRF of approximately 80 MHz. In the magnetic-field dependence of the RF asymmetry aRF, i.e. the RF induced change of the muon-decay asymmetry, two resonances were observed, one corresponding to MuT, the other to MuBC. Systematic RFμSR measurements were performed on intrinsic silicon single crystals grown by the Czochralski method (oxygen concentration 2×1017 cm-3) and the float-zone method (oxygen concentration <1015 cm-3). No MuT signal has been observed in transverse field (TF) μSR, below T = 50 K in the Czochralski-grown sample whereas a MuT signal was found with RFμSR. This RFμSR result proves that the MuT species in this sample undergo dynamic processes, in which presumably oxygen is involved.

Original languageEnglish
Pages (from-to)530-533
Number of pages4
JournalPhysica B: Condensed Matter
Volume289-290
DOIs
Publication statusPublished - Aug 2000
Event8th International Conference on Muon Spin Rotation, Relaxation and Resonance (muSR'99) - Les Diablerets, Switz
Duration: Aug 30 1999Sep 3 1999

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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    Kormann, O., Major, J., Reid, I. D., Röck, A., Schefzik, M., Schimmele, L., Seeger, A., & Herlach, D. (2000). Radio-frequency μSR investigations on paramagnetic muonium centres in crystalline silicon. Physica B: Condensed Matter, 289-290, 530-533. https://doi.org/10.1016/S0921-4526(00)00244-1