Polarized positrons as spin detectors for paramagnetic centres in solids

U. Lauff, J. Major, A. Seeger, H. Stoll, A. Siegle, Ch Deckers, H. Greif, K. Maier, M. Tongbhoyai

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A novel technique for studying paramagnetic defects in insulators or semiconductors acting as positron traps is presented. The spin polarization of the paramagnetic electrons of such centres can be determined by investigating the annihilation of spin-polarized positrons, e.g., by Doppler-broadening or positron-lifetime measurements. The viability of this technique is demonstrated by measuring the temperature dependence of the polarization of the paramagnetic electrons in F-centres in KCl in high magnetic fields (±4.5T).

Original languageEnglish
Pages (from-to)165-168
Number of pages4
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume182
Issue number1
DOIs
Publication statusPublished - Nov 8 1993

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positrons
detectors
polarization
color centers
viability
electrons
insulators
traps
life (durability)
temperature dependence
defects
magnetic fields

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Polarized positrons as spin detectors for paramagnetic centres in solids. / Lauff, U.; Major, J.; Seeger, A.; Stoll, H.; Siegle, A.; Deckers, Ch; Greif, H.; Maier, K.; Tongbhoyai, M.

In: Physics Letters, Section A: General, Atomic and Solid State Physics, Vol. 182, No. 1, 08.11.1993, p. 165-168.

Research output: Contribution to journalArticle

Lauff, U, Major, J, Seeger, A, Stoll, H, Siegle, A, Deckers, C, Greif, H, Maier, K & Tongbhoyai, M 1993, 'Polarized positrons as spin detectors for paramagnetic centres in solids', Physics Letters, Section A: General, Atomic and Solid State Physics, vol. 182, no. 1, pp. 165-168. https://doi.org/10.1016/0375-9601(93)90073-9
Lauff, U. ; Major, J. ; Seeger, A. ; Stoll, H. ; Siegle, A. ; Deckers, Ch ; Greif, H. ; Maier, K. ; Tongbhoyai, M. / Polarized positrons as spin detectors for paramagnetic centres in solids. In: Physics Letters, Section A: General, Atomic and Solid State Physics. 1993 ; Vol. 182, No. 1. pp. 165-168.
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