Time-Resolved ODMR Study of the Type II Relaxed Excition in KBr:I

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概要

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• The lowest triplet state of' the type II relaxed exciton associated with a 'tuest iodine nuono?aaerin KBr:I has been investigated at 3.7 K by a titaae-resolx'ed optically detected tnagnetic reso-nance (0DllvIR) teclatuiqtre trsing a cottabinatiota of pttlsed uaaicroxvave and ArF laser ptnlses for theunagruetic field H 7 [110]. FISR spectra shoxv botla fine strtrctture and p?trtiatlly resolved layperfinestrttctures of 21 Vy core (IBr) . The zero-field splitting is deterznined to be D = 1l.29kG andtlae hyperfine constants are estirtaated to be A'j :::: 262 G and A":' : 302 G. These hyperfineconstants, xvhich are taatrch greater than l /2 of' tluose of tlue correspondiuag hetero-ntmclear V'Kcenter, reveal large overlap of tlae electrott on tlae Vg( core, especially 011 the bronuitae ntrcletrs.Tlais strggests that the bro?aaine anion shifts toxvard the iodine anion and the electron is botnradto the restrlting half-v?tcatacy. Tinae evolution of ODIN?IR spectra and taaagnetic field depetudenceof the truplet luf'etunaes are also explained throtrgh the hyperfitte interarctions.

• 社団法人日本物理学会の論文
• 1998-06-15

著者

• SHIRAI Masanobu

  Department of Physics, Kyoto University

• Shirai Masanobu

  Department Of Physics Faculty Of Science Kyoto University

関連論文

• Luminescence Channels of Manganese-Doped MgGa_2O_4(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
• Time-Resolved Spectroscopic Study on the Type I Self-Trapped Excitons in Alkali Halide Crystals : II. Excitation Spectra and Relaxation Processes
• Correlation between the Spin State and Structure of Self-Trapped Excitons in Alkali Halides
• Time-Resolved ODMR Study of the Type II Relaxed Excition in KBr:I
• Luminescence Channels of Manganese-Doped MgGa_2O_4(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)

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