Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Spin relaxation of charged centers in silicon in the presence of photocarriers (Si : Cr+, [Cr+-B-])
Autore:
Konchits, AA; Shanina, BD;
Indirizzi:
Natl Acad Sci Ukraine, Inst Semicond Phys, UA-03028 Kiev, Ukraine Natl Acad Sci Ukraine Kiev Ukraine UA-03028 Phys, UA-03028 Kiev, Ukraine
Titolo Testata:
PHYSICS OF THE SOLID STATE
fascicolo: 4, volume: 43, anno: 2001,
pagine: 635 - 639
SICI:
1063-7834(200104)43:4<635:SROCCI>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Konchits, AA Natl Acad Sci Ukraine, Inst Semicond Phys, UA-03028 Kiev, Ukraine Natl Acad Sci Ukraine Kiev Ukraine UA-03028 8 Kiev, Ukraine
Citazione:
A.A. Konchits e B.D. Shanina, "Spin relaxation of charged centers in silicon in the presence of photocarriers (Si : Cr+, [Cr+-B-])", PHYS SOL ST, 43(4), 2001, pp. 635-639

Abstract

Spin relaxation of deep charged centers Cr+ and of donor-acceptor pairs (Cr+-B-)(0) in silicon is studied by nonstationary EPR spectroscopy at liquid-helium temperatures. We observed the effect of an increase in the spin-lattice relaxation rate under band-to-band sample illumination; the magnitude of the effect is proportional to the photoelectron concentration. The spin-dependent carrier trapping is shown to play a dominant role in spin relaxation under illumination for centers of both types. Coupled rate equations describing the interaction of various subsystems with one another and with the bath are solved. A comparison of experimental data with theory yielded the electron trapping cross sections sigma (r)(Cr+) congruent to 4.9 x 10(-12) cm(2) and sigma (r)(Cr+-B-) congruent to 1.6 x 10(-12) cm(2) at T = 4.2 K. The results obtained are discussed in terms of the theory of trapping by attractive centers. (C) 2001 MAIK "Nauka/Interperiodica".

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/10/20 alle ore 01:22:32