Emission of circularly polarized recombination radiation from p-doped GaAs and GaAs0.62P0.38 under the impact of polarized electrons

Fromme B, Baum G, Göckel D, Raith W (1989)
Phys. Rev. B 40(18): 12312-12318.

Download
OA
Zeitschriftenaufsatz | Veröffentlicht | Englisch
Volltext vorhanden für diesen Nachweis
Autor
; ; ;
Abstract / Bemerkung
Circularly polarized light is emitted in radiative transitions of polarized electrons from the conduction to the valence band in GaAs or GaAs1-xPx crystals. The degree of light polarization is directly related to the polarization of the conduction-band electrons at the instant of recombination and allows conclusions about the depolarization of electrons in the conduction band. The depolarization is caused by spin-relaxation processes. The efficiency of these processes depends on crystal type, crystal temperature, degree of doping, and kinetic energy of the electrons. Highly p-doped GaAs and GaAs0.62P0.38 crystals (NA>1×10^19 atoms/cm^3) were bombarded with polarized electrons (initial polarization 38 %), and the spectral distribution and the circular polarization of the emitted recombination radiation were measured. The initial kinetic energy of the electrons in the conduction band was varied between 5 and 1000 eV. The measurements of the spectral distribution show that the electrons are thermalized before recombination occurs, independent of their initial energy. An important thermalization process in this energy range is the excitation of crystal electrons by electron-hole pair creation. The circular polarization of the recombination radiation lies below 1% in the whole energy range. It decreases with increasing electron energy but is still of measurable magnitude at 100 eV in the case of GaAs0.62P0.38. The circular polarization is smaller for GaAs than for GaAs0.62P0.38, which we attribute to more efficient spin relaxation in GaAs.
Erscheinungsjahr
Zeitschriftentitel
Phys. Rev. B
Band
40
Ausgabe
18
Seite(n)
12312-12318
ISSN
PUB-ID

Zitieren

Fromme B, Baum G, Göckel D, Raith W. Emission of circularly polarized recombination radiation from p-doped GaAs and GaAs0.62P0.38 under the impact of polarized electrons. Phys. Rev. B. 1989;40(18):12312-12318.
Fromme, B., Baum, G., Göckel, D., & Raith, W. (1989). Emission of circularly polarized recombination radiation from p-doped GaAs and GaAs0.62P0.38 under the impact of polarized electrons. Phys. Rev. B, 40(18), 12312-12318. doi:10.1103/PhysRevB.40.12312
Fromme, B., Baum, G., Göckel, D., and Raith, W. (1989). Emission of circularly polarized recombination radiation from p-doped GaAs and GaAs0.62P0.38 under the impact of polarized electrons. Phys. Rev. B 40, 12312-12318.
Fromme, B., et al., 1989. Emission of circularly polarized recombination radiation from p-doped GaAs and GaAs0.62P0.38 under the impact of polarized electrons. Phys. Rev. B, 40(18), p 12312-12318.
B. Fromme, et al., “Emission of circularly polarized recombination radiation from p-doped GaAs and GaAs0.62P0.38 under the impact of polarized electrons”, Phys. Rev. B, vol. 40, 1989, pp. 12312-12318.
Fromme, B., Baum, G., Göckel, D., Raith, W.: Emission of circularly polarized recombination radiation from p-doped GaAs and GaAs0.62P0.38 under the impact of polarized electrons. Phys. Rev. B. 40, 12312-12318 (1989).
Fromme, Bärbel, Baum, Günter, Göckel, Dorothee, and Raith, Wilhelm. “Emission of circularly polarized recombination radiation from p-doped GaAs and GaAs0.62P0.38 under the impact of polarized electrons”. Phys. Rev. B 40.18 (1989): 12312-12318.
Alle Dateien verfügbar unter der/den folgenden Lizenz(en):
Copyright Statement:
This Item is protected by copyright and/or related rights. [...]
Volltext(e)
Access Level
OA Open Access
Zuletzt Hochgeladen
1970-01-01T00:00:00Z

2 Zitationen in Europe PMC

Daten bereitgestellt von Europe PubMed Central.

Observation of spin-polarized-electron tunneling from a ferromagnet into GaAs.
Alvarado SF, Renaud P., Phys Rev Lett 68(9), 1992
PMID: 10046153
Low-energy cathodoluminescence experiment with polarized electrons and a negative-electron-affinity GaAs target.
Göckel D, Baum G, Fromme B, Lehmann V, Lohmann B, Raith W., Phys Rev B Condens Matter 42(11), 1990
PMID: 9994854

56 References

Daten bereitgestellt von Europe PubMed Central.


Pierce, Appl. Phys. Lett. 26(), 1975

Pierce, Phys. Rev. B 13(), 1976

Conrath, Appl. Phys. 20(), 1979

Pierce, Rev. Sci. Instrum. 51(), 1980

Siegmann, Europhys. News 14(), 1983

Henisch, 1984

Martinelli, Proc. IEEE 62(), 1974

Spicer, Appl. Phys. 12(), 1977

Ekimov, JETP Lett. 13(), 1971

Parsons, Phys. Rev. Lett. 23(), 1969

Parsons, Can. J. Phys. 49(), 1971

Fishman, Phys. Rev. B 16(), 1977

Thompson, Phys. Rev. 146(), 1966

Blakemore, J. Appl. Phys. 53(), 1982

D'Yakonov, Sov. Phys.—JETP 33(), 1971

Pendry, Phys. Rev. Lett. 45(), 1980

Pendry, J. Phys. C 14(), 1981

Woodruff, Phys. Rev. Lett. 48(), 1982

Unguris, Phys. Rev. Lett. 49(), 1982

Scheidt, Phys. Rev. Lett. 51(), 1983

Kirschner, Phys. Rev. Lett. 53(), 1984

Fromme, Phys. Lett. A 118(), 1986

Thurmond, J. Electrochem. Soc. 122(), 1975

Herzog, J. Appl. Phys. 40(), 1969

Dean, J. Appl. Phys. 38(), 1967
Photoemission from activated gallium arsenide. I. Very-high-resolution energy distribution curves.
Drouhin H, Hermann C, Lampel G., Phys. Rev., B Condens. Matter 31(6), 1985
PMID: 9936284

D'Yakonov, Sov. Phys.—Semicond. 11(), 1977

Kirschner, Appl. Phys. A 30(), 1983

Massies, J. Vac. Sci. Technol. 16(), 1979

D'Yakonov, 1984

Pikus, 1984

Aronov, Sov. Phys—JETP 57(), 1983
Photoemission from activated gallium arsenide. II. Spin polarization versus kinetic energy analysis.
Drouhin H, Hermann C, Lampel G., Phys. Rev., B Condens. Matter 31(6), 1985
PMID: 9936285

D'Yakonov, Sov. Phys.—Solid State 13(), 1972

Marushchak, Sov. Phys.—Solid State 25(), 1983

Craford, Phys. Rev. 168(), 1968

Sinclair, 1977

Pierce, Rev. Sci. Instrum. 52(), 1981

Celotta, Appl. Phys. Lett. 38(), 1981

Varshni, Physica 34(), 1967

Craford, J. Appl. Phys. 43(), 1972

Nelson, Phys. Rev. B 13(), 1976

Aspnes, Phys. Rev. B 14(), 1976

Pankove, Phys. Rev. 140(), 1965

Pankove, 1971

Casey,, J. Appl. Phys. 47(), 1976

Olego, Phys. Rev. B 22(), 1980

Titkov, Sov. Phys.—Semicond. 15(), 1981

Cusano, Solid State Commun. 2(), 1964

Nathan, Appl Phys. Lett. 1(), 1962

Zakharchenya, JETP Lett. 13(), 1971

Larsen, Appl. Phys. Lett. 3(), 1963

Cusano, Appl. Phys. Lett. 5(), 1964

Pilkuhn, J. Appl. Phys. 36(), 1965

Gershenzon, Solid-State Electron. 5(), 1962

Garbuzov, JETP Lett. 13(), 1971

Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®

Quellen

PMID: 9991863
PubMed | Europe PMC

Suchen in

Google Scholar