Optically detected magnetic-resonance observation of the isolated zinc interstitial in irradiated ZnSe

F. Rong; G. D. Watkins

doi:10.1103/PhysRevLett.58.1486

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Optically detected magnetic-resonance observation of the isolated zinc interstitial in irradiated ZnSe

F. Rong and G. D. Watkins

Department of Physics, Sherman Fairchild Laboratory, Lehigh University, Bethlehem, Pennsylvania 18015

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Phys. Rev. Lett. 58, 1486 – Published 6 April, 1987

DOI: https://doi.org/10.1103/PhysRevLett.58.1486

Abstract

Optical detection of magnetic resonance is reported for isolated interstitial ${Zr}_{1}^{+}$ in ZnSe produced by 2.5-MeV electron irradiation at 4.2 K. It is detected as a reduction of the distant-donor–to–Frenkel-pair recombination luminescence at 625 nm. Resolved hyperfine interaction with the central zinc ion and two shells of Se neighbors reveals a highly localized ‘‘deep’’ state for the paramagnetic electron. It is stable only to ∼220 K.

References (15)

G. D. Watkins, Phys. Rev. Lett. 33, 223 (1974).
G. D. Watkins, Phys. Rev. 12, 5824 (1975).
G. D. Watkins and K. L. Brower, Phys. Rev. Lett. 36, 1329 (1976).
K. P. O'Donnell, K. M. Lee and G. D. Watkins, Physica (Amsterdam) 116B, 258 (1983).
F. Rong and G. D. Watkins, Phys. Rev. Lett. 56, 2310 (1986).
F. Rong and G. D. Watkins, Materials Science Forum 12, 827 (1986).
T. A. Kennedy and M. G. Spencer, Phys. Rev. Lett. 57, 2690 (1986).
K. M. Lee, to be published.
G. D. Watkins, Air Force Research Laboratory Technical Report No. ARL TR75-0011, 1975 (unpublished), available from the National Technical Service Clearinghouse, Springfield, VA 22151.
J. Schneider, B. Dischler and A. Rauber, J. Phys. Chem. Solids 29, 451 (1968).
The computer-stored spectrum was first Gaussian smoothed (standard deviation σ = 0.1 G), then the second derivative was taken, and the resultant curve was again Gaussian smoothed ( σ = 0.8 G).
A very good fit to the line shape can be made with a Lorentzian shape function centered at each of the hyperfine satellite positions. From this fit, which reflects primarily the amplitude ratios of the central three components, the number of equivalent sites can be determined to be 12 +- 2 .
There is an alternative available $T_{d}$ site surrounded by four zinc atoms. The spectrum labeled X in Figs. 2(a) and 2(b) is a good candidate for ${Zn}_{i}$ in this site, its resolved satellite structure appearing consistent with six " $"^{77}$ Se nuclei of the next-nearest shell.
A. K. Koh and D. J. Miller, At. Data Nucl. Data Tables 33, 235 (1985).
F. Rong and G. D. Watkins, to be published.

[c1] G. D. Watkins, Phys. Rev. Lett. 33, 223 (1974).

[c2] G. D. Watkins, Phys. Rev. 12, 5824 (1975).

[c3] G. D. Watkins and K. L. Brower, Phys. Rev. Lett. 36, 1329 (1976).

[c4] K. P. O'Donnell, K. M. Lee and G. D. Watkins, Physica (Amsterdam) 116B, 258 (1983).

[c5] F. Rong and G. D. Watkins, Phys. Rev. Lett. 56, 2310 (1986).

[c6] F. Rong and G. D. Watkins, Materials Science Forum 12, 827 (1986).

[c7] T. A. Kennedy and M. G. Spencer, Phys. Rev. Lett. 57, 2690 (1986).

[c8] K. M. Lee, to be published.

[c9] G. D. Watkins, Air Force Research Laboratory Technical Report No. ARL TR75-0011, 1975 (unpublished), available from the National Technical Service Clearinghouse, Springfield, VA 22151.

[c10] J. Schneider, B. Dischler and A. Rauber, J. Phys. Chem. Solids 29, 451 (1968).

[c11] The computer-stored spectrum was first Gaussian smoothed (standard deviation σ = 0.1 G), then the second derivative was taken, and the resultant curve was again Gaussian smoothed ( σ = 0.8 G).

[c12] A very good fit to the line shape can be made with a Lorentzian shape function centered at each of the hyperfine satellite positions. From this fit, which reflects primarily the amplitude ratios of the central three components, the number of equivalent sites can be determined to be 12 +- 2 .

[c13] There is an alternative available $T_{d}$ site surrounded by four zinc atoms. The spectrum labeled X in Figs. 2(a) and 2(b) is a good candidate for ${Zn}_{i}$ in this site, its resolved satellite structure appearing consistent with six " $"^{77}$ Se nuclei of the next-nearest shell.

[c14] A. K. Koh and D. J. Miller, At. Data Nucl. Data Tables 33, 235 (1985).

[c15] F. Rong and G. D. Watkins, to be published.

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Optically detected magnetic-resonance observation of the isolated zinc interstitial in irradiated ZnSe

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