Abstract
Variable-magnetic-field Hall measurements (0 to 1.5 T) are performed on very-narrow-gap bulk-grown Hg1−xCdxTe single crystals (0.165 ≤ x ≤ 0.2) at various temperatures (10 to 300K). The electron densities and mobilities are obtained within the one-carrier (electrons) approximation of the reduced-con-ductivity-tensor scheme. The present data together with the selected data set reported by other workers exhibit a pronounced peak when the electron mobility is plotted against the alloy composition x-value which has been predicted to be due to the effective-mass minimum at the bandgap-crossing (Eg ≈ 0). The observed position (x ≈ 0.165), height (≈4 x 102 m2Vs), and width (≈0.01 in x) of the mobility-peak can be explained by a simple simulation involving only ionized-impurity scattering. A lower bound of the effective mass is introduced as a fitting parameter to be consistent with the finiteness of the observed electron mobility and is found to be of the order of 10−4 of the mass of a free electron.
Similar content being viewed by others
References
D. Long,Phys. Rev. 176, 923 (1968).
D. Long and J.L. Schmit,Semiconductors and Semimetals, vol. 5, ed. R.C. Willardson and A.C. Beer (Academic Press, 1970), p. 175.
R. Dornhaus and G. Nimtz,Springer Tracts in Modem Physics, Solid State Physics 98 (1983).
G.L. Hansen, J.L. Schmit and T.N. Casselman,J. Appl. Phys. 53, 7099 (1982).
A. Mauger and J. Friedel,Phys. Rev. B 12, 2412 (1975).
J.S. Kim, D.G. Sciler and W.F. Tseng,J. Appl. Phys. 73, 8324 (1993).
L.J. van der Pauw,Philips Tech. Rev. 20, 220 (1958),Philips Res. Rep. 13, 1 (1958).
J.S. Kim, D.G. Sciler, L. Colombo and M.C. Chen,Semicond. Sci. Technol. 9, 1696(1994).
G.L. Hansen and J.L. Schmit,J. Appl. Phys. 54,1639(1982).
D.G. Sciler, J.R. Lowney, C.L. Littler and M.R. Loloee,J. Vac. Sci. Technol. A 8, 1237 (1990).
J.R. Lowney, D.G. Sciler, C.L. Littler and I.T. Yoon,J. Appl. Phys. 71, 1253 (1992).
S.B. Rafol, I.K. Sou and J.P. Faurie,J. Appl. Phys. 70, 4326 (1991).
Y. Nemirovsky and E. Finkman,J. Appl. Phys. 50, 8107 (1979).
F.L. Madarasz and F. Szmulowicz,J. Appl. Phys. 58, 2770 (1985).
L.N. Korol, L.A. Bovina and V.l. Stafeev,Soviet Phys. Semicond. 11, 288 (1977).
J.S. Kim, D.G. Sciler, L. Colombo and M.C. Chen,J. Electron. Mater. 24, 1305 (1995).
J.J. Dubowski, T. Dietl, W. Szymanska and R.R. Galazka,J. Phys. Chem. Solids 42, 351 (1981).
J.R. Meyer, F.J. Bartoli and C.A. Hoffman,Proc. 7th Int. Conf. Ternary and Multinary Compounds eds. S.K. Beb and A. Zunger (Snowmass, 1986), p. 559.
H. Brooks,Phys. Rev. 77, 879 (1951),Adv. Electronics and Electron Phys. 7, 85 (1955).
E.O. Kane,J. Phys. Chem. Solids 1, 249 (1957).
M.H. Weiler,Semiconductors and Semimetals, ed. R.K. Willardson and A.C. Beer, vol. 19 (New York: Academic Press, 1981), p. 119.
J. Bajaj, S.H. Shin, G. Bostrup and D.T. Cheung,J. Vac. Sci. Technol. 21, 244 (1982).
M.C. Chen, S.G. Parker and D.F. Weirauch,J. Appl.Phys. 58, 3150 (1985).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kim, J.S., Seiler, D.G., Lancaster, R.A. et al. Electrical characterization of very-narrow-gap bulk HgCdTe single crystals by variable magnetic field hall measurements. J. Electron. Mater. 25, 1215–1220 (1996). https://doi.org/10.1007/BF02655011
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02655011