Ming L. Yu
Physical Review B
Mobility measurements of alkali-earth ions Be+, Mg+, Ca+, Sr+ and Ba+ in the temperature range 1.27 to 1.66 K are presented. The mobility of Be+ shows a different behavior in comparison to that of Mg+, although the properties of the two elements are similar. This may suggest that Be+ forms an alternate structure, perhaps a snowball, compared to the bubble like defect of Mg+.
Ming L. Yu
Physical Review B
A. Gupta, R. Gross, et al.
SPIE Advances in Semiconductors and Superconductors 1990
Arvind Kumar, Jeffrey J. Welser, et al.
MRS Spring 2000
Mark W. Dowley
Solid State Communications