Heinz Schmid, Hans Biebuyck, et al.
Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
We report on the quantum-mechanical displacement form factor in quasiperiodic and random heterostructures. A one-dimensional treatment is adopted to describe the longitudinal displacement along the growth axis. Elastic properties are assumed to be homogeneous, while the inhomogeneous mass density characterizes the heterostructure. In the low-frequency limit, the peak structure can be attributed to acoustic phonons, whereas for higher frequencies the quasiperiodic and random cases differ markedly. In the quasiperiodic case and constant momentum transfer, resonances separated by gaps occur and their number depends on the resolution in the frequency domain. The random case is dominated by an acoustic resonance becoming broader with increasing frequency. © 1988 Springer-Verlag.
Heinz Schmid, Hans Biebuyck, et al.
Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
D.D. Awschalom, J.-M. Halbout
Journal of Magnetism and Magnetic Materials
Arvind Kumar, Jeffrey J. Welser, et al.
MRS Spring 2000
Frank Stem
C R C Critical Reviews in Solid State Sciences