J.A. Armstrong, N.S. Shiren
IEEE JQE
Numerical calculations of the low temperature ultrasonic attenuation due to thermal phonons have been made. The effects of various approximations are found by successively including them. It is found, for example, that the consistent inclusion of dispersion of the thermal phonons leads to increased temperature dependences at low temperatures. © 1973.
J.A. Armstrong, N.S. Shiren
IEEE JQE
M. Pomerantz
Physical Review
N.S. Shiren, W. Arnold, et al.
Physical Review Letters
N.S. Shiren
Physical Review Letters