Abstract
A theoretical study is made of the thermal resistance of a paramagnetic spin system strongly coupled to the phonons of the lattice. Near the resonant frequency of the two systems dispersion occurs. Comparison with the work of Orbach on the thermal resistance of a non-Kramers salt suggests that in a strongly coupled material this dispersion will cause an increase in the height of the peak of the magnetic-field-dependent thermal resistance. An estimate of the effect to be expected in praseodymium double nitrate is made. It is found that the thermal resistance is increased by about thirteen per cent in the vicinity of its maximum above that given by Orbach's theory which neglects dispersion. The effect of boundary scattering is also considered.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
