玻璃中两能级隧道态耦合态及其对低频声吸收的影响

TLS COUPLING STATE AND ITS EFFECT ON THE LOW FREQUENCY SOUND ABSORPTION IN GLASSES

讨论了在声子作用下，两能级隧道态耦合态激发和退激发规律。

The occurrence of transitions between two tunneling states of two level systems(TLS) in glasses is attributed to the coupling to a phonon field. The coupling makes TLS form new “polar coupling states”, we call them as TLS phonon coupling states. The behaviour of the excitation and de excitation of TLS coupling states via the interaction with phonon is presented to explain the experimental characteristics of the low frequency sound absorption in glasses at low temperatures.