Heat Conductivity of the Cooperative Vibronic System TmVO<sub>4</sub>

Daudin, B.; Mutscheller, W.; Wagner, M.

doi:10.1002/pssb.2221220108

Cited by 4 publications

(1 citation statement)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…and L is the Liouvillian, defined by the Hamiltonian of the system (26) and (27) shows that t h e T,aplace transform of the memory function essentially plays the role of the inverse relaxation time of the conventional theory. I n addition t o that perceptual interpretation of the memory function, this formal identity of the two expressions enables us, on the one hand, t o include other scattering processes phenomenologically and, on the other hand, t o find useful approximations for the memory functions.…”

Section: Transport Theorymentioning

confidence: 99%

Thermal conductivity of cooperative Jahn‐Teller E‐systems

Mutscheller

Wagner

1986

Physica Status Solidi (b)

Self Cite

View full text Add to dashboard Cite

The thermal conductivity of the cooperative vibronic system TmVO, is investigated theoretically. Relaxation times are derived by means of a Mori-Zwanzig formalism. I n the calculation it is shown that the surviving phonon-pseudo-magnon scattering processes obeying the Ising cooperativity in the pseudo-magnon system fully account for the anomalous behaviour of thermal conductivity in the region 0.5 Tc < T < T,.Die Warmeleitfahigkeit des kooperativen vibronischen Systems TmVO, wird theoretisch untersucht. Relaxationszeiten werden mittels des Mori-Zwanzig-Formalismus hergeleitet. In der Rechnung wird gezeigt, da13 die uberlebenden Phonon-Pseudomagnon-Streuprozesse, welche der Ising-Kooperativitat gehorchen, das anomale Verhalten der Warmeleitfahigkeit im Gebiet 0,5Tc < T < T , vollstandig erklaren.

show abstract

Section: Transport Theorymentioning

confidence: 99%