engleski

On the phonon Poiseuille flow in quasi-one dimensional crystal

We report on thermal conductivity measurements of the quasi-one dimensional single crystals (Ta1-xNbxSe4)2I (x=0, 0.008, 0.01) at low temperature. In the vicinity of 1K and 2K for pure and 1at.% Nb doped samples, thermal conductivity shows a very sharp peak. The presence of the peak in these systems is explained by a phonon Poiseuille flow, originating from their strong anharmonicity, amplified by the lattice anisotropy.

quasi-one dimensional compound; heat conduction; phonon Poiseuille flow

Rad je kao pozvano predavanje prezentiran na skupu Phonons 98 : Phonon Scattering in Condensed Matter, održanom od 26.-31.07.1998., Lancaster, Velika Britanija ; objavljen u Knjizi sažetaka / Wigmore, K. (ur.) ; Lancaster : Lancaster University, Scool of Physics and Chemistry, 1998. ; str. 55-55.