منابع مشابه
Finite thermal conductivity in 1D lattices
We discuss the thermal conductivity of a chain of coupled rotators, showing that it is the first example of a 1D nonlinear lattice exhibiting normal transport properties in the absence of an on-site potential. Numerical estimates obtained by simulating a chain in contact with two thermal baths at different temperatures are found to be consistent with those based on linear response theory. The d...
متن کاملTemperature dependence of thermal conductivity in 1D nonlinear lattices
We examine the temperature dependence of thermal conductivity of one dimensional nonlinear (anharmonic) lattices with and without on-site potential. It is found from computer simulation that the heat conductivity depends on temperature via the strength of nonlinearity. Based on this correlation, we make a conjecture in the effective phonon theory that the meanfree-path of the effective phonon i...
متن کاملStudies of thermal conductivity in FPU-like lattices
Stefano Lepri, 2, 3, ∗ Roberto Livi, 3 and Antonio Politi 2, 3 Istituto Nazionale di Ottica Applicata, largo E. Fermi 6 I-50125 Firenze, Italy Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche, Sez. Territoriale di Firenze, largo E. Fermi 6 I-50125 Firenze, Italy Istituto Nazionale per la Fisica della Materia-UdR Firenze, via G. Sansone 1 I-50019 Sesto Fiorentino, Italy Diparti...
متن کاملStudies of thermal conductivity in Fermi-Pasta-Ulam-like lattices.
The pioneering computer simulations of the energy relaxation mechanisms performed by Fermi, Pasta, and Ulam (FPU) can be considered as the first attempt of understanding energy relaxation and thus heat conduction in lattices of nonlinear oscillators. In this paper we describe the most recent achievements about the divergence of heat conductivity with the system size in one-dimensional (1D) and ...
متن کاملEffect of finite heater thickness on 3ω thermal conductivity measurements
The 3ω method is popular for thermal conductivity measurements. It consists of a strip heater above a substrate, and the results are usually based on approximate solutions of the heat conduction equation for simplified heating in which the heater is assumed to be a thin plate. Through numerical studies, it is found that a finite heater thickness has an effect on the value of the thermal conduct...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2000
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.84.2144