TY - JOUR
T1 - Double negative differential thermal resistance induced by nonlinear on-site potentials
AU - Ai, Bao Quan
AU - Zhong, Wei Rong
AU - Hu, Bambi
N1 - This work was supported in part by National Natural Science Foundation of China (Grants No. 30600122, No. 11004082, and No. 10947166) and GuangDong Provincial Natural Science Foundation (Grants No. 06025073 and No. 01005249).
Publisher copyright:
© 2011 American Physical Society
PY - 2011/5/4
Y1 - 2011/5/4
N2 - We study heat conduction through one-dimensional homogeneous lattices in the presence of the nonlinear on-site potentials containing the bounded and unbounded parts, and the harmonic interaction potential. We observe the occurrence of double negative differential thermal resistance (NDTR); namely, there exist two regions of temperature difference, where the heat flux decreases as the applied temperature difference increases. The nonlinearity of the bounded part contributes to NDTR at low temperatures and NDTR at high temperatures is induced by the nonlinearity of the unbounded part. The nonlinearity of the on-site potentials is necessary to obtain NDTR for the harmonic interaction homogeneous lattices. However, for the anharmonic homogeneous lattices, NDTR even occurs in the absence of the on-site potentials, for example, the rotator model.
AB - We study heat conduction through one-dimensional homogeneous lattices in the presence of the nonlinear on-site potentials containing the bounded and unbounded parts, and the harmonic interaction potential. We observe the occurrence of double negative differential thermal resistance (NDTR); namely, there exist two regions of temperature difference, where the heat flux decreases as the applied temperature difference increases. The nonlinearity of the bounded part contributes to NDTR at low temperatures and NDTR at high temperatures is induced by the nonlinearity of the unbounded part. The nonlinearity of the on-site potentials is necessary to obtain NDTR for the harmonic interaction homogeneous lattices. However, for the anharmonic homogeneous lattices, NDTR even occurs in the absence of the on-site potentials, for example, the rotator model.
UR - http://www.scopus.com/inward/record.url?scp=79961082936&partnerID=8YFLogxK
U2 - 10.1103/PhysRevE.83.052102
DO - 10.1103/PhysRevE.83.052102
M3 - Journal article
AN - SCOPUS:79961082936
SN - 1539-3755
VL - 83
JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
IS - 5
M1 - 052102
ER -
