Temperonic Crystal: A Superlattice for Temperature Waves in Graphene

被引：29
|
作者：
Gandolfi, Marco [1 ,2 ]
Giannetti, Claudio [3 ,4 ]
Banfi, Francesco [5 ]
机构：
[1] CNR INO Natl Inst Opt, Via Branze 45, I-25123 Brescia, Italy
[2] Univ Brescia, Dept Informat Engn, Via Branze 38, I-25023 Brescia, Italy
[3] Univ Cattolica Sacro Cuore, Dept Phys, Via Musei 41, I-25121 Brescia, Italy
[4] Univ Cattolica Sacro Cuore, Interdisciplinary Labs Adv Mat Phys I LAMP, Via Musei 41, I-25121 Brescia, Italy
[5] Univ Claude Bernard Lyon 1, Inst Lumiere Matiere, CNRS, FemtoNanoOpt Grp,Univ Lyon, F-69622 Villeurbanne, France
来源：
PHYSICAL REVIEW LETTERS | 2020年 / 125卷 / 26期
关键词：
HEAT-CONDUCTION; THERMAL-CONDUCTIVITY; PHONON TRANSPORT; METAMATERIALS; FUNDAMENTALS; GRAPHITE; BEHAVIOR;
D O I：
10.1103/PhysRevLett.125.265901
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The temperonic crystal, a periodic structure with a unit cell made of two slabs sustaining temperature wavelike oscillations on short timescales, is introduced. The complex-valued dispersion relation for the temperature scalar field is investigated for the case of a localized temperature pulse. The dispersion discloses frequency gaps, tunable upon varying the slabs' thermal properties. Results are shown for the paradigmatic case of a graphene-based temperonic crystal. The temperonic crystal extends the concept of superlattices to the realm of temperature waves, allowing for coherent control of ultrafast temperature pulses in the hydrodynamic regime at above liquid nitrogen temperatures.
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页数：5
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