Heat transport in low-dimensional materials: A review and perspective

• Heat transport is a key energetic process in materials and devices.
• The rich spectrum of imperfections in low-dimensional materials introduce fruitful phenomena.
• We focus on the roles of defects, disorder, interfaces, and the quantum-mechanical effect.
• New physics from theory and experiments is reviewed, followed by a perspective on open challenges.

Heat transport is a key energetic process in materials and devices. The reduced sample size, low dimension of the problem and the rich spectrum of material imperfections introduce fruitful phenomena at nanoscale. In this review, we summarize recent progresses in the understanding of heat transport process in low-dimensional materials, with focus on the roles of defects, disorder, interfaces, and the quantum-mechanical effect. New physics uncovered from computational simulations, experimental studies, and predictable models will be reviewed, followed by a perspective on open challenges.