Journal
PHYSICAL REVIEW B
Volume 89, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.89.245446
Keywords
-
Funding
- U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-FG02-12ER46893]
Ask authors/readers for more resources
Scattering scanning near-field microscopy recently provided spectroscopic access to the fundamentally distinct spatial, spectral, and coherence properties of the thermal near field. Using SiC as an example, we study its thermal surface phonon polariton (SPhP) response. In contrast to the strongly surface-confined thermal near field of localized vibrational modes, an extended exponential distance dependence is observed reflecting the spatial coherence of the SPhP thermal field. In addition, we observe pronounced spectral frustration with spectral shifts ranging from similar to 5 to similar to 50 cm(-1) that cannot be explained by conventional tip-sample dipole coupling alone. We present an alternative model describing an effective medium change by the tip. The results highlight the possibility for local spectral and spatial tuning of the thermal SPhP resonance for control of the light-matter interaction using thermal near-field radiation.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available