High anisotropy in electrical and thermal conductivity through the design of aerogel-like superlattice (NaOH)_0.5NbSe₂.

ABSTRACT: Interlayer decoupling plays an essential role in realizing unprecedented properties in atomically thin materials, but it remains relatively unexplored in the bulk. It is unclear how to realize a large crystal that behaves as its monolayer counterpart by artificial manipulation. Here, we construct a superlattice consisting of alternating layers of NbSe₂ and highly porous hydroxide, as a proof of principle for realizing interlayer decoupling in bulk materials. In (NaOH)_0.5NbSe₂, the electric decoupling is manifested by an ideal 1D insulating state along the interlayer direction. Vibration decoupling is demonstrated through the absence of interlayer models in the Raman spectrum, dominant local modes in heat capacity, low interlayer coupling energy and out-of-p

SUBMITTER: Sun R 

PROVIDER: S-EPMC10590432 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature