Intrinsic 1 T ′ phase induced in atomically thin 2H-MoTe₂ by a single terahertz pulse.

ABSTRACT: The polymorphic transition from 2H to 1T′-MoTe₂, which was thought to be induced by high-energy photon irradiation among many other means, has been intensely studied for its technological relevance in nanoscale transistors due to the remarkable improvement in electrical performance. However, it remains controversial whether a crystalline 1T′ phase is produced because optical signatures of this putative transition are found to be associated with the formation of tellurium clusters instead. Here we demonstrate the creation of an intrinsic 1T′ lattice after irradiating a mono- or few-layer 2H-MoTe₂ with a single field-enhanced terahertz pulse. Unlike optical pulses, the low terahertz photon energy limits possible structural damages. We further develop a single-shot terah

SUBMITTER: Shi J 

PROVIDER: S-EPMC10516973 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature