1Dconfined crystallization routes for tungsten phosphides
Abstract
Topological materials confined in onedimension (1D) can transform computing technologies, such as 1D topological semimetals for nanoscale interconnects and 1D topological superconductors for faulttolerant quantum computing. As such, understanding crystallization of 1Dconfined topological materials is critical. Here, we demonstrate 1Dconfined crystallization routes during templateassisted nanowire synthesis where we observe diameterdependent phase selectivity for topological metal tungsten phosphides. A phase bifurcation occurs to produce tungsten monophosphide and tungsten diphosphide at the crossover nanowire diameter of ~ 35 nm. Fourdimensional scanning transmission electron microscopy was used to identify the two phases and to map crystallographic orientations of grains at a few nm resolution. The 1Dconfined phase selectivity is attributed to the minimization of the total surface energy, which depends on the nanowire diameter and chemical potentials of precursors. Theoretical calculations were carried out to construct the diameterdependent phase diagram, which agrees with experimental observations. Our findings suggest a new crystallization route to stabilize topological materials confined in 1D.
 Publication:

arXiv eprints
 Pub Date:
 September 2023
 DOI:
 10.48550/arXiv.2309.11314
 arXiv:
 arXiv:2309.11314
 Bibcode:
 2023arXiv230911314J
 Keywords:

 Condensed Matter  Materials Science
 EPrint:
 5 figures