Spin Solid versus Magnetic Charge Ordered State in Artificial Honeycomb Lattice of Connected Elements.

ABSTRACT: The nature of magnetic correlation at low temperature in two-dimensional artificial magnetic honeycomb lattice is a strongly debated issue. While theoretical researches suggest that the system will develop a novel zero entropy spin solid state as T → 0 K, a confirmation to this effect in artificial honeycomb lattice of connected elements is lacking. This study reports on the investigation of magnetic correlation in newly designed artificial permalloy honeycomb lattice of ultrasmall elements, with a typical length of ≈12 nm, using neutron scattering measurements and temperature-dependent micromagnetic simulations. Numerical modeling of the polarized neutron reflectometry data elucidates the temperature-dependent evolution of spin correlation in this system. As temperature reduces to ≈7 K, t

SUBMITTER: Glavic A 

PROVIDER: S-EPMC5908362 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature