Stability of Tripartite Entangled State in Spin Trimer Coupled to a Magnetic Ion
Year: 2026
Type: article
Abstract: A model of a spin-1/2 trimer coupled to a magnetic ion with spins ranging from 1/2 to 5/2 is introduced. We numerically calculate tripartite negativity of spin trimer. Numerical results show that the tripartite negativity has a nonzero plateau regardless of spin of the magnetic ion. We focus on tripartite entangled state corresponding to this plateau. As spin and exchange coupling of the magnetic ion increase, the tripartite entangled state becomes increasingly stable with respect to changes in external magnetic field and temperature. This phenomenon originates from the fact that internal magnetic field formed by the magnetic ion compensates the external magnetic field applied to spin trimer.
Source: Physics of the Solid State
Authors: C.-I. Kim, C.-H. Jong, T.-S. So, C.-S. Yun, C.-J. Kang
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7204870882