2002/11/30 by Nicolas Laflorencie, Didier Poilblanc · 1 citation
Physics and Astronomy · #Condensed matter physics #Coupling (piping) #Dopant #Doping #Frustration #Magnetic moment #Materials science #Physics #Physics of Superconductivity and Magnetism #Quantum many-body systems #Quantum mechanics #Soliton #Spin (aerodynamics) #Theoretical and Computational Physics #Thermodynamics #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.90.157202
published as Phys. Rev. Lett. 90, 157202 (2003) · Few modifications and references added. Submitted to PRL
arxiv created 2003/04/17 · openalex publication_date 2003/04/17 · arxiv updated 2009/11/30 · openalex created_date 2020/05/13 · openalex updated_date 2026/08/05
The role of various magnetic interchain couplings is investigated by numerical methods in doped frustrated quantum spin chains. A nonmagnetic dopant introduced in a gapped spin chain releases a free spin-1/2 soliton. The formation of a local magnetic moment is analyzed in terms of soliton confinement. A four-spin coupling which might originate from cyclic exchange is shown to produce such a confinement. Dopants on different chains experience an effective space-extended nonfrustrating pairwise spin interaction.