Publications by authors named "Otto H J Mustonen"
Article Synopsis
- * The double perovskites SrCuTeO and SrCuWO, although related, display different magnetic orders and interactions due to a d/d effect, leading to varying states in their solid solution SrCuTeWO.
- * Neutron scattering studies reveal distinct local spin correlations in spin liquid-like samples and indicate that magnetic phase separation occurs in W-rich samples, suggesting a complex magnetism with possible new quantum critical points in the system.
BaCuTeO has attracted significant attention as it contains a two-leg spin ladder of Cu cations that lies in close proximity to a quantum critical point. Recently, BaCuTeO has been shown to accommodate chemical substitutions, which can significantly tune its magnetic behavior. Here, we investigate the effects of substitution for non-magnetic Zn impurities at the Cu site, partitioning the spin ladders.
View Article and Find Full Text PDFKagome networks of ferromagnetically or antiferromagnetically coupled magnetic moments represent important models in the pursuit of a diverse array of novel quantum and topological states of matter. Here, we explore a family of Cu-containing metal-organic frameworks (MOFs) bearing kagome layers pillared by ditopic organic linkers with the general formula Cu(CO)()·2ClO (MOF-), where is 1,2-bis(4-pyridyl)ethane (), 1,2-bis(4-pyridyl)ethylene (), or 4,4'-azopyridine (). Despite more than a decade of investigation, the nature of the magnetic exchange interactions in these materials remained unclear, meaning that whether the underlying magnetic model is that of an kagome ferromagnet or antiferromagnet is unknown.
View Article and Find Full Text PDFArticle Synopsis
- Isovalent nonmagnetic d and d B″ cations are effective for modifying magnetic interactions in AB'B″O double perovskites due to changes in orbital hybridization.
- The introduction of d and d cations can create various magnetic structures and promote exotic quantum magnetism by altering superexchange pathways.
- In a study on BaCuTeO, substituting Te with W led to site-selective doping, influencing intra-ladder interactions and enabling a transition from a spin ladder to isolated spin chains as W concentration increased.*