Abstract:
:Geometric frustration, in which competing interactions give rise to degenerate ground states, potentially induces various exotic quantum phenomena in magnetic materials. Minimal models comprising triangular units, such as triangular and Kagome lattices, have been investigated for decades to realize novel quantum phases, such as quantum spin liquid. A pentagon is the second-minimal elementary unit for geometric frustration. The realization of such systems is expected to provide a distinct platform for studying frustrated magnetism. Here, we present a spin-1/2 quantum pentagonal lattice in the new organic radical crystal α-2,6-Cl2-V [=α-3-(2,6-dichlorophenyl)-1,5-diphenylverdazyl]. Its unique molecular arrangement allows the formation of a partially corner-shared pentagonal lattice (PCPL). We find a clear 1/3 magnetization plateau and an anomalous change in magnetization in the vicinity of the saturation field, which originate from frustrated interactions in the PCPL.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Yamaguchi H,Okubo T,Kittaka S,Sakakibara T,Araki K,Iwase K,Amaya N,Ono T,Hosokoshi Ydoi
10.1038/srep15327subject
Has Abstractpub_date
2015-10-15 00:00:00pages
15327issn
2045-2322pii
srep15327journal_volume
5pub_type
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