Topological defects in graphene materials introduce exotic properties with both fundamental importance and technological implications,absent in their defect-free *** individual topological defects have been widely stu...
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Topological defects in graphene materials introduce exotic properties with both fundamental importance and technological implications,absent in their defect-free *** individual topological defects have been widely studied,collective magnetic behaviors originating from well-organized multiple topological defects remain a great ***,we examined the collective magnetic properties originating from three pentagon topological defects in truxene-based molecular graphenoids using scanning tunneling microscopy(stm)and non-contact atomic force ***πelectrons were introduced into the aromatic topology of truxene molecular graphenoids one by one by dissociating hydrogen atoms at the pentagon defects via atom *** measurements,together with density functional theory calculations,suggested that the unpaired electrons were ferromagnetically coupled,forming a collective highspin quartet state of S=3/*** work demonstrates that collective spin ordering could be realized through engineering regular patterned topological defects in molecular graphenoids,providing a new platform for designing one-dimensional ferromagnetic spin chains and two-dimensional ferromagnetic networks.
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