Coexistence of a nearly spin-singlet state and antiferromagnetic long-range order in quantum spin system Cu2CdB2O6

Article

关键词: CRYSTAL CU1-XZNXGEO3;    NEUTRON-SCATTERING;    PEIERLS TRANSITION;    COMPOUND CUGEO3;    GAP;    ZN;    SR(CU1-XZNX)(2)O-3;    SUPERCONDUCTIVITY;    MAGNETIZATION;    MAGNETISM;   

DOI  :  10.1103/PhysRevB.72.172412

来源: SCIE

【 摘 要 】

A 1/2 magnetization plateau in magnetic fields above 23 T and antiferromagnetic (AF) long-range order (AFLRO) in low fields were found in Cu2CdB2O6. Experimental results agree with quantum Monte Carlo results for an expected spin system. There are two kinds of Cu sites, [Cu(1) and Cu(2)], which are located adjacent to each other. Unexpectedly, spins on the Cu(1) and Cu(2) sites are in a nearly spin-singlet state and form AFLRO, respectively, although interactions between the Cu(1) and Cu(2) spins cannot be ignored. Cu2CdB2O6 is the first material which shows such coexistence in an atomic scale.

【 授权许可】

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