Unusual dimerization and magnetization plateaus in S=1 skew chain Ni2V2O7 observed at 120 T

被引：20

作者：

Cao, J. J. ^{[1
,2
]}

Ouyang, Z. W. ^{[1
,2
]}

Liu, X. C. ^{[1
,2
]}

Xiao, T. T. ^{[1
,2
]}

Song, Y. R. ^{[1
,2
]}

Wang, J. F. ^{[1
,2
]}

Ishii, Y. ^{[3
]}

Zhou, X. G. ^{[3
]}

Matsuda, Y. H. ^{[3
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China

[3] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

来源：

PHYSICAL REVIEW B | 2022年 / 106卷 / 18期

基金：

中国国家自然科学基金;

关键词：

Compendex;

D O I：

10.1103/PhysRevB.106.184409

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using ultrahigh magnetic field up to 120 T, a 1/2 magnetization plateau within 11.7-34.8 T and a 3/4-like plateau within 55.6-87.0 T have been observed in the S-1 skew chain antiferromagnet Ni2V2O7. By combining density functional theory calculations, exact diagonalization, and quantum Monte Carlo simulations, we find that the nearest-neighbor interchain interaction (J3/kB = -78.5 K) is much stronger than the intrachain interactions (J1/kB = -1.0 K and J2/kB = 6.3 K), showing surprising "dimerization" of magnetic ions caused by the large 3d-orbital overlap along the Ni1-Ni1 bond. Thus a "dimer+monomer" model is proposed to describe the magnetization process-the 1/2 plateau pertains to weakly coupled Ni2 monomers while the 3/4-like plateau to the strongly coupled Ni1 dimers. The possible supersolid phases from the Ni1 dimers are proposed.

引用

页数：6

共 43 条

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