Magnetic field tuned anisotropic quantum phase transition in the distorted kagome antiferromagnet Nd3BWO9

Song，Fangyuan1; Ge，Han2; Liu，Andi1; Qin，Yuqi1; Han，Yuyan3; Ling，Langsheng3; Yuan，Songliu1; Ouyang，Zhongwen1; Sheng，Jieming2,4; Wu，Liusuo2,5; Tian，Zhaoming1,6

2023-12-01

10.1103/PhysRevB.108.214410

Physical Review B   影响因子和分区

2469-9950

2469-9969

Rare-earth (R) kagome-lattice magnets offer an excellent platform to discover the novel magnetic phase as well as quantum phase transition tuned by nonthermal control parameters, while the experimental realizations remain largely unexplored. Here, we report the discovery of magnetic field (B) -induced anisotropic quantum phase transition in a distorted kagome antiferromagnet Nd3BWO9 with TN∼0.32K. The isothermal magnetizations at 0.05 K exhibit the spin-flop-like metamagnetic crossover behaviors with different fractional magnetization anomalies for B perpendicular (B||c axis) and parallel (B||a∗ axis) to the kagome plane, respectively. In combination with the thermodynamic measurements, the field-temperature (B-T) phase diagrams for both field directions are constructed and reveal the existence of several field-induced magnetic states. Along the c axis, a proximate quantum bicritical point is observed near the metamagnetic crossover, which separates the low-field antiferromagnetic (AFM) phase and the intermediate AFM phase; while, for B||a∗, another intermediate magnetic phase (IAFM2) appears between the low-field AFM phase and the intermediate AFM (IAFM1) phase, giving rise to a tetracritical point. These results support the anisotropic field-induced metamagnetic quantum criticalities in Nd3BWO9, making it a rare kagome antiferromagnet to investigate the quantum multicriticality driven by spin frustration.

SCI

英语

其他

PHYSICS

2-s2.0-85180318058

Scopus

1.School of Physics,Wuhan National High Magnetic Field Center,Huazhong University of Science and Technology,Wuhan,430074,China
2.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China
3.Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions,High Magnetic Field Laboratory,Chinese Academy of Sciences,Hefei,230031,China
4.Spallation Neutron Source Science Center,Dongguan,523803,China
5.Shenzhen Key Laboratory of Advanced Quantum Functional Materials and Devices,Southern University of Science and Technology,Shenzhen,518055,China
6.Shenzhen Huazhong University of Science,Technology Research Institute,Shenzhen,518057,China

Song，Fangyuan,Ge，Han,Liu，Andi,et al. Magnetic field tuned anisotropic quantum phase transition in the distorted kagome antiferromagnet Nd3BWO9[J]. Physical Review B,2023,108(21).

Song，Fangyuan.,Ge，Han.,Liu，Andi.,Qin，Yuqi.,Han，Yuyan.,...&Tian，Zhaoming.(2023).Magnetic field tuned anisotropic quantum phase transition in the distorted kagome antiferromagnet Nd3BWO9.Physical Review B,108(21).

Song，Fangyuan,et al."Magnetic field tuned anisotropic quantum phase transition in the distorted kagome antiferromagnet Nd3BWO9".Physical Review B 108.21(2023).