Recent inelastic neutron scattering (INS) experiments of the triangular antiferromagnet Ba3CoSb2O9 revealed strong deviations from semiclassical theories. We demonstrate that key features of the INS data are well reproduced by a parton Schwinger boson theory beyond the saddle-point approximation. The ...
phase of Ba3CoSb2O9 Author Correction: The nature of spin excitations in the one-third magnetization plateau phase of Ba3CoSb2O9Author Correction: The nature of spin excitations in the one-third magnetization plateau phase of Ba3CoSb2O9The original version of this Article omitted the ...
【题目】如图,PB为⊙O的切线,B为切点,直线PO交⊙于点E、F,过点B作PO的垂线BA,垂足为点D,交⊙O于点A,延长AO与⊙O交于点C,连接BC,AF. (1)求证:直线PA为⊙O的切线;(2)试探究线段EF、OD、OP之间的等量关系,并加以证明;(3)若BC=6,tan∠F= ,求cos∠ACB的值和线段PE的长.试题...
Ba3CoSb2O9 approximates the two-dimensional spin-12 triangular-lattice Heisenberg antiferromagnet. This compound displays magnetic-field-induced quantum phase transitions, including the 13-magnetization plateau, but its magnetization processes for the magnetic field H parallel and perpendicular to the c ...
B1. OxidesB2. Magnetic materialsB2. Triangular-lattice•High pressure mixed gas atmosphere is used to minimize the evaporation.•A large size Ba3CoSb2O9single crystal is grown for the first time.•Magnetic anisotropy is observed.doi:10.1016/j.jcrysgro.2016.10.075Prabhakaran, D....
Thermal Conductivity in the Triangular-Lattice Antiferromagnet Ba3CoSb2O9doi:10.1088/1742-6596/568/4/042014K NaruseT KawamataM OhnoY MatsuokaH SudoH NagasawaY HagiyaT SasakiY KoikeIOP Publishing27th International Conference on Low Temperature Physics, LT 2014...
The analysis indicates that, while the magnetoelastic coupling in Ba3CoSb2O9 is large in comparison to other triangular lattice antiferromagnets, the strength of this coupling is still too small to fully account for the magnetization plateau width in Ba3CoSb2O9. Spin fluctuations are therefore...
We have measured the thermal conductivity in the ab-plane, $\\kappa$ab, and along the c-axis, $\\kappa$c, of single crystals of the S = 1/2 triangular-lattice antiferromagnet Ba3CoSb2O9 in zero field and magnetic fields. In zero field, it has been found that both $\\kappa$ab ...
Using magnetic, thermal, and neutron measurements on single-crystal samples, we show that Ba3CoSb2O9 is a spin-1/2 triangular-lattice antiferromagnet with the c axis as the magnetic easy axis and two magnetic phase transitions bracketing an intermediate up-up-down phase in magnetic field ...
The magnetic phases of the ideal spin-1/2 triangular-lattice antiferromagnet Ba_3CoSb_2O_9 are identified and studied using ~(135,137)Ba nuclear magnetic resonance (NMR) spectroscopy in magnetic fields ranging to 30 T, oriented parallel and near perpendicular to the crystallographic ab plane. ...