Liusuo Wu

Magnetic structure of Yb2Pt2Pb: Ising moments on the Shastry-Sutherland lattice

Here, we have synthesized single crystals of Yb2Pt2Pb, which crystallize in the layered U2Pt2Sn-type structure, where planes of Yb ions lie on a triangular network. Here, we report the results of magnetization, specific heat, and electrical resistivity experiments. The lattice constants and high temperature magnetic susceptibility indicate that the Yb ions are trivalent, while the Schottky peaks in the specific heat show that the ground state is a well isolated doublet. A significant magnetic anisotropy is observed, with the ratio of susceptibilities perpendicular and parallel to the magnetic planes differing by as much as a factor of 30 at the lowest temperatures. Antiferromagnetic order occurs at a Neel temperature TN = 2.07 K. Evidence of short range magnetic fluctuations is found in the magnetic susceptibility and electrical resistivity, which have broad peaks above TN, and in the slow development of the magnetic entropy at TN. Our experiments indicate that Yb2Pt2Pb is a quasi-two-dimensional and localized moment system, where strong magnetic frustration may arise from the geometry of the underlying Shastry-Sutherland lattice.

Crystal structure of yttrium iron aluminium (1/2/10), YFe2Al10

Abstract YFe2Al10, orthorhombic, Cmcm (no. 63), a = 8.9654(2) Å, b = 10.1578(3) Å, c = 9.0110(3) Å, V = 820.6 Å3, Z = 4, Rgt(F) = 0.018, wRref(F2) = 0.034, T = 295 K.

Magnetic Field Tuning of Antiferromagnetic Yb3Pt4

We present measurements of the specific heat, magnetization, magnetocaloric effect and magnetic neutron diffraction carried out on single crystals of antiferromagnetic Yb

Field-tuned Fermi liquid in quantum critical YFe2Al10

_{3}

Factors governing Yb magnetism in Yb0.95PtIn2 and other MgCuAl2-type structures

Pt

Spinon Confinement and a Longitudinal Mode in One Dimensional Yb 2 Pt 2 Pb

_{4}

Quantum Criticality and 2-D dissipative quantum XY ferromagnetism in single crystalline YFe2Al10 from MuSR investivations

, where highly localized Yb moments order at

Quantum Criticality in YFe

T_{\rm N}=2.4

_2

K in zero field. The antiferromagnetic order was suppressed to

Al

T_{\rm N}\rightarrow 0