Antiferromagnetism in hydrated 123 compounds

Antiferromagnetism in Pr3In

We present neutron diffraction, magnetic susceptibility and specific heat data for a single-crystal sample of the cubic Cu3Au structure compound Pr3In. Antiferromagnetic order occurs below TN=12 K with propagation vector 0,0 ,0.5± where 1/12. The neutron diffraction results can be approximated with a model where the moments in each of the three Pr sublattices form ferromagnetic sheets perpendic...

Antiferromagnetism with Ultracold Atoms

We use ultracold spin–1/2 atomic fermions (Li) to realize the Hubbard model on a three-dimensional (3D) optical lattice. At relatively high temperatures and at densities near half-filling, we show that the gas forms a Mott insulator with unordered spins. To observe antiferromagnetic order that is predicted to occur at lower temperatures, we developed the compensated optical lattice method to ev...

Entangling Superconductivity and Antiferromagnetism

Pressure-induced antiferromagnetism in UPt

UPt orders ferromagnetically at ambient pressure at 28 K. Upon increasing pressure, an additional magnetic phase transition appears around 17 K. While the upper transition behaves with field as a typical paramagneticferromagnetic transition, the lower one exhibits antiferromagnetic behavior. With pressure both transitions shift towards lower temperatures. Around 1.5 GPa the upper magnetic trans...

Antiferromagnetism in EuCu2As2 and EuCu1.82Sb2 Single Crystals

Single crystals of EuCu2As2 and EuCu2Sb2 were grown from CuAs and CuSb self-flux, respectively. The crystallographic, magnetic, thermal and electronic transport properties of the single crystals were investigated by room-temperature x-ray diffraction (XRD), magnetic susceptibility χ versus temperature T , isothermal magnetization M versus magnetic field H , specific heat Cp(T ) and electrical r...