Antiferromagnetism at V/Co(001) interfaces

Unconventional resistivity at the border of metallic antiferromagnetism in NiS2

We report low-temperature and high-pressure measurements of the electrical resistivity T of the antiferromagnetic compound NiS2 in its high-pressure metallic state. The form of T , p suggests the presence of a quantum phase transition at a critical pressure pc=76 5 kbar. Near pc, the temperature variation of T is similar to that observed in NiS2−xSex near the critical composition x=1, where met...

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

Polarizable ions at interfaces.

A nonperturbative theory is presented which allows us to calculate the solvation free energy of polarizable ions near water-vapor and water-oil interfaces. The theory predicts that larger halogen anions are adsorbed at the interface, while the alkali metal cations are repelled from it. The density profiles calculated theoretically are similar to those obtained using molecular dynamics simulatio...

Water at Interfaces.

The interfaces of neat water and aqueous solutions play a prominent role in many technological processes and in the environment. Examples of aqueous interfaces are ultrathin water films that cover most hydrophilic surfaces under ambient relative humidities, the liquid/solid interface which drives many electrochemical reactions, and the liquid/vapor interface, which governs the uptake and releas...