When the complexity of a metallic compound reaches a certain level, a specific location in the structure may be critically responsible for a given fundamental property of a material while other locations may not play as much of a role in determining such a property. The first-principles theory has pinpointed a critical location in the framework of a complex intermetallic compound--Gd(5)Ge(4)--t...

We consider bosonic dipolar molecules in an optical lattice prepared in a mixture of different rotational states. The 1/R(3) interaction between molecules for this system is produced by exchanging a quantum of angular momentum between two molecules. We show that the Mott states of such systems have a large variety of quantum phases characterized by dipolar orderings including a state with an or...

Copper-oxide-based high-temperature superconductors have complex phase diagrams with multiple ordered phases. It even appears that the highest superconducting transition temperatures for certain cuprates are found in samples that display simultaneous onset of magnetism and superconductivity. We show here how the thermodynamics of fluid mixtures-a touchstone for chemistry as well as hard and sof...

Perovskite ABO3 oxides display many promising functional properties including ferroelectricity and magnetism. An ongoing challenge has been to design and synthesize materials in which ferroelectric and magnetic orderings not only coexist in a single phase above room temperature, but also are nontrivially coupled. Such a cross coupling between these different ferroic orderings could lead to many...

In a recent paper, 8 semileptonic parameters were defined to specify the most general Lorentz-invariant spin correlation functions for 2-body τ decays. These parameters can be used to search for anomalous ΓL, ΓT polarized-partial widths, for non-CKM-type leptonic CP violation, and for leptonic T̃FS violation. They can also be used to bound the effective-mass scales Λ for “new physics” arising fr...

S. Sendelbach, D. Hover, A. Kittel, M. Mück, John M. Martinis, and R. McDermott1,∗ Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA Institut für Physik, Carl von Ossietzky Universität, D-26111 Oldenburg, Germany Institut für Angewandte Physik, Justus-Leibig-Universität Gießen, D-35392 Gießen, Germany and Department of Physics, University of California, Santa...