We significantly reduce the critical current Ic0 for the onset of spin torque switching of the free layer in nanometer-scale in-plane magnetized spin valves by partially canceling its demagnetization field (Hd) through the utilization of Co/Ni multilayer free layers. A zero-thermal-fluctuation critical current density Jc0 ~ 2 × 106 A/cm2 is determined through both current ramp rate and nanoseco...

Normal-state orbital diamagnetism of charged bosons quantitatively accounts for recent high-resolution magnetometery results near and above the resistive critical temperature T(c) of superconducting cuprates. The parameter-free descriptions of normal-state diamagnetism, T(c), upper critical fields, and specific heat anomalies support the 3D Bose-Einstein condensation of preformed real-space pai...

Normal state orbital diamagnetism of charged bosons quantitatively accounts for recent highresolution magnetometery results near and above the resistive critical temperature Tc of superconducting cuprates. Our parameter-free descriptions of normal state diamagnetism, Tc, upper critical fields and specific heat anomalies unambiguously support the 3D Bose-Einstein condensation of preformed real-s...

Flows of dissipative particles driven by the peristaltic motion of a tube are numerically studied. A transition from a slow "unjammed" flow to a fast "jammed" flow is found through the observation of the flow rate at a critical width of the bottleneck of a peristaltic tube. It is also found that the average and fluctuation of the transition time, and the peak value of the second moment of the f...

We discuss the possibility of weak first order transition in the domain of pressure induced phase transitions in quantum paraelectrics as a consequence of the coupling between strain and order parameter fluctuations. We start with a semimicroscopic Hamiltonian, where paraelectric(optical mode) fluctuations are controlled by hydrostatic pressure via strain coupling, which above certain strength ...

Sequence organizations are viewed from two points: one is from informational redundancy or informational correlation (IC) and another is from k-mer frequency statistics. Two problems are investigated. The first is how the ICs exceed the fluctuation bound and the order emerges from fluctuation in a genome when the sequence length attains some critical value. We demonstrated that the transition f...

We discuss the possibility of weak first order transition in the domain of pressure induced phase transitions in a quantum ferroelectric as a consequence of order parameter fluctuations. We start with a semi-microscopic Hamiltonian, where polarization fluctuations are controlled by hydrostatic pressure via strain coupling, which above certain strength of coupling constant, kills second order tr...

Transverse-field muon spin relaxation measurements have been carried out on the heavy-fermion superconductor UPt (3) doped with small amounts of Pd. We find that the critical Pd concentration for the emergence of the large-moment antiferromagnetic phase is approximately 0.6 at. %Pd. At the same Pd content, superconductivity is completely suppressed. The existence of a magnetic quantum critical ...