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Layer transitions in CF 4 adsorbed on graphite are studied by vapor-pressure isotherm measurements in the range one to eight layers and 52 K
An ESR investigation is performed on Langmuir-Blodgett (LB) films consisting of a surface-active 1:2 complex of N -docosylpyridinium and tetracyanoquinodimethane (TCNQ). A characteristic temperature dependence in the spin susceptibility and the linewidth is observed, which shows reasonable...
Hg 3 - δ SbF 6 exhibits two distinct superconducting transitions in magnetization measurements: one at 3.7 K and one at 0.42 K with the field parallel to the c axis. The high-temperature transition at 3.7 K has a partial Meissner effect and a critical field near 400 G. The low-temperature...
The resistance R(x,x ’ ) between two connected terminals in a randomly diluted resistor network is studied on a d -dimensional hypercubic lattice at the percolation threshold p c . When each individual resistor has a small random component of resistance, R(x,x ’ ) becomes a random variable...
We consider a continuous-symmetry ferromagnet for d=3 with random anisotropy which is weak compared to exchange ( H r ≪ H ex ), in the presence of an external field H . At low fields the system is macroscopically disordered (the Imry-Ma or correlated spin-glass regime), and the external field...
The cluster-variation method is applied to random-field lattice systems and specifically used to model the disorder-disorder phase transition of hydrogen in niobium-molybdenum and niobium-vanadium alloys. A small concentration of molybdenum or vanadium in the niobium lattice is treated as adding...
The nonequilibrium phase transitions occurring in a fast-ionic-conductor model and in a reaction-diffusion Ising model are studied by Monte Carlo finite-size scaling to reveal nonclassical critical behavior; our results are compared with those in related models.
Specific-heat, susceptibility, and resistivity data for YbSi are reported. The specific heat shows a second-order transition to a phase which is probably antiferromagnetic. It has one of the largest γ values found to date for Yb compounds. Above 25 K, the system has an anomalously large...
The quasistatic local lattice distortions around individual interstitial deuterium defects in niobium have been investigated by means of coherent quasielastic neutron scattering. The important experimental issues of this study are discussed in detail. We compare the observed absolute scattering...
We present detailed calculations of the electronic structure and the hyperfine fields of 3 d and 4 d impurities in nickel. The calculations are based on the local-density approximation of density-functional theory and the Korringa-Kohn-Rostoker Green’s-function method for impurity calculations....
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