Results 111 to 120 of about 6,489,351 (253)

Dimensional Crossovers in the Doped Ladder System: Spin Gap, Superconductivity and Interladder Coherent Band Motion

open access: yes, 1998
Based on the perturbative renormalization group (PRG) approach, we have studied dimensional crossovers in Hubbard ladders coupled via weak interladder one-particle hopping, $t_{\perp}$.
Akimitsu J.   +50 more
core   +1 more source

Decoherence of a particle in a ring

open access: yes, 2007
We consider a particle coupled to a dissipative environment and derive a perturbative formula for the dephasing rate based on the purity of the reduced probability matrix.
Al'tshuler B. L.   +13 more
core   +1 more source

Properties of spin-triplet, even-parity superconductors

open access: yes, 1999
The physical consequences of the spin-triplet, even-parity pairing that has been predicted to exist in disordered two-dimensional electron systems are considered in detail.
A. Balatsky   +20 more
core   +1 more source

Metal particles supported by porous glass

open access: yesJournal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1986
We have investigated the use of porous ‘Vycor’ glass as a supporting matrix for silver and alkali-metal particles. By different methods of preparation it was possible to produce silver particles either within the pores of the glass or on the external surface. The optical spectra of silver particles are reported and discussed.
Edmonds, R, Harrison, M, Edwards, P
openaire   +2 more sources

Spin Gap and Superconductivity in Weakly Coupled Ladders: Interladder One-particle vs. Two-particle Crossover

open access: yes, 1999
Effects of the interladder one-particle hopping, $t_{\perp}$, on the low-energy asymptotics of a weakly coupled Hubbard ladder system have been studied, based on the perturbative renormalization-group approach.
Balents L.   +13 more
core   +1 more source

Effects of aluminum particle size on metal acceleration for CL-20-based aluminized explosives

open access: yesMaterials & Design
The addition of aluminum (Al) powder to CL-20 significantly enhances the overall energy of mixed explosives. Nonetheless, the metal acceleration ability of explosion after Al addition shows unpredictable behavior due to the unclear reaction ...
Fan Bai   +5 more
doaj   +1 more source

Surface treatment for valve seats [PDF]

open access: yes, 1970
Valve with embedded fine particles of diamond in the metal surface of the valve seat resists galling, corrosion, erosion, and cold welding. Diamond powder has an average particle diameter of 0.01 micron and is used with a standard fine diamond polishing ...
Macglashan, W. F., Jr.
core   +1 more source

Techniques for the observation of micrometeorite craters in metal substrates utilizing electron micrographic replica methods [PDF]

open access: yes
Thin film replica technique for obtaining high quality electron micrographs of craters in metal substrates formed by microscopic hypervelocity particle ...
Slattery, J. C., Sloan, R.
core   +1 more source

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