نتایج جستجو برای: interlayer

تعداد نتایج: 6067  

2001
Zailong Zhuang Bo Bian Robert M. White David E. Laughlin

The effects of a Pt underlayer and a Pt interlayer on the textured growth of the sputtered strontium ferrite (SrM) films were investigated. The structural and magnetic properties of SrM films on the Pt underlayers were compared with SrM films on thermally oxidized Si substrates. It was found that much better (00 ) texture was obtained on the films with Pt underlayers, as indicated by the strong...

Journal: :Physical review letters 2011
Zhengrong Guo Tienchong Chang Xingming Guo Huajian Gao

Molecular dynamics simulations reveal that thermal-induced edge barriers and forces can govern the interlayer interaction of double walled carbon nanotubes. As a result, friction in such systems depends on both the area of contact and the length of the contact edges. The latter effect is negligible in macroscopic friction and provides a feasible explanation for the seemingly contradictory laws ...

2005
S. M. Zhou L. Sun

For amorphous-FeNiB (2.0 nm)/Ru multilayers, an oscillatory interlayer coupling is observed with the variation of the Ru spacer thickness. At 0.8 nm thick Ru layer, near the first antiferromagnetic coupling maximum, the energy of the effective interlayer coupling at low temperature T is found to change as a linear function of T: At the same time, the spontaneous magnetization of the samples at ...

2000
D. C. Parks P. J. Chen Romel D. Gomez

We have studied the behavior of interlayer coupling in giant magnetoresistance spin valves as a function of seed layer composition and spacer layer thickness. Using in situ scanning tunneling microscopy, we have measured directly the roughness of the top surface of the lower ferromagnetic layer. We find that the seed layer composition is correlated to the roughnesses of the interfaces inside th...

Journal: :Physical review letters 2009
Z Q Li E A Henriksen Z Jiang Z Hao M C Martin P Kim H L Stormer D N Basov

We report on infrared spectroscopy of bilayer graphene integrated in gated structures. We observe a significant asymmetry in the optical conductivity upon electrostatic doping of electrons and holes. We show that this finding arises from a marked asymmetry between the valence and conduction bands, which is mainly due to the inequivalence of the two sublattices within the graphene layer and the ...

2009
J. D. Cross B. R. Ilic M. K. Zalalutdinov W. Zhou J. W. Baldwin B. H. Houston H. G. Craighead J. M. Parpia

We demonstrate piezoresistive transduction of mechanical motion from out-of-plane flexural micromechanical resonators made from stacked thin films. The resonators are fabricated from two highly doped polycrystalline silicon layers separated by an interlayer dielectric. We examine two interlayer materials: thermal silicon dioxide and stoichiometric silicon nitride. We show that via one-time diel...

Journal: :Physical review letters 2010
E V Emelianova S Athanasopoulos R J Silbey D Beljonne

A number of organic crystals show anisotropic excitonic couplings, with weak interlayer interactions between molecules that are more strongly coupled within the layers. The resulting energy carriers are intralayer 2D excitons that diffuse along the interlayer direction. We model this analytically for infinite layers and using quantum-chemical calculations of the electronic couplings for anthrac...

Journal: :Physical review letters 2010
A Pikovski M Klawunn G V Shlyapnikov L Santos

We consider fermionic polar molecules in a bilayer geometry where they are oriented perpendicularly to the layers, which permits both low inelastic losses and superfluid pairing. The dipole-dipole interaction between molecules of different layers leads to the emergence of interlayer superfluids. The superfluid regimes range from BCS-like fermionic superfluidity with a high Tc to Bose-Einstein (...

Journal: :Physical chemistry chemical physics : PCCP 2012
Byung Hoon Kim Won G Hong Han Young Yu Young-Kyu Han Sang Moon Lee Sung Jin Chang Hoi Ri Moon Yongseok Jun Hae Jin Kim

We have obtained high pressure H(2) isotherms with respect to the interlayer distance of multilayered graphene oxide (GO) modulated by thermal annealing. The maximum storage capacity is 4.8 (0.5) wt% at 77 K (298 K) and at 9.0 MPa pressure. We found the optimum GO interlayer distance for maximum H(2) uptake at 6.5 Å, similar to the predicted distances from first-principles calculations for grap...

Journal: :The journal of physical chemistry. A 2010
G V Gibbs A F Wallace R Zallen R T Downs N L Ross D F Cox K M Rosso

The calculated electron density distribution for orpiment, As(2)S(3), reveals that As-S, S-S, and As-As bond paths are associated with the experimental interlayer directed bonded interactions detected in a combined infrared and Raman study. The successful modeling of the infrared- and Raman-determined interlayer bonded interactions together with bond paths and the structuralization of a variety...

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