Structural and electrical properties of granular metal films

Abeles, B.; Sheng, Ping; Coutts, M. D.; Arie, Y.

doi:10.1080/00018737500101431

Cited by 1,388 publications

(742 citation statements)

References 46 publications

Supporting

Mentioning

654

Contrasting

Unclassified

Order By: Relevance

“…These processes are negligible at high temperature, where tunneling takes place through particles of similar sizes: electrons cannot tunnel either to a smaller particle, since the Coulomb charging energy is larger, or to a larger particle, which is further away, since the tunnel resistance is larger. This was already noted by Abeles et al 4 In this paper, we present a study of the magnetic and magnetotransport properties of granular Co-ZrO 2 thin films prepared by pulsed laser deposition ͑PLD͒ within a wide volume concentration range of Co ͑0.15Ͻ x Ͻ 0.43͒. The samples display well defined Co nanoparticles and sharp particle-matrix interfaces.…”

Section: Introductionmentioning

confidence: 75%

“…Nevertheless, the behavior of these materials is determined by a complex interplay of intrinsic properties, size distribution of the nanoparticles, finite-size and surface effects, and many-body effects associated with interparticle interactions. [2][3][4][5][6] Finite-size effects dominate the magnetic behavior of individual nanoparticles, increasing their relevance as the particle size decreases. Among these, the phenomenon of superparamagnetism has probably provoked the largest amount of research.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Tunneling magnetoresistance inCo−ZrO2granular thin films

et al. 2006

View full text Add to dashboard Cite

Granular films composed of well defined nanometric Co particles embedded in an insulating ZrO 2 matrix were prepared by pulsed laser depositon in a wide range of Co volume concentrations ͑0.15Ͻ x Ͻ 0.43͒. High-resolution transmission electron microscopy ͑TEM͒ showed very sharp interfaces between the crystalline particles and the amorphous matrix. Narrow particle size distributions were determined from TEM and by fitting the low-field magnetic susceptibility and isothermal magnetization in the paramagnetic regime to a distribution of Langevin functions. The magnetic particle size varies little for Co volume concentrations x Ͻ 0.32 and increases as the percolation limit is approached. The tunneling magnetoresistance ͑TMR͒ was successfully reproduced using the Inoue-Maekawa model. The maximum value of TMR was temperatureindependent within 50-300 K, and largely increased at low T, suggesting the occurrence of higher-order tunneling processes. Consequently, the tunneling conductance and TMR in clean granular metals are dominated by the Coulomb gap and the inherent particle size distribution.

show abstract

Section: Introductionmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Tunneling magnetoresistance inCo−ZrO2granular thin films

et al. 2006

View full text Add to dashboard Cite

show abstract

“…Exponent P = 1/2 in Eq. (1) was theoretically predicted by Shklovskii for hopping transport [7] and interclusters tunneling [6].…”

Section: Resultsmentioning

confidence: 99%

“…For the insulating regime of conductivity temperature dependence of resistance disordered electronic systems can be described by the well-known Mott equation for hopping conductivity [5] or as a process of electrons tunnelling between metallic clusters in the insulating matrix divided by tunnel-penetrate barriers [6]:…”

Section: Resultsmentioning

confidence: 99%

Structure and Electron-Transport Properties of Photoresist Implanted by Sb⁺Ions

et al. 2011

View full text Add to dashboard Cite

Morphology and electron-transport properties in the photoresist-silicon structures implanted by 60 keV antimony in the fluence range 1 × 10 15 ÷ 5 × 10 16 cm −2 with the ion current density 4 µA/cm 2 have been investigated. Microhardness increases with the increasing fluence. Non-monotonous dependence of microhardness on the depth in the implanted structures was observed. Transition from insulating to the metallic regime of conductivity was not observed.

show abstract

“…18). Charge transport depends on the interparticle distance and the electrostatic charging energy of the donor acceptor nanocrystal couple [178,179].…”

Section: Interparticle Charge Transportmentioning

confidence: 99%

Nanoscale Effects in Water Splitting Photocatalysis

Osterloh

2015

Topics in Current Chemistry

View full text Add to dashboard Cite

From a conceptual standpoint, the water photoelectrolysis reaction is the simplest way to convert solar energy into fuel. It is widely believed that nanostructured photocatalysts can improve the efficiency of the process and lower the costs. Indeed, nanostructured light absorbers have several advantages over traditional materials. This includes shorter charge transport pathways and larger redox active surface areas. It is also possible to adjust the energetics of small particles via the quantum size effect or with adsorbed ions. At the same time, nanostructured absorbers have significant disadvantages over conventional ones. The larger surface area promotes defect recombination and reduces the photovoltage that can be drawn from the absorber. The smaller size of the particles also makes electron-hole separation more difficult to achieve. This chapter discusses these issues using selected examples from the literature and from the laboratory of the author.

show abstract

Structural and electrical properties of granular metal films

Cited by 1,388 publications

References 46 publications

Tunneling magnetoresistance inCo−ZrO2granular thin films

Tunneling magnetoresistance inCo−ZrO2granular thin films

Structure and Electron-Transport Properties of Photoresist Implanted by Sb⁺Ions

Nanoscale Effects in Water Splitting Photocatalysis

Contact Info

Product

Resources

About

Structural and electrical properties of granular metal films

Cited by 1,388 publications

References 46 publications

Tunneling magnetoresistance inCo−ZrO2granular thin films

Tunneling magnetoresistance inCo−ZrO2granular thin films

Structure and Electron-Transport Properties of Photoresist Implanted by Sb+Ions

Nanoscale Effects in Water Splitting Photocatalysis

Contact Info

Product

Resources

About

Structure and Electron-Transport Properties of Photoresist Implanted by Sb⁺Ions