Kazan state Federal University E-Archive :: Browsing by Author "Fazleev N."

2D inhomogeneous superconducting states and umklapp processes in ferromagnet/superconductor nanostructures

Khusainov M.; Fazleev N.; Proshin Y. (2006)

We derive new three-dimensional (3D) boundary-value problem (BVP) for the proximity effect in ferromagnetic metal/superconductor (FM/S) nanostructures. Our theory takes into account the competition between the one-dimensional ...

Annihilation of positrons trapped at the (100) and (111) surfaces of Si

Fazleev N.; Kuttler K.; Fry J.; Weiss A. (1997)

We present results of theoretical studies of positron surface states and positron annihilation characteristics at the clean non reconstructed (100) and (111) surfaces of Si performed within the modified atomistic, superposition ...

Application of the Feynman-Kac path integral method in finding the ground state of quantum systems

Rejcek J.; Datta S.; Fazleev N.; Fry J.; Korzeniowski A. (1997)

Numerical methods of applying the Feynman-Kac path integral approach to quantum mechanics are presented. The methods are demonstrated on simple quantum mechanical systems, including the hydrogen atom, the simple harmonic ...

Auger-mediated sticking of positrons to surfaces: Evidence for a single-step transition from a scattering state to a surface image Potential bound State

Mukherjee S.; Nadesalingam M.; Guagliardo P.; Sergeant A.; Barbiellini B.; Williams J.; Fazleev N.; Weiss A. (2010)

We present the observation of an efficient mechanism for positron sticking to surfaces termed here Auger-mediated sticking. In this process the energy associated with the positrons transition from an unbound scattering ...

Decoupled superconductivity in the four- and five-layered ferromagnet-superconductor nanostructures and control devices

Proshin Y.; Zimin A.; Fazleev N.; Khusainov M. (2006)

The ferromagnet/superconductor (F/S) tetra- and pentalayer consisting of rather dirty metals are considered with regard for the boundary conditions. The dependences of critical temperatures Tc versus the thicknesses of the ...

Feynman-Kac path-integral calculations with high-quality trial wave functions

Datta S.; Fry J.; Fazleev N.; Alexander S.; Coldwell R. (2000)

We have computed the ground-state energies of the lithium and beryllium atoms using the Feynman-Kac path-integral method and high-quality trial wave functions. Our results are in excellent agreement with the best nonrelativistic ...

Hierarchy of critical temperatures in four-layered ferromagnet/ superconductor nanostructures and control devices

Proshin Y.; Zimin A.; Fazleev N.; Khusainov M. (2006)

The four-layered F/S/F′/S′ nanostructure consisting of rather dirty superconducting (S) and ferromagnetic (F) metals is studied within the theory of the proximity effect taking detailed account of the boundary conditions. ...

Interface defects of Al/GaAs(100) detected by Positron Annihilation Induced Auger Electron Spectroscopy (PAES)

Chen W.; Fazleev N.; Fry J.; Weiss A. (2001)

The interfacial layers between a metal overlayer and the semiconductor substrate are an integral part of semiconductor devices. As devices continue to shrink and epitaxial layers are made thinner, device performance has ...

Low-energy positrons at the Si(100)-2×1 surface with adsorbed hydrogen and oxygen

Fazleev N.; Fry J.; Weiss A. (2001)

Positron annihilation induced Auger spectra from the Si(100) surface exposed to hydrogen and oxygen are analyzed by performing calculations of positron surface states and annihilation characteristics of surface trapped ...

Measurement of the positron annihilation induced auger electron spectrum from Ag(100)

Joglekar P.; Shastry K.; Fazleev N.; Weiss A. (2013)

Research has demonstrated that Positron Annihilation Induced Auger Spectroscopy (PAES) can be used to probe the top-most atomic layer of surfaces and to obtain Auger spectra that are completely free of beam-impact induced ...

Multipolar interactions in rare-earth metals and alloys

Fazleev N. (1992)

The Hamiltonian of the indirect quadrupole-quadrupole interaction of rare-earth ions in metals and alloys is constructed self-consistently, taking into account the exchange interactions and correlations in a system of ...

Nuclear magnetic resonance in dilute magnetic alloys and superconductors

Fazleev N.; Mironov G. (1991)

The longitudinal and transverse spin-lattice relaxation rates for paramagnetic ion-nuclei in dilute Kondo systems are calculated. It is shown that observation of the Kondo anomalies in the NMR parameters is facilitated by ...

Nuclear magnetic resonance in dilute magnetic alloys and superconductors

Fazleev N.; Mironov G. (1991)

The longitudinal and transverse spin-lattice relaxation rates for paramagnetic ion-nuclei in dilute Kondo systems are calculated. It is shown that obsevation of the Kondo anomalies in the NMR parameters is facilitated by ...

Oxidation and thermal reduction of the Cu(1 0 0) surface as studied using positron annihilation induced Auger electron spectroscopy (PAES)

Fazleev N.; Nadesalingam M.; Maddox W.; Mukherjee S.; Rajeshwar K.; Weiss A. (2010)

Changes in the surface of an oxidized Cu(1 0 0) single crystal resulting from vacuum annealing have been investigated using positron annihilation induced Auger electron spectroscopy (PAES). PAES measurements show a large ...

Positron annihilation induced Auger electron spectroscopic studies of reconstructed semiconductor surfaces

Fazleev N.; Reed J.; Starnes S.; Weiss A. (2011)

The positron annihilation induced Auger spectrum from GaAs(100) displays six As and three Ga Auger peaks below 110 eV corresponding to M4,5VV, M2M4V, M2,3M4,5M4,5 Auger transitions for As and M2,3M4,5M4,5 Auger transitions ...

Positron probes of the Ge(1 0 0) surface: The effects of surface reconstructions and electron-positron correlations on positron trapping and annihilation characteristics

Fazleev N.; Jung E.; Weiss A. (2007)

Positron annihilation induced Auger electron spectroscopy (PAES) has been applied to study the Ge(1 0 0) surface. The high-resolution PAES spectrum from the Ge(1 0 0) surface displays several strong Auger peaks corresponding ...

Positron states and annihilation characteristics at semiconductor surfaces

Fazleev N.; Fry J.; Weiss A. (1997)

Experimental PAES spectra from the (100) and (111) surfaces of Ge display several strong Auger peaks in the measured energy range corresponding to M4,5N1N2,3 M2,3M4,5M4,5 M2,3M4,5V , and M1M2,3N1,2,3 Auger transitions. ...

Positron states and annihilation characteristics at the (100), (110), and (111) surfaces of alkali metals

Fazleev N.; Fry J.; Weiss A. (1998)

In this paper we present results of theoretical studies of positron states and annihilation characteristics at the clean surfaces of alkali metals. Positron surface states and positron work functions have been computed for ...

Positron trapping at quantum-dot-like particles on metal surfaces

Fazleev N.; Fry J.; Nadesalingam M.; Weiss A. (2006)

Measurements of the positron annihilation-induced Auger electron (PAES) spectra from the Fe-Cu alloy surfaces with quantum-dot-like Cu nanoparticles embedded in Fe reveal a decrease of the Fe M2,3VV positron annihilation-induced ...

Positron-annihilation-induced Auger electron spectroscopy studies of the (100) and (111) surfaces of silicon

Fazleev N.; Kim J.; Fry J.; Weiss A. (2003)

Experimental results are presented which provide a direct comparison of spectra obtained using positron annihilation induced Auger electron spectroscopy (PAES) for two different faces of a semiconductor, Si(100)-(2 × 1) ...

Browsing by Author "Fazleev N."

Browsing by Author "Fazleev N."

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