Analysis of the magnetoresistance of three-dimensional amorphous metals with weak localization and electron-electron interaction theories

We use the Lanczos method to calculate the variance σ2(E, ϕ) of the number of energy levels in an energy window of width E below the Fermi energy for noninteracting disordered electrons on a thin three-dimensional ring threaded by an Aharonov–Bohm flux ϕ. We confirm numerically that for small E the flux-dependent part of σ2(E, ϕ) is well described by the Altshuler–Shklovskii-diagram involving two Cooperons. However, in the absence of electron–electron interactions this result cannot be extrapolated to energies E where the energy-dependence of the average density of states becomes significant. We discuss consequences for persistent currents and argue that for the calculation of the difference between the canonical- and grand canonical current it is crucial to take the electron–electron interaction into account.

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Electron weak localization and electron–electron interaction effects on magneto-conductivity in In–Ga–Zn oxide films

Thin Solid Films ◽

10.1016/j.tsf.2013.11.088 ◽

2014 ◽

Vol 551 ◽

pp. 195-199 ◽

Cited By ~ 2

Author(s):

Bunju Shinozaki ◽

Kazuya Hidaka ◽

Syouhei Ezaki ◽

Kazumasa Makise ◽

Takayuki Asano ◽

...

Keyword(s):

Oxide Films ◽

Weak Localization ◽

Interaction Effects ◽

Electron Interaction

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Separating weak-localization and electron-electron-interaction contributions to the conductivity of carbon nanostructures

Journal of Experimental and Theoretical Physics ◽

10.1134/s1063776107070497 ◽

2007 ◽

Vol 105 (1) ◽

pp. 223-226 ◽

Cited By ~ 7

Author(s):

E. N. Tkachev ◽

A. I. Romanenko ◽

O. B. Anikeeva ◽

T. I. Buryakov ◽

V. E. Fedorov ◽

...

Keyword(s):

Carbon Nanostructures ◽

Weak Localization ◽

Electron Interaction

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Collective mode dispersions of organic chain compounds

Open Physics ◽

10.2478/s11534-009-0113-x ◽

2010 ◽

Vol 8 (3) ◽

Cited By ~ 4

Author(s):

Željana Lošić ◽

Paško Županović

Keyword(s):

Collective Mode ◽

Random Phase ◽

Tight Binding ◽

Three Dimensional ◽

Plasmon Mode ◽

Optical Data ◽

Electron Interaction ◽

Coulomb Interactions ◽

One Dimensional ◽

Donor And Acceptor

AbstractWe investigate the collective mode dispersions for the tight-binding dielectric matrix with two one-dimensional electron bands per donor and acceptor chains, and the three-dimensional long-range Coulomb electron-electron interaction within the random phase approximation. The hybridized collective modes are the result of the strong coupling between the intraband plasmon and the interband dipolar modes due to strong dipole Coulomb interactions. Our calculations show the existence of the low-energy renormalized plasmon mode above the electron-hole quasi-continuum in the long wavelength limit. The obtained modes are brought into correspondence with the optical data of quasi-one-dimensional organic conductor tetrathiafulvalene-tetracyanoquinodimethane (TTF-TCNQ). Namely, the renormalized plasmon and the dipolar mode are assigned to the observed excitations at respective energy scales of roughly 10 meV and 0.75 eV, explaining why lower excitation is eliminated while higher excitation persists below the temperature of the Peierls phase transition.

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Localization and Electron-Electron Interaction Effects in Platinum Silicide Thin Wires

MRS Proceedings ◽

10.1557/proc-76-13 ◽

1986 ◽

Vol 76 ◽

Cited By ~ 1

Author(s):

S. Ishida ◽

K. Murase ◽

Y. Shimamoto ◽

K. Ishibashi ◽

K. Gamo ◽

...

Keyword(s):

Ion Beam ◽

Weak Localization ◽

Impurity Scattering ◽

Surface Region ◽

Electron Interaction ◽

Physical Parameters ◽

Superconducting Transition ◽

Platinum Silicide ◽

Thin Wires ◽

Scattering Time

ABSTRACTThe low-temperature magnetoresistance of PtSi thin wires of varying width, prepared with different mask elements (Cu and Ni) in the reactive ion beam etching, has been studied, to determine the width dependence of the physical parameters in the weak localization. A drastic decrease of the magnetic impurity scattering time τs and that of the superconducting transition temperature Tc have been found for the wires prepared by Ni mask with narrowing width, which suggests that the phase coherence of diffusing electrons responsible for the weak localization and the superconductivity are strongly affected by the presence of a small amount of Ni impurities recoil implanted into the surface region of the sidewalls of wires.

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Magnetic-field-induced two- to three-dimensional transition in weak localization and weak anti-localization regimes for In2O3−x thin films

Physica E Low-dimensional Systems and Nanostructures ◽

10.1016/s1386-9477(01)00419-2 ◽

2002 ◽

Vol 12 (1-4) ◽

pp. 641-645

Author(s):

H. Kobori ◽

N. Hatta ◽

M. Kawaguchi ◽

T. Ohyama

Keyword(s):

Magnetic Field ◽

Thin Films ◽

Three Dimensional ◽

Weak Localization

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WEAK LOCALIZATION AND ELECTRON–ELECTRON INTERACTION EFFECTS IN THIN METAL WIRES AND FILMS

International Journal of Modern Physics B ◽

10.1142/s0217979210064691 ◽

2010 ◽

Vol 24 (12n13) ◽

pp. 2053-2071

Author(s):

N. Giordano

Keyword(s):

Electrical Conduction ◽

Low Temperatures ◽

Experimental Studies ◽

Weak Localization ◽

Thin Metal ◽

Electron Interaction ◽

Length Scales ◽

Disordered Metals ◽

Experimental Findings ◽

Metal Wires

A brief and selective review of experimental studies of electrical conduction in thin metal wires and films at low temperatures is given. This review will illustrate the importance of various length scales and of dimensionality in determining the properties disordered metals. A few intriguing and still unresolved experimental findings are also mentioned.

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