Fedor Pikus

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Papers by Fedor Pikus

Model-based design verification

Single-electron charging and Coulomb interaction in InAs self-assembled quantum dot arrays

Physical Review B

Sequential single-electron charging is observed in InAs Self-Assembled Quantum Dots using capacit... more Sequential single-electron charging is observed in InAs Self-Assembled Quantum Dots using capacitance spectroscopy. In this system, the Coulomb energy is smaller than the inter-level energy spacings due to the quantum confinement and both effects can be separately identified. A theoretical model is proposed for this system and the capacitance experiments were devised in order to experimentally observe the effects of Coulomb interaction between electrons on the dots. The effects of inter-and intra-dot Coulomb interaction have been observed in the capacitance spectra. A good agreement between the proposed model and experiment is achieved.

format_quoteCapacitance-voltage characteristics exhibit split peaks due to Coulomb interactions within dots, crucial for understanding dot behavior.format_quote

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Coulomb Gap in the Tunneling Density of States of Two-Dimensional Electron Liquid in a Strong Magnetic Field

International Journal of Modern Physics B

A model of a classical electron liquid without external disorder is applied to two-dimensional el... more A model of a classical electron liquid without external disorder is applied to two-dimensional electrons in a strong magnetic field. Computer modeling gives a quantitative explanation for the recently observed gap in the tunneling current of a double quantum well structure. We find that both the Coulomb gap in the single-well density of states and the correlation of electron motion in the two wells are responsible for the tunneling gap. We show that the classical liquid model provides an accurate description of the low temperature compressibility obtained from magnetocapacitance experiment.

Topological Pattern Matching

Hybrid hotspot detection

Critical Area Deterministic Sampling

Properties of Paired Quantum Hall States at $ nu=2$

Eprint Arxiv Cond Mat 9606107, Jun 1, 1996

The energetic properties of a paired quantum Hall state at Landau level filling ν = 2 are investi... more The energetic properties of a paired quantum Hall state at Landau level filling ν = 2 are investigated using variational Monte Carlo techniques. Pairing is found to be energetically favorable in small magnetic fields because it introduces correlations between up and down spins that are absent in the traditional ν = 2 state. We find that pairing survives extrapolation to the thermodynamic limit.

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Use of lithography simulation for the calibration of equation-based design rule checks

Proceedings of the 46th Annual Design Automation Conference, Jul 26, 2009

Designers using one-dimension measurements in nanometer designs can&amp;amp;amp;amp;amp;amp;a... more Designers using one-dimension measurements in nanometer designs can&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#x27;t readily identify features prone to excessive variation during processing. Process simulation provides high resolution checking, but requires significant computing resources. Equation-based design rule checking (eqDRC) offers the DRC performance with capture of complex process issues using multi-dimensional equations. One challenge to adopting eqDRC is the definition and calibration of the equations. We

Model-based design verification

Simultaneous Multi-Layer Fill Generation

Spectral variation of the mobility of photoexcited electrons in pure GaAs

Soviet Journal of Experimental and Theoretical Physics Letters, Oct 1, 1991

Method For Improving Circuit Design Robustness

Property-Based Classification In Electronic Design Automation

Concealment of information in electronic design automation

Non-Fermi-liquid behavior of two-dimensional electron gas with disorder

Solid State Commun, 1995

The problem of strongly correlated disordered two-dimensional electron gas on a lattice is studie... more The problem of strongly correlated disordered two-dimensional electron gas on a lattice is studied by computer modeling. The long-range Coulomb interaction is assumed. It is proved that for zero hopping amplitude J the lowest residue of the one-particle Green function is zero. It is shown by quantum Monte-Carlo computations that the Coulomb gap in the one-particle density of states exists and the lowest residues remain small for J > 0 and independent of J at the same range of J where, according to other criteria, many-particle wave functions become delocalized.

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Analysis and optimization of manufacturing yield improvements

Layout-Versus-Schematic Analysis For Symmetric Circuits

Quantum Melting on a Lattice and a Delocalization Transition

Strongly Coupled Coulomb Systems, 2000

We consider 2d gas of spinless fermions with the Coulomb interaction on a lattice at T = 0 and at... more We consider 2d gas of spinless fermions with the Coulomb interaction on a lattice at T = 0 and at different values of the hopping amplitude J. At small J electrons form a periodic structure. At filling factor ν = 1/6 this structure melts at J as low as 0.02-0.03 in units of the nearest-neighbor Coulomb energy. We argue that this transition is connected to the dielectric-metal or dielectricsuperconductor transitions. To demonstrate this point we perform computer modeling of the systems 6 × 6 with 6 and 7 electrons and 6 × 12 with 12 electrons. By sweeping J we compute simultaneously persistent current and structural characteristics of the electron distribution.

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Increase in the low-temperature mobility of 2D electrons by constant exposure to light

Optimization Of Geometry Pattern Density

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