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Authenticating Pollock paintings using fractal geometry
A fractal analysis of Pollock's patterns is presented and its potential for authenticity research is discussed, triggering discussions that attributation procedures featuring subjective visual assessments should be complimented by quantitative scientific procedures. Expand
Symmetry of two-terminal nonlinear electric conduction.
A set of symmetry relations with respect to bias voltage and magnetic field for the nonlinear conductance of two-terminal electric conductors are proposed and experimentally confirmed using phase-coherent, semiconductor quantum dots. Expand
Experimental investigation of the breakdown of the Onsager-Casimir relations.
This work uses magnetoconductance fluctuation measurements of phase-coherent semiconductor billiards to quantify the contributions to the nonlinear electric conductance that are asymmetric under reversal of magnetic field and finds an unexpected asymmetry in the power spectrum. Expand
Enhanced Zeeman splitting in Ga0.25In0.75As quantum point contacts
The strength of the Zeeman splitting induced by an applied magnetic field is an important factor for the realization of spin-resolved transport in mesoscopic devices. We measure the Zeeman splittingExpand
Field-orientation dependence of the Zeeman spin splitting in (In,Ga)As quantum point contacts
We study the Zeeman spin splitting in a quantum point contact (QPC) etched into an InGaAs/InP heterostructure for three orthogonal magnetic field orientations with respect to the QPC. For the twoExpand
Symmetry of magnetoconductance fluctuations of quantum dots in the nonlinear response regime
We investigate the symmetry of magnetoconductance fluctuations of phase-coherent, two-terminal quantum dots in the nonlinear regime of transport. Specifically, we consider open, ballistic quantumExpand
Unified model of fractal conductance fluctuations for diffusive and ballistic semiconductor devices
We present an experimental comparison of magnetoconductance fluctuations measured in the ballistic, quasiballistic, and diffusive scattering regimes of semiconductor devices. In contradiction toExpand
Is it the boundaries or disorder that dominates electron transport in semiconductor `billiards'?
Semiconductor billiards are often considered as ideal systems for studying dynamical chaos in the quantum mechanical limit. In the traditional picture, once the electron's mean free path, asExpand
Probing the sensitivity of electron wave interference to disorder-induced scattering in solid-state devices
The study of electron motion in semiconductor billiards has elucidated our understanding of quantum interference and quantum chaos. The central assumption is that ionized donors generate only minorExpand
Measuring hybridization in GaInAs/InP electron billiard arrays
We study low temperature magnetoconductance fluctuations in arrays of electron billiards in an effort to quantitatively measure hybridization between array elements. In contrast to previous researchExpand