Sökning: "Charge Inversion"

Visar resultat 11 - 15 av 23 avhandlingar innehållade orden Charge Inversion.

1. 11. Ab initio atomistic simulation of metals and multicomponent alloys

   Författare :Fuyang Tian; Levente Vitos; Kalevi Kokko; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; high entropy alloys; ab inito;

   Sammanfattning : Ab initio theory provides a powerful tool to understand and predict the behavior of materials. This thesis contains both of these aspects. First we use ab initio alloy theory to investigate a new kind of complex alloy (high-entropy alloy). LÄS MER

3. 12. Fractal superconducting resonators for the interrogation of two-level systems

   Författare :Sebastian Erik de Graaf; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cooper-pair box; decoherence; electron spin resonance; two-level systems; atomic force microscopy; quasiparticles; near-field scanning microwave microscopy; Superconducting resonators; circuit quantum electrodynamics;

   Sammanfattning : In this thesis we use high-Q superconducting thin-film microwave resonators to interact with several types of quantum mechanical two-level systems. Such a resonator is used as the central building block in a cryogenic near-field scanning microwave microscope (NSMM) to reach a completely new regime of NSMM operation. LÄS MER

4. 13. Stability and Mobility of Localized and Extended Excitations in Nonlinear Schrödinger Models

   Författare :Michael Öster; Magnus Johansson; Sergej Flach; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Non-linear dynamics; chaos; Icke-linjär dynamik; kaos;

   Sammanfattning : This thesis is mainly concerned with the properties of some discrete nonlinear Schrödinger equations. These naturally arise in many different physical contexts as the limiting form of general dynamical lattice equations that incorporate nonlinearity and coupling. LÄS MER

5. 14. A CFT perspective on holographic correlators

   Författare :Giulia Fardelli; Agnese Bissi; Paul Heslop; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Superconformal field theories; Analytic bootstrap; Correlation functions; Quantum gravity; Theoretical Physics; Teoretisk fysik;

   Sammanfattning : Conformal symmetry is ubiquitous in physics. It emerges in a variety of situations from critical phenomena, through condensed matter systems and jets at the LHC to string theory. Conformal field theories (CFTs) describe the universal behavior underlying these very different setups. LÄS MER

7. 15. Quantum dynamics of spin active and d-wave Josephson junctions

   Författare :Jens Harro Michelsen; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Josephson effect; macroscopic quantum tunneling; high-temperature superconducvity; superconducting junctions; spin-active junctions; nonequilibrium superconductivity; Andreev bound states;

   Sammanfattning : Conventional tunnel Josephson junctions form the basic building blocks of superconducting electronics. Their operation is based on comparatively simple dynamics where the superconducting phases across the junctions is the only dynamical degree of freedom. LÄS MER