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Spintronics With Individual Metal Organic Molecules
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Book Synopsis Spintronics with Individual Metal-organic Molecules by : Stefan Schmaus
Download or read book Spintronics with Individual Metal-organic Molecules written by Stefan Schmaus and published by KIT Scientific Publishing. This book was released on 2014-08-24 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work two ideas of using individual metal organic molecules in applications for data storage are presented. On the one hand, metal-free phthalocyanine is used to form a GMR contact consisting of one single molecule leading to the world smallest magnetic sensor. On the other hand, chromium acetylacetonate was used to study the properties of magnetic molecules adsorbed on surfaces in order to build magnetic bits for date storage.
Book Synopsis Organic Spintronics by : Zeev Valy Vardeny
Download or read book Organic Spintronics written by Zeev Valy Vardeny and published by CRC Press. This book was released on 2010-04-09 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Major development efforts in organic materials research has grown for an array of applications. Organic spintronics, in particular, has flourished in the area of organic magneto-transport. Reflecting the main avenues of advancement in this arena, this volume explores spin injection and manipulation in organic spin valves, the magnetic field effect in organic light-emitting diodes (OLEDs), the spin transport effect in relation to spin manipulation, organic magnets as spin injection electrodes in organic spintronics devices, the coherent control of spins in organic devices using the technique of electronically detected magnetic resonance, and the possibility of using organic spin valves as sensors.
Book Synopsis Magnetoelectric coupling at metal surfaces by : Gerhard, Lukas Leander
Download or read book Magnetoelectric coupling at metal surfaces written by Gerhard, Lukas Leander and published by KIT Scientific Publishing. This book was released on 2013-12-24 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nowadays, the development of magnetic data storage devices technique faces fundamental limitations which lead to a slow-down of the increase of areal storage density. Therefore, magnetoelectric coupling which allows to change the magnetic state of matter by means of an electric field attracted significant interest. In this work, scanning tunneling microscopy was used to show for the first time that magnetic information can be written on the nanometer scale by the application of electric fields.
Book Synopsis Nonlinear Effects in Superconducting Quantum Interference Meta-Atoms by : Jung, Philipp
Download or read book Nonlinear Effects in Superconducting Quantum Interference Meta-Atoms written by Jung, Philipp and published by KIT Scientific Publishing. This book was released on 2015-01-19 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis deals with the nonlinear aspects of superconducting quantum interference devices (SQUIDs) as magnetic meta-atoms. Such meta-atoms are usually resonant structures that constitute the basic building blocks of a metamaterial with the purpose of giving the material unconventional magnetic properties. Due to their intrinsic nonlinearity, SQUIDs exhibit a number of phenomena such as frequency tunability and multi-stability that make them attractive as controllable meta-atoms.
Book Synopsis Electroluminescence from Plasmonic Excitations in a Scanning Tunnelling Microscope by : Edelmann, Kevin
Download or read book Electroluminescence from Plasmonic Excitations in a Scanning Tunnelling Microscope written by Edelmann, Kevin and published by KIT Scientific Publishing. This book was released on 2019-07-03 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents the design and commissioning of a new low-temperature Scanning Tunnelling Microscope equipped with an innovative light collection setup using an integrated, micro-fabricated mirror tip. Commissioning experiments demonstrate the capabilities of this new instrument and reproduce known effects regarding gap plasmons on noble-metal surfaces. Furthermore, different contrasts in the plasmon-mediated light emission from Cobalt nano-islands on a Copper (111) substrate are reported.
Book Synopsis Investigation of Magnetic Adatoms with Scanning Tunneling Techniques by : Maerkl, Junji Tobias
Download or read book Investigation of Magnetic Adatoms with Scanning Tunneling Techniques written by Maerkl, Junji Tobias and published by KIT Scientific Publishing. This book was released on 2016-01-20 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, magnetic atoms on surfaces are studied with low-temperature scanning tunneling microscopy. Motivated by the idea to use single atoms as magnetic bits, the factors that allow or prevent long-term stability of their magnetic moments are investigated. Lifetimes of up to several minutes can be achieved for the magnetic moments of holmium atoms on a Pt(111) surface, resulting from the combined symmetries of the system. Corresponding theoretical calculations are presented and evaluated.
Book Synopsis Quantum Sensing Experiments with Superconducting Qubits by : Schneider, Andre
Download or read book Quantum Sensing Experiments with Superconducting Qubits written by Schneider, Andre and published by KIT Scientific Publishing. This book was released on 2021-06-04 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum sensing is a vast and emerging field enabling in-situ studies of quantum systems and hence the development of quantum hybrid systems. This work creates the fundament of direct superconducting-magnetic hybrid systems by developing a local microwave sensing scheme and studying the influence of a static magnetic field on a superconducting qubit. Finally, a proof-of-principle hybrid system is demonstrated, which opens the path towards superconducting-magnetic quantum circuits.
Book Synopsis Adding nonlinearity to an electromagnetic-magnonic quantum hybrid device by : Pfirrmann, Marco
Download or read book Adding nonlinearity to an electromagnetic-magnonic quantum hybrid device written by Pfirrmann, Marco and published by KIT Scientific Publishing. This book was released on 2020-10-05 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, hybrid systems based on yttrium-iron-garnet (YIG), three dimensional microwave cavity resonators, and superconducting transmon qubits, are investigated by continuous wave and pulsed microwave spectroscopy. Limitations to the magnetic linewidth in the quantum regime are identified and coherent exchange between a magnon and a superconducting qubit are demonstrated. Finally, a first step towards a strongly coupled hybrid system containing all three components is demonstrated.
Book Synopsis Hybrid quantum system based on rare earth doped crystals by : Probst, Sebastian
Download or read book Hybrid quantum system based on rare earth doped crystals written by Probst, Sebastian and published by KIT Scientific Publishing. This book was released on 2016-09-05 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hybrid quantum circuits interfacing rare earth spin ensembles with microwave resonators are a promising approach for application as coherent quantum memory and frequency converter. In this thesis, hybrid circuits based on Er and Nd ions doped into Y?SiO? and YAlO? crystals are investigated by optical and on-chip microwave spectroscopy. Coherent strong coupling between the microwave resonator and spin ensemble as well as a multimode memory for weak coherent microwave pulses are demonstrated.
Book Synopsis Schackert, Michael PeterScanning Tunneling Spectroscopy on Electron-Boson Interactions in Superconductors by : Schackert, Michael Peter
Download or read book Schackert, Michael PeterScanning Tunneling Spectroscopy on Electron-Boson Interactions in Superconductors written by Schackert, Michael Peter and published by KIT Scientific Publishing. This book was released on 2015-03-23 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work describes the experimental study of electron-boson interactions in superconductors by means of inelastic electron tunneling spectroscopy performed with a scanning tunneling microscope (STM) at temperatures below 1 K. This new approach allows the direct measurement of the Eliashberg function of conventional superconductors as demonstrated on lead (Pb) and niobium (Nb). Preparative experiments on unconventional iron-pnictides are presented in the end.
Book Synopsis Resolving locations of defects in superconducting transmon qubits by : Bilmes, Alexander
Download or read book Resolving locations of defects in superconducting transmon qubits written by Bilmes, Alexander and published by KIT Scientific Publishing. This book was released on 2019-12-09 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Local Probing of a Superconductor’s Quasiparticles and Bosonic Excitations with a Scanning Tunnelling Microscope by : Gozlinski, Thomas
Download or read book Local Probing of a Superconductor’s Quasiparticles and Bosonic Excitations with a Scanning Tunnelling Microscope written by Gozlinski, Thomas and published by KIT Scientific Publishing. This book was released on 2023-03-24 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Complementary to scattering techniques, scanning tunnelling microscopy provides atomic-scale real space information about a material's electronic state of matter. State-of-the-art designs of a scanning tunnelling microscope (STM) allow measurements at millikelvin temperatures with unprecedented energy resolution. Therefore, this instrument excels in probing the superconducting state at low temperatures and especially its local quasiparticle excitations as well as bosonic degrees of freedom.
Book Synopsis Elastic and Inelastic Scanning Tunneling Spectroscopy on Iron-Based Superconductors by : Jandke, Jasmin Maria
Download or read book Elastic and Inelastic Scanning Tunneling Spectroscopy on Iron-Based Superconductors written by Jandke, Jasmin Maria and published by KIT Scientific Publishing. This book was released on 2019-05-02 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Within this work, the pairing mechanism of conventional (Pb) and unconventional superconductors (SrFe2(As1-xPx )2 , FeSe, FeSe/STO) was investigated experimentally by means of elastic and inelastic tunneling spectroscopy at temperatures down to 30 mK. The distinction between elastic and inelastic contributions to tunneling data was elaborated. The results help to identify conventional (phonon-mediated) and unconventional (e.g. spin-?uctuation mediated) superconductivity.
Book Synopsis Quantum Tunneling of Josephson Vortices in High-Impedance Long Junctions by : Wildermuth, Matthias Micha
Download or read book Quantum Tunneling of Josephson Vortices in High-Impedance Long Junctions written by Wildermuth, Matthias Micha and published by KIT Scientific Publishing. This book was released on 2023-09-11 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last decades, superconducting devices have emerged as a promising platform for quantum technologies, including quantum sensing and quantum computing. Their key elements are Josephson junctions, which allow for coherent supercurrent tunneling between two weakly linked superconductors. If such a junction is extended in one direction to a long junction, the superconducting phase difference can vary in space and time and may allow for quantized phase windings that drive supercurrent vortices.
Book Synopsis Granular aluminium superinductors by : Grünhaupt, Lukas
Download or read book Granular aluminium superinductors written by Grünhaupt, Lukas and published by KIT Scientific Publishing. This book was released on 2019-10-24 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis STM Characterization of Phenylene-Ethynylene Oligomers on Au(111) and their Integration into Carbon Nanotube Nanogaps by : Thiele, Cornelius
Download or read book STM Characterization of Phenylene-Ethynylene Oligomers on Au(111) and their Integration into Carbon Nanotube Nanogaps written by Thiele, Cornelius and published by KIT Scientific Publishing. This book was released on 2014-08-05 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular electronics requires both profound knowledge of a molecule's structure and functionality on a surface and controlled positioning between electrodes with nanometer-sized gaps. In the first part of this work, a detailed scanning tunneling microscope study of two variants of oligo(phenylene ethynylene) molecules is presented. In the second part, methods of fabricating carbon nanotube nanogap electrodes as direct contacts to these molecules are explored.
Book Synopsis Towards magnetic resonance in scanning tunneling microscopy using heterodyne detection by : Peter, Moritz
Download or read book Towards magnetic resonance in scanning tunneling microscopy using heterodyne detection written by Peter, Moritz and published by KIT Scientific Publishing. This book was released on 2015-09-18 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present work introduces a new concept for magnetic resonance measurements in the GHz regime inside a scanning tunneling microscope. It is based on heterodyne detection in a spin-polarized tunneling barrier. The experimental requirements, including a new method to suppress transmission effects, are explained. Measurements on three model systems which were studied to validate the new technique are presented and compared to simulations.
