Author : Jandke, Jasmin Maria
Publisher : KIT Scientific Publishing
Page : 242 pages
File Size : 23,16 MB
Release : 2019-05-02
Category : Physics
ISBN : 3731507471
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.
Author : Jasmin Maria Jandke
Publisher : Saint Philip Street Press
Page : 0 pages
File Size : 34,90 MB
Release : 2020-10-09
Category :
ISBN : 9781013283161
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. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.
Author : Schneider, Andre
Publisher : KIT Scientific Publishing
Page : 170 pages
File Size : 32,60 MB
Release : 2021-06-04
Category : Science
ISBN : 3731510324
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.
Author : Wildermuth, Matthias Micha
Publisher : KIT Scientific Publishing
Page : 160 pages
File Size : 35,51 MB
Release : 2023-09-11
Category :
ISBN : 373151303X
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.
Author : Zhang, Lei
Publisher : KIT Scientific Publishing
Page : 116 pages
File Size : 49,51 MB
Release : 2019-07-05
Category : Science
ISBN : 386644950X
Author : Edelmann, Kevin
Publisher : KIT Scientific Publishing
Page : 160 pages
File Size : 17,13 MB
Release : 2019-07-03
Category : Science
ISBN : 3731509237
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.
Author : Gozlinski, Thomas
Publisher : KIT Scientific Publishing
Page : 208 pages
File Size : 33,3 MB
Release : 2023-03-24
Category : Science
ISBN : 3731512793
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.
Author : Pfirrmann, Marco
Publisher : KIT Scientific Publishing
Page : 136 pages
File Size : 11,45 MB
Release : 2020-10-05
Category : Science
ISBN : 3731510030
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.
Author : Skolaut, Julian
Publisher : KIT Scientific Publishing
Page : 164 pages
File Size : 42,27 MB
Release : 2023-09-14
Category :
ISBN : 3731512475
This work presents a single molecular motor driven by the current in an STM. Its chiral functional group is supposed to perform a rotation in a preferred direction, proven by Binomial tests to be statistically significant. The rotation is proposedly driven by the chiral-induced spin selectivity effect (CISS). However, the studies of the rotation on the dependence on the lateral tip position, voltage and current indicate that he CISS is unlikely to cause the preferred rotation direction.
Author : Rai, Vibhuti Narayan
Publisher : KIT Scientific Publishing
Page : 150 pages
File Size : 11,64 MB
Release : 2022-10-04
Category : Science
ISBN : 3731512017
In this work, a clear pathway is presented to achieve well-defined electronically decoupled chromophores from metallic leads without requiring additional insulating layers. To study such self-decoupled molecules, STM equipped with an efficient light detection setup has been used. Results show that the chromophores mounted on tripodal molecular platforms adsorbed on a gold surface present well-defined and efficient electroluminescence down to the single-molecule level.
