Elastic And Inelastic Scanning Tunneling Spectroscopy On Iron Based Superconductors
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| Author | : Jandke, Jasmin Maria |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 242 |
| Release | : 2019-05-02 |
| Genre | : 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 |
| Total Pages | : 0 |
| Release | : 2020-10-09 |
| Genre | : |
| 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 | : Zhang, Lei |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 116 |
| Release | : 2019-07-05 |
| Genre | : Science |
| ISBN | : 386644950X |
| Author | : Gozlinski, Thomas |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 208 |
| Release | : 2023-03-24 |
| Genre | : 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 | : Skolaut, Julian |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 164 |
| Release | : 2023-09-14 |
| Genre | : |
| 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 | : Wildermuth, Matthias Micha |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 160 |
| Release | : 2023-09-11 |
| Genre | : |
| 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 | : Rai, Vibhuti Narayan |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 150 |
| Release | : 2022-10-04 |
| Genre | : 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.
| Author | : Edelmann, Kevin |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 160 |
| Release | : 2019-07-03 |
| Genre | : 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 | : Bilmes, Alexander |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 128 |
| Release | : 2019-12-09 |
| Genre | : Science |
| ISBN | : 3731509679 |
| Author | : Schneider, Andre |
| Publisher | : KIT Scientific Publishing |
| Total Pages | : 170 |
| Release | : 2021-06-04 |
| Genre | : 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.
