Elastic and Inelastic Scanning Tunneling Spectroscopy on Iron-Based Superconductors

Elastic and Inelastic Scanning Tunneling Spectroscopy on Iron-Based Superconductors PDF Author: Jandke, Jasmin Maria
Publisher: KIT Scientific Publishing
ISBN: 3731507471
Category :
Languages : en
Pages : 244

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Elastic and Inelastic Scanning Tunneling Spectroscopy on Iron-Based Superconductors

Elastic and Inelastic Scanning Tunneling Spectroscopy on Iron-Based Superconductors PDF Author: Jandke, Jasmin Maria
Publisher: KIT Scientific Publishing
ISBN: 3731507471
Category :
Languages : en
Pages : 244

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Elastic and Inelastic Scanning Tunneling Spectroscopy on Iron-Based Superconductors

Elastic and Inelastic Scanning Tunneling Spectroscopy on Iron-Based Superconductors PDF Author: Jasmin Maria Jandke
Publisher: Saint Philip Street Press
ISBN: 9781013283178
Category :
Languages : en
Pages : 236

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Book Description
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.

Schackert, Michael PeterScanning Tunneling Spectroscopy on Electron-Boson Interactions in Superconductors

Schackert, Michael PeterScanning Tunneling Spectroscopy on Electron-Boson Interactions in Superconductors PDF Author: Schackert, Michael Peter
Publisher: KIT Scientific Publishing
ISBN: 3731502380
Category : Physics
Languages : en
Pages : 148

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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.

Sub-Kelvin scanning tunneling microscopy on magnetic molecules

Sub-Kelvin scanning tunneling microscopy on magnetic molecules PDF Author: Zhang, Lei
Publisher: KIT Scientific Publishing
ISBN: 386644950X
Category : Science
Languages : en
Pages : 116

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Local Probing of a Superconductor’s Quasiparticles and Bosonic Excitations with a Scanning Tunnelling Microscope

Local Probing of a Superconductor’s Quasiparticles and Bosonic Excitations with a Scanning Tunnelling Microscope PDF Author: Gozlinski, Thomas
Publisher: KIT Scientific Publishing
ISBN: 3731512793
Category : Science
Languages : en
Pages : 208

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Book Description
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.

Molecular Motor Based on Single Chiral Tripodal Molecules Studied with STM

Molecular Motor Based on Single Chiral Tripodal Molecules Studied with STM PDF Author: Skolaut, Julian
Publisher: KIT Scientific Publishing
ISBN: 3731512475
Category :
Languages : en
Pages : 164

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Book Description
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.

Quantum Tunneling of Josephson Vortices in High-Impedance Long Junctions

Quantum Tunneling of Josephson Vortices in High-Impedance Long Junctions PDF Author: Wildermuth, Matthias Micha
Publisher: KIT Scientific Publishing
ISBN: 373151303X
Category :
Languages : en
Pages : 160

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Book Description
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.

Light Emission from Single Self-decoupled Molecules in a Scanning Tunnelling Microscope

Light Emission from Single Self-decoupled Molecules in a Scanning Tunnelling Microscope PDF Author: Rai, Vibhuti Narayan
Publisher: KIT Scientific Publishing
ISBN: 3731512017
Category : Science
Languages : en
Pages : 150

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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.

Electroluminescence from Plasmonic Excitations in a Scanning Tunnelling Microscope

Electroluminescence from Plasmonic Excitations in a Scanning Tunnelling Microscope PDF Author: Edelmann, Kevin
Publisher: KIT Scientific Publishing
ISBN: 3731509237
Category : Science
Languages : en
Pages : 160

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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.

Resolving locations of defects in superconducting transmon qubits

Resolving locations of defects in superconducting transmon qubits PDF Author: Bilmes, Alexander
Publisher: KIT Scientific Publishing
ISBN: 3731509679
Category : Science
Languages : en
Pages : 128

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