Scanning Tunneling Spectroscopy On Electron Boson Interactions In Superconductors

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Schackert Michael Peterscanning Tunneling Spectroscopy On Electron Boson Interactions In Superconductors

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Author : Schackert, Michael Peter
language : en
Publisher: KIT Scientific Publishing
Release Date : 2015-03-23

Schackert Michael Peterscanning Tunneling Spectroscopy On Electron Boson Interactions In Superconductors written by Schackert, Michael Peter and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03-23 with Physics categories.

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.

Scanning Tunneling Spectroscopy On Electron Boson Interactions In Superconductors

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Author : Michael Peter Schackert
language : en
Publisher:
Release Date : 2020-10-09

Scanning Tunneling Spectroscopy On Electron Boson Interactions In Superconductors written by Michael Peter Schackert and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-09 with Science categories.

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. 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.

Elastic And Inelastic Scanning Tunneling Spectroscopy On Iron Based Superconductors

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Author : Jandke, Jasmin Maria
language : en
Publisher: KIT Scientific Publishing
Release Date : 2019-05-02

Elastic And Inelastic Scanning Tunneling Spectroscopy On Iron Based Superconductors written by Jandke, Jasmin Maria and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-05-02 with Physics categories.

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.

Local Probing Of A Superconductor S Quasiparticles And Bosonic Excitations With A Scanning Tunnelling Microscope

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Author : Gozlinski, Thomas
language : en
Publisher: KIT Scientific Publishing
Release Date : 2023-03-24

Local Probing Of A Superconductor S Quasiparticles And Bosonic Excitations With A Scanning Tunnelling Microscope written by Gozlinski, Thomas and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-03-24 with Science categories.

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.

Towards Magnetic Resonance In Scanning Tunneling Microscopy Using Heterodyne Detection

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Author : Peter, Moritz
language : en
Publisher: KIT Scientific Publishing
Release Date : 2015-09-18

Towards Magnetic Resonance In Scanning Tunneling Microscopy Using Heterodyne Detection written by Peter, Moritz and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-09-18 with Physics categories.

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.

Sub Kelvin Scanning Tunneling Microscopy On Magnetic Molecules

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Author : Zhang, Lei
language : en
Publisher: KIT Scientific Publishing
Release Date : 2019-07-05

Sub Kelvin Scanning Tunneling Microscopy On Magnetic Molecules written by Zhang, Lei and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-07-05 with Science categories.

Local Investigation Of Single Magnetic Molecules With Scanning Tunneling Microscopy

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Author : Chen, Jinjie
language : en
Publisher: KIT Scientific Publishing
Release Date : 2019-01-18

Local Investigation Of Single Magnetic Molecules With Scanning Tunneling Microscopy written by Chen, Jinjie and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-01-18 with Molecules categories.

We worked on different magnetic molecules containing 3d and 4f magnetic centers. Their growth on metallic surfaces, topographies, spin states, magnetic properties and electron transport were locally investigated by using scanning tunneling microscopy (STM) at temperatures down to 30mK. The main achievement of this dissertation reveals the abrupt switching of crystal fields during formation of molecular contacts.

Investigation Of Magnetic Adatoms With Scanning Tunneling Techniques

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Author : Maerkl, Junji Tobias
language : en
Publisher: KIT Scientific Publishing
Release Date : 2016-01-20

Investigation Of Magnetic Adatoms With Scanning Tunneling Techniques written by Maerkl, Junji Tobias and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-01-20 with Physics categories.

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.

Light Emission From Single Self Decoupled Molecules In A Scanning Tunnelling Microscope

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Author : Rai, Vibhuti Narayan
language : en
Publisher: KIT Scientific Publishing
Release Date : 2022-10-04

Light Emission From Single Self Decoupled Molecules In A Scanning Tunnelling Microscope written by Rai, Vibhuti Narayan and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-10-04 with Science categories.

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

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Author : Edelmann, Kevin
language : en
Publisher: KIT Scientific Publishing
Release Date : 2019-07-03

Electroluminescence From Plasmonic Excitations In A Scanning Tunnelling Microscope written by Edelmann, Kevin and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-07-03 with Science categories.

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.