Author: Zhang, Lei
Publisher: KIT Scientific Publishing
ISBN: 386644950X
Category : Science
Languages : en
Pages : 116
Book Description
Sub-Kelvin scanning tunneling microscopy on magnetic molecules
Author: Zhang, Lei
Publisher: KIT Scientific Publishing
ISBN: 386644950X
Category : Science
Languages : en
Pages : 116
Book Description
Publisher: KIT Scientific Publishing
ISBN: 386644950X
Category : Science
Languages : en
Pages : 116
Book Description
Sub-Kelvin Scanning Tunneling Microscopy on Magnetic Molecules
Author: Lei Zhang
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Local Investigation of Single Magnetic Molecules with Scanning Tunneling Microscopy
Author: Chen, Jinjie
Publisher: KIT Scientific Publishing
ISBN: 3731508192
Category : Molecules
Languages : en
Pages : 146
Book Description
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.
Publisher: KIT Scientific Publishing
ISBN: 3731508192
Category : Molecules
Languages : en
Pages : 146
Book Description
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
Author: Maerkl, Junji Tobias
Publisher: KIT Scientific Publishing
ISBN: 3731504359
Category : Physics
Languages : en
Pages : 114
Book Description
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.
Publisher: KIT Scientific Publishing
ISBN: 3731504359
Category : Physics
Languages : en
Pages : 114
Book Description
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
Author: Rai, Vibhuti Narayan
Publisher: KIT Scientific Publishing
ISBN: 3731512017
Category : Science
Languages : en
Pages : 150
Book Description
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.
Publisher: KIT Scientific Publishing
ISBN: 3731512017
Category : Science
Languages : en
Pages : 150
Book Description
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.
Molecular Motor Based on Single Chiral Tripodal Molecules Studied with STM
Author: Skolaut, Julian
Publisher: KIT Scientific Publishing
ISBN: 3731512475
Category :
Languages : en
Pages : 164
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.
Publisher: KIT Scientific Publishing
ISBN: 3731512475
Category :
Languages : en
Pages : 164
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.
Elastic and Inelastic Scanning Tunneling Spectroscopy on Iron-Based Superconductors
Author: Jandke, Jasmin Maria
Publisher: KIT Scientific Publishing
ISBN: 3731507471
Category : Physics
Languages : en
Pages : 242
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.
Publisher: KIT Scientific Publishing
ISBN: 3731507471
Category : Physics
Languages : en
Pages : 242
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.
Local Probing of a Superconductor’s Quasiparticles and Bosonic Excitations with a Scanning Tunnelling Microscope
Author: Gozlinski, Thomas
Publisher: KIT Scientific Publishing
ISBN: 3731512793
Category : Science
Languages : en
Pages : 208
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.
Publisher: KIT Scientific Publishing
ISBN: 3731512793
Category : Science
Languages : en
Pages : 208
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.
Schackert, Michael PeterScanning Tunneling Spectroscopy on Electron-Boson Interactions in Superconductors
Author: Schackert, Michael Peter
Publisher: KIT Scientific Publishing
ISBN: 3731502380
Category : Physics
Languages : en
Pages : 148
Book Description
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.
Publisher: KIT Scientific Publishing
ISBN: 3731502380
Category : Physics
Languages : en
Pages : 148
Book Description
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.
Granular aluminium superinductors
Author: Grünhaupt, Lukas
Publisher: KIT Scientific Publishing
ISBN: 3731509563
Category : Science
Languages : en
Pages : 168
Book Description
Publisher: KIT Scientific Publishing
ISBN: 3731509563
Category : Science
Languages : en
Pages : 168
Book Description