Sub-Kelvin scanning tunneling microscopy on magnetic molecules PDF Download
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Author: Zhang, Lei
Publisher: KIT Scientific Publishing
ISBN: 386644950X
Category : Science
Languages : en
Pages : 116
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Book Description
Author: Zhang, Lei
Publisher: KIT Scientific Publishing
ISBN: 386644950X
Category : Science
Languages : en
Pages : 116
Get Book Here
Book Description
Author: Maerkl, Junji Tobias
Publisher: KIT Scientific Publishing
ISBN: 3731504359
Category : Physics
Languages : en
Pages : 114
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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.
Author: Jandke, Jasmin Maria
Publisher: KIT Scientific Publishing
ISBN: 3731507471
Category : Physics
Languages : en
Pages : 242
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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.
Author: Pfirrmann, Marco
Publisher: KIT Scientific Publishing
ISBN: 3731510030
Category : Science
Languages : en
Pages : 136
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Book Description
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: Schackert, Michael Peter
Publisher: KIT Scientific Publishing
ISBN: 3731502380
Category : Physics
Languages : en
Pages : 148
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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.
Author: Rai, Vibhuti Narayan
Publisher: KIT Scientific Publishing
ISBN: 3731512017
Category : Science
Languages : en
Pages : 150
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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.
Author: Schneider, Andre
Publisher: KIT Scientific Publishing
ISBN: 3731510324
Category : Science
Languages : en
Pages : 170
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Book Description
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: 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.
Author: Bilmes, Alexander
Publisher: KIT Scientific Publishing
ISBN: 3731509679
Category : Science
Languages : en
Pages : 128
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Book Description
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.
