Results 51 to 60 of about 2,042,987 (291)

Terthiophene on Au(111): A scanning tunneling microscopy and spectroscopy study

open access: yesBeilstein Journal of Nanotechnology, 2011
Terthiophene (3T) molecules adsorbed on herringbone (HB) reconstructed Au(111) surfaces in the low coverage regime were investigated by means of low-temperature scanning tunneling microscopy (STM) and spectroscopy (STS) under ultra-high vacuum conditions.
Berndt Koslowski   +5 more
doaj   +1 more source

Electronic structure and superconductivity of the non-centrosymmetric Sn4As3

open access: yesNew Journal of Physics, 2020
In a superconductor that lacks inversion symmetry, the spatial part of the Cooper pair wave function has a reduced symmetry, allowing for the mixing of spin-singlet and spin-triplet Cooper pairing channels and thus providing a pathway to a non-trivial ...
C A Marques   +11 more
doaj   +1 more source

A time-domain phase diagram of metastable states in a charge ordered quantum material

open access: yesNature Communications, 2021
Tracking the evolution of non-equilibrium phases requires measurements over a wide range of timescales. Here, using a combination of femtosecond spectroscopy and scanning tunneling microscopy, the authors map out a temporal phase diagram of metastable ...
Jan Ravnik   +7 more
doaj   +1 more source

Spatial inhomogeneity of the superconducting gap and order parameter in Se0.4Te0.6 [PDF]

open access: yes, 2013
U.R.S. acknowledges support by the Alexander-von-Humboldt Foundation; furthermore, we acknowledge support by SPP1458 of the DFG through Projects No. WA2510/1-1 and No.
Schmaus, Stefan   +10 more
core   +1 more source

Functionalizing Micro‐to‐Mesoscopic Electrode Architectures for Regulating Electron Transfer Behaviors in Electrocatalysis

open access: yesAdvanced Functional Materials, EarlyView.
A systematic review is conducted to assess the influence of electrode architecture across micro‐ to mesoscopic length scales on electron‐transfer pathways in electrocatalysis. We discuss the structure‐activity relationships in electrocatalytic applications, including resource recovery and environmental remediation, and provide cost‐effective, efficient
Manshu Zhao   +6 more
wiley   +1 more source

Morphology, structure and electronic properties of CdTe surfaces studied by scanning tunneling microscopy [PDF]

open access: yes, 2011
A scanning tunneling microscope has been used to study the surface properties of CdTe crystals. Coupled with scanning tunneling spectroscopy (STS) and atomic force microscopy, the surface morphology, structure and electronic properties of CdTe and CdZnTe
EGAN, CHRISTOPHER,KIERAN
core  

Two Coexisting Pathways to Volatility in Valence‐Change Memory Devices

open access: yesAdvanced Functional Materials, EarlyView.
Volatile VCM‐type memristive devices exhibit current relaxation after resistive switching, but their microscopic origin remains debated. Using pulsed measurements and a new Tunnel‐DLTS approach on Pt/SrTiO3/Nb:SrTiO3 devices, we show that post‐SET volatility is predominantly ionic, while electronic contributions—arising from quasi‐Fermi‐level ...
Johannes Hellwig   +3 more
wiley   +1 more source

Principles and Application of Heterodyne Scanning Tunnelling Spectroscopy [PDF]

open access: yesScientific Reports, 2014
Detection of the extremely weak signals in spectroscopy over an extremely wide frequency region is central to diverse sciences, including materials science, biology, astronomy and chemistry. Here we show a new type of atomic-scale spectroscopy, heterodyne scanning tunnelling spectroscopy (HSTS), which is based on the innovative application of the ...
Matsuyama, Eiji   +5 more
openaire   +2 more sources

Proximity Effect between Two Superconductors Spatially Resolved by Scanning Tunneling Spectroscopy

open access: yesPhysical Review X, 2014
We present a combined experimental and theoretical study of the proximity effect in an atomic-scale controlled junction between two different superconductors.
V. Cherkez   +7 more
doaj   +1 more source

Investigation of individual donors in silicon at cryogenic temperature with atomic-scale resolution for atomic electronic devices [PDF]

open access: yes, 2015
There is an urgent need for characterisation of group V donors in silicon necessary for the development of quantum information processing (QIP) devices, and my PhD work has been contributed towards this objective.
Sinthiptharakoon, K
core  

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