Results 51 to 60 of about 1,625,840 (288)

Scanning tunneling microscopy of a wheat seed storage protein reveals details of an unusual supersecondary structure [PDF]

, 1991
Scanning tunneling microscopy has been used to demonstrate that a spiral structure based on -reverse turns is adopted by the repeat sequences present in a group of wheat gluten proteins.
Ianson, K. J., Tatham, A. S., Belton, P. S., Shewry, P. R., Carr, H. J., Field, J. M., McMaster, T. C., Morris, V. J., Miles, M. J.   +8 more
core   +1 more source

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

Advanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand, Nuno Estrócio, Ji S. Kim, Babak Bakhit, Marian C. Istrate, Corneliu Ghica, Tiago Rebelo, Nives Strkalj, Abin Varghese, Bernardo Almeida, Luís S. Marques, Bipin Rajendran, Judith L. MacManus‐Driscoll, José P. B. Silva   +13 more
wiley   +1 more source

Imaging electronic states on topological semimetals using scanning tunneling microscopy

New Journal of Physics, 2016
Following the intense studies on topological insulators, significant efforts have recently been devoted to the search for gapless topological systems. These materials not only broaden the topological classification of matter but also provide a condensed ...
András Gyenis, Hiroyuki Inoue, Sangjun Jeon, Brian B Zhou, Benjamin E Feldman, Zhijun Wang, Jian Li, Shan Jiang, Quinn D Gibson, Satya K Kushwaha, Jason W Krizan, Ni Ni, Robert J Cava, B Andrei Bernevig, Ali Yazdani   +14 more
doaj   +1 more source

Towards Laterally Resolved Ferromagnetic Resonance with Spin-Polarized Scanning Tunneling Microscopy

Nanomaterials, 2019
We used a homodyne detection to investigate the gyration of magnetic vortex cores in Fe islands on W(110) with spin-polarized scanning tunneling microscopy at liquid helium temperatures.
Marie Hervé, Moritz Peter, Timofey Balashov, Wulf Wulfhekel   +3 more
doaj   +1 more source

Electrochemical Scanning Tunneling Microscopy

Analytical Sciences, 1994
An ECSTM apparatus with an ideal tip using a homemade SSX-1A STM instrument has been constructed. STM and ECSTM tips were made by electrochemical etching and insulating with paraffin, silicon rubber or epoxy resin under an optical microscope. In situ imaging of highly oriented pyrolytic graphite (HOPG) shows that the leakage current passing through the
openaire   +2 more sources

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

, 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  

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

Advanced 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, Jiaojiao Zhang, Shideng Yuan, Xinmeng Yu, Keming Wan, Xiaoguang Duan, Zhining Wang   +6 more
wiley   +1 more source

Spin-polarized scanning tunneling microscopy with quantitative insights into magnetic probes

Nano Convergence, 2017
Spin-polarized scanning tunneling microscopy and spectroscopy (spin-STM/S) have been successfully applied to magnetic characterizations of individual nanostructures. Spin-STM/S is often performed in magnetic fields of up to some Tesla, which may strongly
Soo-hyon Phark, Dirk Sander
doaj   +1 more source

Two Coexisting Pathways to Volatility in Valence‐Change Memory Devices

Advanced 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, Clemens Wittberg, Dimitrios Spithouris, Regina Dittmann   +3 more
wiley   +1 more source

Spin-polarized and possible pseudospin-polarized scanning tunneling microscopy in kagome metal FeSn

Communications Physics, 2022
Kagome Lattices provide a platform for studying competing quantum ground states. Lee and colleagues observed the pseudospin texture of FeSn in real space, deepening our understanding of the lattice symmetry-preserving tunneling process in Dirac materials.
Si-Hong Lee, Youngjae Kim, Beopgil Cho, Jaemun Park, Min-Seok Kim, Kidong Park, Hoyeon Jeon, Minkyung Jung, Keeseong Park, JaeDong Lee, Jungpil Seo   +10 more
doaj   +1 more source