Results 41 to 50 of about 2,191,569 (294)

Scanning tunneling spectroscopy of transition-metal-doped GaSb [PDF]

, 1999
©1999 The American Physical Society. This work was supported by DGES (PB96-0639) and by CICYT (ESP98-1340) (MAT98-1306E).V- and Ru-doped GaSb crystals have been investigated by scanning tunneling spectroscopy in a combined scanning electron microscope ...
Piqueras De Noriega, Francisco Javier, Dieguez, E., Hidalgo Alcalde, Pedro, Dutta, P: S., Méndez Martín, María Bianchi   +4 more
core   +1 more source

Light‐Induced Field‐Tunneling Synapses in Solution‐Processed Van Der Waals Heterostructures for Scalable, Retina‐Inspired Optical Sensing

Advanced Functional Materials, EarlyView.
A scalable, solution‐processed WSe2/ZrO2‐x van der Waals heterostructure realizes a light‐induced field‐tunneling synapse (LIFTS) that activates exclusively under bright illumination, emulating the photopic adaptation of the human retina at the device level.
Kijeong Nam, Jihyun Kim, Soobeen Ji, In Soo Kim, Sejin Kim, Eungseon Yeon, Do Kyung Hwang, Iva Plutnarová, Zdeněk Sofer, Sang Min Won, Joohoon Kang   +10 more
wiley   +1 more source

Imaging isodensity contours of molecular states with STM

New Journal of Physics, 2017
We present an improved way for imaging the density of states of a sample with a scanning tunneling microscope, which consists in mapping the surface topography while keeping the differential conductance (d I /d V ) constant.
Gaël Reecht, Benjamin W Heinrich, Hervé Bulou, Fabrice Scheurer, Laurent Limot, Guillaume Schull   +5 more
doaj   +1 more source

Structural and electronic properties of the pure and stable elemental 3D topological Dirac semimetal α-Sn

APL Materials, 2020
In-plane compressively strained α-Sn films have been theoretically predicted and experimentally proven to possess non-trivial electronic states of a 3D topological Dirac semimetal.
Ivan Madarevic, Umamahesh Thupakula, Gertjan Lippertz, Niels Claessens, Pin-Cheng Lin, Harsh Bana, Sara Gonzalez, Giovanni Di Santo, Luca Petaccia, Maya Narayanan Nair, Lino M.C. Pereira, Chris Van Haesendonck, Margriet J. Van Bael   +12 more
doaj   +1 more source

Effect of CO Molecule Orientation on the Reduction of Cu-Based Nanoparticles

Nanomaterials, 2021
The adsorption of CO on the surface of Cu-based nanoparticles was studied in the presence of an external electric field by means of scanning tunneling microscopy (STM) and spectroscopy (STS).
Sergey Y. Sarvadii, Andrey K. Gatin, Vasiliy A. Kharitonov, Nadezhda V. Dokhlikova, Sergey A. Ozerin, Maxim V. Grishin, Boris R. Shub   +6 more
doaj   +1 more source

Electrically Induced Phase Transition and Synaptic Functionality in MoTe2/Graphene Memristors

Advanced Functional Materials, EarlyView.
An electrically induced reversible 2H ↔ 1T′ phase transition is demonstrated in a vertical Au/Ti/MoTe2/graphene memristor with a laterally contacted graphene electrode. Resistive switching proceeds through a compositionally invariant amorphous/2H ↔ amorphous/1T′ transformation, in which a self‐formed amorphous MoTe2 interfacial region is proposed to ...
Chien‐Hua Wang, Mu‐Pai Lee, Jhen‐Dong Tsai, Liang‐Ying Hsieh, Jui‐Yuan Chen, Chun‐Wei Huang, Yen‐Fu Lin, Wen‐Wei Wu   +7 more
wiley   +1 more source

Electrochemical tip-enhanced Raman spectroscopy imaging with 8 nm lateral resolution

Electrochemistry Communications, 2019
Herein, we report tip-enhanced Raman spectroscopy (TERS) hyperspectral imaging under electrochemical control of a non-Raman-resonant molecular compound. A new setup combining a Scanning Tunneling Microscope (STM) and an optical coupling with high signal ...
Thomas Touzalin, Suzanne Joiret, Ivan T. Lucas, Emmanuel Maisonhaute   +3 more
doaj   +1 more source

Indium-contacted van der Waals gap tunneling spectroscopy for van der Waals layered materials

Scientific Reports, 2021
The electrical phase transition in van der Waals (vdW) layered materials such as transition-metal dichalcogenides and Bi2Sr2CaCu2O8+x (Bi-2212) high-temperature superconductor has been explored using various techniques, including scanning tunneling and ...
Dong-Hwan Choi, Kyung-Ah Min, Suklyun Hong, Bum-Kyu Kim, Myung-Ho Bae, Ju-Jin Kim   +5 more
doaj   +1 more source

Electrochemical Scanning Tunneling Spectroscopy of Redox-Active Molecules Bound by Au−C Bonds

, 2016
Electrochemical Scanning Tunneling Spectroscopy of Redox-Active Molecules Bound by Au−C ...
Ernesto J. Calvo (2275000), Santiago Martin (1463377), Richard J. Nichols (1463398), Alejandra M. Ricci (2314924)   +3 more
core   +1 more source

Sub‐1 ms Optoelectronic Synapse Based on {ZnCdO/ZnO} Multilayer Structure for High‐Speed Neuromorphic Vision Systems

Advanced Functional Materials, EarlyView.
Eu‐doped {ZnCdO/ZnO} structures grown on Si are developed, showcasing dual‐functionality controlled by europium doping. While high europium concentration transforms the device into an ultrafast, self‐powered photodetector, low‐doped structures can be used as an optoelectronic synapse.
Igor Perlikowski, Eunika Zielony, Adrian Kaim, Ewa Przeździecka   +3 more
wiley   +1 more source