Results 51 to 60 of about 77,080 (261)

Scanning Tunneling Microscopy/Spectroscopy of Vortices in LiFeAs

, 2012
We investigate vortices in LiFeAs using scanning tunneling microscopy/spectroscopy. Zero-field tunneling spectra show two superconducting gaps without detectable spectral weight near the Fermi energy, evidencing fully-gapped multi-band superconductivity.
Hanaguri, T., Kitagawa, K., Matsubayashi, K., Mazaki, Y., Takagi, H., Uwatoko, Y.   +5 more
core   +1 more source

Scanning Tunneling Microscopy in the superconductor LaSb2 [PDF]

, 2013
We present very low temperature (0.15 K) scanning tunneling microscopy and spectroscopy experiments in the layered superconductor LaSb$_2$. We obtain topographic microscopy images with surfaces showing hexagonal and square atomic size patterns, and ...
Bud’ko, Sergey, Canfield, Paul, Canfield, Paul, Galvis, J. A., Suderow, H., Vieira, S.   +5 more
core   +5 more sources

In Situ Study of Resistive Switching in a Nitride‐Based Memristive Device

Advanced Functional Materials, EarlyView.
In situ TEM biasing experiment demonstrates the volatile I‐V characteristic of MIM lamella device. In situ STEM‐EELS Ti L2/L3 ratio maps provide direct evidence of the oxygen vacancies migrations under positive/negative electrical bias, which is critical for revealing the RS mechanism for the MIM lamella device.
Di Zhang, Rohan Dhall, Matthew M. Schneider, Cun Li, Chengyu Song, Sundar Kunwar, Hongyi Dou, Natanii R. Yazzie, Henry Tran, Daniel Appuing, Jim Ciston, Nicholas G. Cucciniello, Pinku Roy, Michael T. Pettes, John Watt, Winson Kuo, Haiyan Wang, Ye Cao, Rodney J. McCabe, Aiping Chen   +19 more
wiley   +1 more source

Coupling to real and virtual phonons in tunneling spectroscopy of superconductors

, 2016
Fine structures in the tunneling spectra of superconductors have been widely used to identify fingerprints of the interaction responsible for Cooper pairing.
Hlobil, Patrik, Jandke, Jasmin, Schackert, Michael, Schmalian, Jörg, Wulfhekel, Wulf   +4 more
core   +1 more source

Nanoscopic Filters as the Origin of d Wave Energy Gaps [PDF]

, 2003
A ferroelastic nanoscopic checkerboard pattern of pseudo- and superconductive gaps has been resolved by scanning tunneling microscopy on BSCCO. Using this pattern one can derive [not assume] a macroscopic anisotropic d wave superconductive energy gap ...
Phillips, J. C.
core   +1 more source

Reducing Open‐Circuit Voltage Losses in Wide‐Bandgap FAPbBr3 Perovskite Solar Cells for Continuous Unassisted Light‐Driven Water Splitting

Advanced Functional Materials, EarlyView.
The combination of formamidinium thiocyanate and 1,3‐propane diammonium iodide for bulk and top‐surface passivation, and a ternary fullerene blend to improve energy band alignment, suppresses energy losses in wide‐bandgap FAPbBr3 perovskite solar cells.
Laura Bellini, Daniël Grosfeld, Bruno Branco, Guus J. W. Aalbers, Lana M. Kessels, Willemijn H. M. Remmerswaal, Nicolas Daub, Kunal Datta, Martijn M. Wienk, René A. J. Janssen   +9 more
wiley   +1 more source

Symmetric Versus Nonsymmetric Structure of the Phosphorus Vacancy on InP(110)

, 2000
The atomic and electronic structure of positively charged P vacancies on InP(110) surfaces is determined by combining scanning tunneling microscopy, photoelectron spectroscopy, and density-functional theory calculations.
B. Engels, C. H. Chen, G. Lengel, G. Schwarz, G. Schwarz, H. Kim, H. Kim, H. Kim, H. Nienhaus, J. Da̧browski, J. Harper, J. Harper, J. Neugebauer, K. Horn, K. Urban, L. Aballe, M. Bockstedte, M. Scheffler, Ph. Ebert, Ph. Ebert, Ph. Ebert, Ph. Ebert, Ph. Ebert, Ph. Ebert, S. Aloni, S. B. Zhang, S. B. Zhang, U. Scherz, U. Schröeder, W. Mönch   +29 more
core   +1 more source

Understanding and Tuning Mobile Interfaces in Ferroelectric Hf0.5Zr0.5O2 Thin Films in Relation to Microstructure

Advanced Functional Materials, EarlyView.
Ferroelectricity in thin HfO2‐based films offers great possibilities for next‐generation neuromorphic memory devices. There, the response to subcoercive voltage signals is driven by the movement of mobile interfaces and their interaction with crystal defects – a yet rather unexplored aspect, which we shed light on and gain new insights into the complex
Maximilian T. Becker, Yoonsang Park, Kihong Kim, Ji Soo Kim, Nives Strkalj, Atif Jan, Giuliana Di Martino, Benson K. Tsai, Haiyan Wang, Ping Lu, Duk‐Hyun Choe, Judith L. MacManus‐Driscoll   +11 more
wiley   +1 more source

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

Beilstein 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, Anna Tschetschetkin, Norbert Maurer, Elena Mena-Osteritz, Peter Bäuerle, Paul Ziemann   +5 more
doaj   +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