Results 121 to 130 of about 20,734 (282)

Universal Conductance Fluctuations in Quantum Anomalous Hall Insulators

Advanced Materials, EarlyView.
Universal conductance fluctuations are observed in mesoscopic quantum anomalous Hall insulators. Two distinct fluctuation patterns are identified, arising from different interference processes of bulk and chiral edge states, respectively. These findings unveil rich quantum interference phenomena in quantum anomalous Hall insulators and provide insights
Peng Deng, Peng Zhang, Gang Qiu, Ting‐Hsun Yang, Chang Niu, Yaochen Li, Wenqiang Cui, Yang Feng, Peide D. Ye, Ke He, Kai Chang, Kang L. Wang   +11 more
wiley   +1 more source

STM study of multiband superconductivity in NbSe2 using a superconducting tip

, 2004
We present a method to produce superconducting tips to be used in Scanning Tunneling Microscopy/Spectroscopy experiments. We use these tips to investigate the evolution of the electronic density of states of NbSe2 from 0.3K up to its critical temperature
Agrait, Agrait, Blackford, Boaknin, Clayman, Dynes, Hess, J.G. Rodrigo, Lykken, Martinez-Samper, Morris, Naaman, Pan, Rodrigo, S. Vieira, Scheer, Short, Suhl, Tinkham, Tomlinson, Untiedt, Yokoya   +21 more
core   +1 more source

Gapless Superconductivity From Extremely Dilute Magnetic Disorder in 2H‐NbSe2‐xSx

Advanced Materials, EarlyView.
We demonstrate that 2H‐NbSe2‐xSx hosts gapless superconductivity at unexpectedly low magnetic impurity concentrations. Combining STM, Bogoliubovde Gennes simulations, DFT, and quasiparticle interference, we comprehensively study the development of gapless behavior and show that SeS substitution reshapes the band structure, enhances nesting, and drives ...
Jose Antonio Moreno, Mercè Roig, Víctor Barrena, Edwin Herrera, Alberto M. Ruiz, Samuel Mañas‐Valero, Antón Fente, Anita Smeets, Jazmín Aragón, Yanina Fasano, Beilun Wu, Maria N. Gastiasoro, Eugenio Coronado, José J. Baldoví, Brian M. Andersen, Isabel Guillamón, Hermann Suderow   +16 more
wiley   +1 more source

Electronic properties of (Zn,Co)O systems probed by scanning tunnelling spectroscopy [PDF]

Journal of Electrical and Electronics Engineering, 2008
The aim of this paper is to gain insight into theelectronic properties of (Zn,Co)O system - a widebandgap Diluted Magnetic Semiconductors (DMS)showing room temperature (RT) ferromagnetism undern-type doping conditions. On the experimental side, ultrahigh-
L. Moldovan
doaj  

Amplifier for scanning tunneling microscopy at MHz frequencies

, 2018
Conventional scanning tunneling microscopy (STM) is limited to a bandwidth of circa 1kHz around DC. Here, we develop, build and test a novel amplifier circuit capable of measuring the tunneling current in the MHz regime while simultaneously performing ...
Allan, M. P., Bastiaans, K. M., Benschop, T., Chatzopoulos, D., Cho, D. H., Dong, Q., Jin, Y.   +6 more
core   +4 more sources

A Colloidal Quantum Dot Thermistor and Bolometer

Advanced Materials, EarlyView.
This work introduces colloidal quantum dot thermistors employing a potential barrier structure to tune the activation energy of transport and hence the temperature coefficient of resistance (TCR). Upon integration with plasmonic absorbers, the CQD‐based bolometer device enables room‐temperature wavelength‐selective photodetection across the mid‐ to ...
Gaurav Kumar, Mariona Dalmases, Nima Taghipour, Rajesh Bera, Guy L. Whitworth, Goretti Torres Perez, Miguel Dosil, Gerasimos Konstantatos   +7 more
wiley   +1 more source

Tiling of the five-fold surface of Al(70)Pd(21)Mn(9)

, 2001
The nature of the five-fold surface of Al(70)Pd(21)Mn(9) has been investigated using scanning tunneling microscopy. From high resolution images of the terraces, a tiling of the surface has been constructed using pentagonal prototiles. This tiling matches
Boudard, D.W. Delaney, Dubois, Elser, G. Kasner, Gierer, Gierer, Grünbaum, J. Ledieu, Kasner, Ko, Ledieu, Ledieu, Ledieu, Naumović, Niizeki, Papadopolos, Penrose, Persson, R. McGrath, R.D. Diehl, Schaub, Shechtman, Shen, T.A. Lograsso, Z. Papadopolos   +25 more
core   +1 more source

Positively Charged Polymer‐Brush MOFs for Large‐Area, Pressure‐Resistant Gas Separation Membranes

Advanced Materials, EarlyView.
A universal POPA strategy enables positively charged polymer‐brush MOFs with self‐adaptive interfacial interlocking to resist aggregation under fast processing. This design ensures seamless dispersion within large‐area selective layers, achieving 1 m‐wide roll‐to‐roll fabrication of pressure‐resistant MMCMs with tunable CO2 separation performance ...
Yi Yang, Ye Yuan, Yuxiu Sun, Fei Shi, Chenyang Song, Weifan Wang, Qinghua Li, Menglong Sheng, Zhihua Qiao, Jingwei Hou, Anthony K. Cheetham, Zhi Wang   +11 more
wiley   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

On the mechanical stability of graphene in situ grown on Cu(111) : Buckling and sliding

Carbon Trends
Graphene monolayers were grown on copper crystals and then mechanically deformed using an original experimental equipment allowing to investigate in situ at the atomic scale by scanning tunnelling microscopy the evolution of coated specimens under ...
Christophe Coupeau, Arnaud Claudel, Michel Drouet, Ana Cristina Gomez Herrero, Vincent Bouchiat, Julien Durinck   +5 more
doaj   +1 more source