Results 51 to 60 of about 454,935 (314)

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +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

An ultrahigh-vacuum cryostat for simultaneous scanning tunneling microscopy and magneto-transport measurements down to 400mK

, 2017
We present the design and calibration measurements of a scanning tunneling microscope setup in a 3He ultrahigh-vacuum cryostat operating at 400 mK with a hold time of 10 days.
Ast, Christian R., Becker, Stefan, Bindel, Jan Raphael, Johnsen, Tjorven, Liebmann, Marcus, Morgenstern, Markus, Muckel, Florian, Pezzotta, Mike, Saunus, Christian   +8 more
core   +1 more source

On‐Surface Indigo‐Based Bimolecular Coordination Networks with Programmable Regular or Vitreous Structure

Advanced Functional Materials, EarlyView.
A previously unreported coordination motif stabilising single Fe atoms by indigo chelation and pyridyl coordination on Au(111) has been revealed. By using planar tritopic pyridyl linkers (TPyB), extended 2D porous networks of indigo3(TPyB)2Fe6 form. These networks can be crystalline or vitreous and offer an environment where individual coordination ...
Hongxiang Xu, Ritam Chakraborty, Biao Yang, Dennis Meier, Joachim Reichert, Svetlana Klyatskaya, Mario Ruben, Shobhana Narasimhan, Johannes V. Barth, Anthoula C. Papageorgiou   +9 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

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

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

Imaging real-space flat band localization in kagome magnet FeSn

Communications Materials, 2023
Direct imaging and tuning of flat band localization in kagome materials remains a challenge. Here, scanning tunneling microscopy and photoemission spectroscopy are used to study FeSn, revealing real-space localization and magnetic tuning of the flat band
Daniel Multer, Jia-Xin Yin, Md. Shafayat Hossain, Xian Yang, Brian C. Sales, Hu Miao, William R. Meier, Yu-Xiao Jiang, Yaofeng Xie, Pengcheng Dai, Jianpeng Liu, Hanbin Deng, Hechang Lei, Biao Lian, M. Zahid Hasan   +14 more
doaj   +1 more source

Scanning Tunneling Spectroscopy in MgB2

, 2001
We present scanning tunneling microscopy measurements of the surface of superconducting MgB2 with a critical temperature of 39K. In zero magnetic field the conductance spectra can be analyzed in terms of the standard BCS theory with a smearing parameter ...
D. C. Larbalestier, D. G. Hinks, D. K. Finnemore, E. L. Wolf, G. Karapetrov, G. T. Jeong, G. W. Crabtree, H. F. Hess, I. Maggio-Aprile, J. Akimitsu, J. H. Coombs, J. Nagamatsu, J. S. Slusky, M. Iavarone, P. C. Canfield, R. C. Dynes, S. L. Budk´o, W. K. Kwok, Y. DeWilde   +18 more
core   +1 more source

Phonon and plasmon excitation in inelastic electron tunneling spectroscopy of graphite [PDF]

, 2003
The inelastic electron tunneling spectrum (IETS)of highly oriented pyrolitic graphite (HOPG) has been measured with scanning tunneling spectroscopy (STS) at 6K.
A. Grüneis, A. Rubio, B.C. Stipe, B.N.J. Persson, C. Oshima, D.P.E. Smith, E.T. Jensen, G. Kresse, H.J. Lee, J. Geiger, J. Tersoff, J.I. Pascual, J.I. Pascual, J.R. Hahn, K. Kern, L. Vitali, L. Wirtz, M. A. Schneider, N. Lorente, N. Lorente, O. Dubay, P. Pavone, R. Al-Jishi, R. Nicklow, R.T. Payne, S. Baroni, S. Rols, S. Siebentritt, T. Aizawa, W. Olejniczak, X. Gonze, X. Gonze, Y. Kawashima, Y. Kim   +33 more
core   +2 more sources