scholarly journals Millikelvin scanning tunneling microscope at 20/22 T with a graphite enabled stick–slip approach and an energy resolution below 8 μeV: Application to conductance quantization at 20 T in single atom point contacts of Al and Au and to the charge density wave of 2H–NbSe2

2021 ◽  
Vol 92 (9) ◽  
pp. 093701
Author(s):  
Marta Fernández-Lomana ◽  
Beilun Wu ◽  
Francisco Martín-Vega ◽  
Raquel Sánchez-Barquilla ◽  
Rafael Álvarez-Montoya ◽  
...  
Keyword(s):  
Energy Resolution ◽  
Scanning Tunneling Microscope ◽  
Charge Density Wave ◽  
Density Wave ◽  
Single Atom ◽  
Scanning Tunneling ◽  
Point Contacts ◽  
Stick Slip ◽  
Tunneling Microscope ◽  
Conductance Quantization

Scanning tunneling microscope study of charge-density-wave modulations inNbTe4

1998 ◽  
Vol 57 (11) ◽  
pp. 6235-6238 ◽  
Author(s):  
A. Prodan ◽  
S. W. Hla ◽  
V. Marinković ◽  
H. Böhm ◽  
F. W. Boswell ◽  
...  
Keyword(s):  
Charge Density ◽  
Scanning Tunneling Microscope ◽  
Microscope Study ◽  
Charge Density Wave ◽  
Density Wave ◽  
Scanning Tunneling ◽  
Tunneling Microscope

scholarly journals Josephson Effect in Pb/I/NbSe2 Scanning Tunneling Microscope Junctions

2003 ◽  
Vol 17 (18n20) ◽  
pp. 3569-3574 ◽  
Author(s):  
O. Naaman ◽  
R. C. Dynes ◽  
E. Bucher
Keyword(s):  
Single Crystals ◽  
Scanning Tunneling Microscope ◽  
Charge Density Wave ◽  
Josephson Effect ◽  
Tunnel Junctions ◽  
Density Wave ◽  
Scanning Tunneling ◽  
Josephson Effects ◽  
Tunneling Microscope ◽  
Stm Tips

We have developed a method for the reproducible fabrication of superconducting scanning tunneling microscope (STM) tips. We use these tips to form superconductor/insulator/superconductor tunnel junctions with the STM tip as one of the electrodes. We show that such junctions exhibit fluctuation dominated Josephson effects, and describe how the Josephson product IcRN can be inferred from the junctions' tunneling characteristics in this regime. This is first demonstrated for tunneling into Pb films, and then applied in studies of single crystals of NbSe 2. We find that in NbSe 2, IcRN is lower than expected, which could be attributed to the interplay between superconductivity and the coexisting charge density wave in this material.

Shot noise from single atom contacts in a scanning tunneling microscope

2016 ◽  
Vol 643 ◽  
pp. 10-12 ◽  
Author(s):  
Andreas Burtzlaff ◽  
Natalia L. Schneider ◽  
Alexander Weismann ◽  
Richard Berndt
Keyword(s):  
Shot Noise ◽  
Scanning Tunneling Microscope ◽  
Single Atom ◽  
Scanning Tunneling ◽  
Tunneling Microscope

scholarly journals The Formation of Self-Assembled Nanowire Arrays on Ge(001): a DFT Study of Pt Induced Nanowire Arrays

2009 ◽  
Vol 1177 ◽  
Author(s):  
Danny Eric Paul Vanpoucke ◽  
Geert Brocks
Keyword(s):  
Scanning Tunneling Microscope ◽  
Density Functional ◽  
Nanowire Arrays ◽  
Single Atom ◽  
Scanning Tunneling ◽  
Checkerboard Pattern ◽  
High Temperature Annealing ◽  
Functional Theory ◽  
Tunneling Microscope ◽  
Stm Images

AbstractNanowire (NW) arrays form spontaneously after high temperature annealing of a sub monolayer deposition of Pt on a Ge(001) surface. These NWs are a single atom wide, with a length limited only by the underlying beta-terrace to which they are uniquely connected. Using ab-initio density functional theory (DFT) calculations we study possible geometries of the NWs and substrate. Direct comparison to experiment is made via calculated scanning tunneling microscope (STM) images. Based on these images, geometries for the beta-terrace and the NWs are identified, and a formation path for the nanowires as function of increasing local Pt density is presented. We show the beta-terrace to be a dimer row surface reconstruction with a checkerboard pattern of Ge-Ge and Pt-Ge dimers. Most remarkably, comparison of calculated to experimental STM images shows the NWs to consist of germanium atoms embedded in the Pt-lined troughs of the underlying surface, contrary to what was assumed previously in experiments.

Conductance step for a single-atom contact in the scanning tunneling microscope: Noble and transition metals

1996 ◽  
Vol 53 (23) ◽  
pp. 16086-16090 ◽  
Author(s):  
C. Sirvent ◽  
J. G. Rodrigo ◽  
S. Vieira ◽  
L. Jurczyszyn ◽  
N. Mingo ◽  
...  
Keyword(s):  
Transition Metals ◽  
Scanning Tunneling Microscope ◽  
Single Atom ◽  
Scanning Tunneling ◽  
Tunneling Microscope

Control of spin-polarized current in a scanning tunneling microscope by single-atom transfer

2010 ◽  
Vol 96 (13) ◽  
pp. 132505 ◽  
Author(s):  
M. Ziegler ◽  
N. Ruppelt ◽  
N. Néel ◽  
J. Kröger ◽  
R. Berndt
Keyword(s):  
Scanning Tunneling Microscope ◽  
Single Atom ◽  
Scanning Tunneling ◽  
Atom Transfer ◽  
Tunneling Microscope ◽  
Spin Polarized

scholarly journals How Much Force Does it Take to Move an Atom on a Surface?

2008 ◽  
Vol 16 (4) ◽  
pp. 3-5
Author(s):  
Stephen W. Carmichael
Keyword(s):  
Atomic Force Microscope ◽  
Scanning Tunneling Microscope ◽  
Single Atom ◽  
Scanning Tunneling ◽  
Tunneling Microscope ◽  
Atomic Force

It was demonstrated 18 years ago that atoms could be manipulated, one at a time, on a surface. Yet only recently has the force required to move an atom been determined. Markus Ternes, Christopher Lutz, Cyrus Hirjibehedin, Franz Giessibl, and Andreas Heinrich, in a technical tour de force, have engineered a microscope that incorporates features of the scanning tunneling microscope (STM) and atomic force microscope (AFM) to accurately quantitate the lateral and vertical forces needed to move a single atom on a surface.

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