First-Principles Calculation of Tunneling Current of H2- or NH3-Adsorbed Si(001) Surface in Scanning Tunneling Microscopy

2006 ◽  
Vol 45 (3B) ◽  
pp. 2154-2157 ◽  
Author(s):  
Shinya Horie ◽  
Tomoya Ono ◽  
Yuji Kuwahara ◽  
Katsuyoshi Endo ◽  
Kikuji Hirose
Keyword(s):  
Scanning Tunneling Microscopy ◽  
First Principles ◽  
Tunneling Current ◽  
First Principles Calculation ◽  
Scanning Tunneling ◽  
Tunneling Microscopy

scholarly journals Towards Laterally Resolved Ferromagnetic Resonance with Spin-Polarized Scanning Tunneling Microscopy

Nanomaterials ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 827
Author(s):  
Marie Hervé ◽  
Moritz Peter ◽  
Timofey Balashov ◽  
Wulf Wulfhekel
Keyword(s):  
Scanning Tunneling Microscopy ◽  
Ferromagnetic Resonance ◽  
Tunneling Current ◽  
Magnetic Vortex ◽  
Scanning Tunneling ◽  
Tunneling Junction ◽  
Resonance Signal ◽  
Tunneling Microscopy ◽  
Spin Polarized ◽  
Local Detection

We used a homodyne detection to investigate the gyration of magnetic vortex cores in Fe islands on W(110) with spin-polarized scanning tunneling microscopy at liquid helium temperatures. The technique aims at local detection of the spin precession as a function of frequency using a radio-frequency (rf) modulation of the tunneling bias voltage. The gyration was excited by the resulting spin-polarized rf current in the tunneling junction. A theoretical analysis of different contributions to the frequency-dependent signals expected in this technique is given. These include, besides the ferromagnetic resonance signal, also signals caused by the non-linearity of the I ( U ) characteristics. The vortex gyration was modeled with micromagnetic finite element methods using realistic parameters for the tunneling current, its spin polarization, and the island shape, and simulations were compared with the experimental results. The observed signals are presented and critically analyzed.

First-principles theory of scanning tunneling microscopy

1991 ◽  
Vol 13 (8) ◽  
pp. 267-304 ◽  
Author(s):  
Masaru Tsukada ◽  
Katsuyoshi Kobayashi ◽  
Nobuyuki Isshiki ◽  
Hiroyuki Kageshima
Keyword(s):  
Scanning Tunneling Microscopy ◽  
First Principles ◽  
Scanning Tunneling ◽  
Tunneling Microscopy

First-principles modelling of scanning tunneling microscopy using non-equilibrium Green’s functions

2010 ◽  
Vol 5 (4) ◽  
pp. 369-379 ◽  
Author(s):  
Haiping Lin ◽  
Janosch M. C. Rauba ◽  
Kristian S. Thygesen ◽  
Karsten W. Jacobsen ◽  
Michelle Y. Simmons ◽  
...  
Keyword(s):  
Scanning Tunneling Microscopy ◽  
First Principles ◽  
Green's Functions ◽  
Green’S Functions ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Non Equilibrium
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