Superconducting scanning tunneling microscopy tips in a magnetic field: Geometry-controlled order of the phase transition

2015 ◽  
Vol 107 (12) ◽  
pp. 122601 ◽  
Author(s):  
Matthias Eltschka ◽  
Berthold Jäck ◽  
Maximilian Assig ◽  
Oleg V. Kondrashov ◽  
Mikhail A. Skvortsov ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Phase Transition ◽  
Scanning Tunneling Microscopy ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Field Geometry

Scanning Tunneling Microscopy and Spectroscopy of (LaSe)1.14(NbSe2) at Very Low Temperatures and in Magnetic Field

2004 ◽  
Vol 54 (S4) ◽  
pp. 489-492 ◽  
Author(s):  
J. Kačmarčík ◽  
P. Szabó ◽  
P. Samuely ◽  
J.G. Rodrigo ◽  
H. Suderow ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Scanning Tunneling Microscopy ◽  
Low Temperatures ◽  
Scanning Tunneling ◽  
Tunneling Microscopy

Numerical simulations for ferromagnetic resonance of nano-size island structures probed by radio-frequency scanning tunneling microscopy

2021 ◽  
Author(s):  
Yudai Sato ◽  
Masahiro Haze ◽  
Hung Hsiang Yang ◽  
Kanta Asakawa ◽  
Susumu Takahashi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Radio Frequency ◽  
Scanning Tunneling Microscopy ◽  
Ferromagnetic Resonance ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Frequency Scanning ◽  
Out Of Plane ◽  
Rf Magnetic Field ◽  
Nano Size

Abstract We numerically calculated ferromagnetic resonance (FMR) spectra taken on a single-domain nano-size ferromagnetic island structure in the configuration of radio-frequency scanning tunneling microscopy (RF-STM), where RF electromagnetic waves are introduced into the tunneling gap through the probe tip. In this scheme, near-field in-plane azimuthal RF magnetic field induces FMR of an out-of-plane magnetized island situated below the tip under the external out-of-plane magnetic field. The amount of the magnetization of the island is effectively reduced by the resonance and the reduction can be detected from the spin-polarized tunneling conductance. From the calculated spectra we found that the FMR signal becomes larger with a smaller tip-sample distance and a sharper tip. It is also revealed that the azimuthal RF magnetic field and therefore the FMR signal are enhanced when a tip is located near the edge of the island.

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