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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
A low-temperature spin-polarized scanning tunneling microscope operating in a fully rotatable magnetic field
S Meckler1, M Gyamfi, O Pietzsch
1Institute of Applied Physics and Microstructure Advanced Research Center Hamburg, University of Hamburg, Jungiusstr. 11, D-20355 Hamburg, Germany. smeckler@physnet.uni-hamburg.de
The Review of Scientific Instruments
|March 5, 2009
Summary
A novel scanning tunneling microscope enables spin-polarized experiments at low temperatures with tunable magnetic fields. This instrument facilitates atomic-scale magnetic structure growth and characterization, advancing nanoscale magnetism research.
Area of Science:
- Materials Science
- Surface Science
- Condensed Matter Physics
Background:
- Spin-polarized scanning tunneling microscopy (SP-STM) is crucial for probing magnetic materials at the atomic scale.
- Existing SP-STM systems often have limitations in magnetic field control and sample preparation conditions.
Purpose of the Study:
- To develop and characterize a new SP-STM system with enhanced magnetic field control and in-situ growth capabilities.
- To demonstrate the instrument's performance for atomic-scale magnetic structure studies.
Main Methods:
- Operation of a new SP-STM at 4.7 K within a superconducting triple-axis vector magnet (up to 5 T).
- Utilized an ultrahigh vacuum system with temperatures ranging from 10 K to 1100 K for in-situ growth.
- Performed spin-polarized measurements on Fe/W(110) and Fe monolayer on Ru(0001).
Main Results:
- Demonstrated tunable magnetic field control (single axis and cooperative modes) influencing magnetization direction.
- Achieved atomic resolution imaging of magnetic structures.
- Successfully grew and characterized self-assembled magnetic nanostructures.
Conclusions:
- The new SP-STM system provides versatile magnetic field control and optimized growth conditions for atomic-scale magnetic studies.
- The instrument is capable of high-resolution imaging and manipulation of magnetic moments.
- This development advances the field of nanoscale magnetism and spintronics.
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