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Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures

Published on: October 9, 2012

An ultrahigh vacuum compatible sample holder for studying complex metal surfaces.

R S Dhaka¹, A K Shukla, M Maniraj

¹UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore, 452001 Madhya Pradesh, India.

The Review of Scientific Instruments

|May 6, 2010

Summary

This study introduces a versatile sample holder for studying complex metallic crystals under ultrahigh vacuum. The design enables precise surface preparation and characterization, crucial for advanced materials research.

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Area of Science:

Materials Science
Surface Science
Condensed Matter Physics

Background:

Studying complex metallic crystals requires ultrahigh vacuum (UHV) conditions for clean, ordered surfaces.
Traditional sample holders face challenges in achieving high temperatures and efficient cooling for surface preparation.

Purpose of the Study:

To design and present a compact, versatile sample holder for UHV studies of complex metallic crystals.
To facilitate sputtering, annealing to high temperatures, and adlayer deposition with precise control.

Main Methods:

A novel sample holder design with a vertically mounted resistive heater, separate from the sample plate.
Incorporation of a screw mechanism for pressing Cu braids for efficient sample cooling.
Integration of 5 degrees of freedom, including tilt rotation, for versatile sample manipulation.

Main Results:

The sample holder allows for thorough degassing of the heater without pre-heating the sample.
Efficient cooling is achievable for adlayer deposition.
The holder has been successfully used for diverse metallic surfaces, including Ni(2)MnGa(100).

Conclusions:

The presented sample holder design is effective for preparing and studying clean, ordered surfaces of complex metallic crystals under UHV.
Its versatility and precise control capabilities advance research in materials science and surface physics.
Demonstrated utility across various metallic systems highlights its broad applicability.