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Updated: Jan 28, 2026

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures

Published on: October 9, 2012

Piezo-driven sample rotation system with ultra-low electron temperature.

Pengjie Wang¹, Ke Huang¹, Jian Sun¹

¹International Center for Quantum Materials, Peking University, Beijing 100871, China.

The Review of Scientific Instruments

|March 6, 2019

Summary

This summary is machine-generated.

We developed an ultra-low temperature piezo-driven rotator for precise sample positioning in tilted magnetic field experiments. This system achieves 25 mK electron temperatures, enabling new studies of quantum phenomena.

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Area of Science:

Condensed Matter Physics
Experimental Physics
Low-Temperature Physics

Background:

Piezo-driven rotators offer precise angle control for tilted magnetic field experiments.
Cooling piezo-driven rotators and samples to ultra-low temperatures is challenging due to heat leaks and poor thermal contacts.

Purpose of the Study:

To design and implement a piezo-driven sample rotation system capable of achieving ultra-low temperatures (25 mK).
To enable electrical transport measurements at ultra-low electron temperatures in a tilted magnetic field setup.

Main Methods:

Customized thermal links and contacts were developed to cool the sample and rotator to 25 mK.
Home-made filters were employed to achieve ultra-low electron temperatures for electrical transport measurements.
The system was demonstrated using measurements of tilt-induced localization in a two-dimensional electron gas.

Main Results:

The developed system successfully cooled the sample and rotating sample holder to 25 mK.
Ultra-low electron temperatures of 25 mK were achieved for electrical transport measurements.
The system facilitated the observation of tilt-induced localization and delocalization phenomena.

Conclusions:

The novel piezo-driven rotation system is effective for ultra-low temperature experiments.
The system enables advanced studies of quantum phenomena in two-dimensional electron systems at millikelvin temperatures.
This technology opens new avenues for exploring electron behavior under extreme conditions.