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Related Experiment Video

Updated: Jun 2, 2026

$High Pressure Single Crystal Diffraction at PX^2$

High Pressure Single Crystal Diffraction at PX^2

Published on: January 16, 2017

High pressure studies on RuIn3 single crystal.

Awadhesh Mani¹, Shilpam Sharma, Sharat Chandra

¹Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, Tamil Nadu, India. mani@igcar.gov.in

Journal of Physics. Condensed Matter : an Institute of Physics Journal

|May 5, 2011

Summary

Electrical resistivity studies on RuIn3 single crystals reveal a pressure-induced insulator-to-metal transition around 1.2 GPa. Increasing pressure monotonically decreases the material's energy gap, consistent with experimental observations.

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Area of Science:

Condensed Matter Physics
Materials Science
Solid-State Physics

Background:

Electrical resistivity of RuIn3 single crystals exhibits complex behavior influenced by temperature and pressure.
Understanding the electronic properties of RuIn3 is crucial for exploring its potential applications.

Purpose of the Study:

To investigate the temperature- and pressure-dependent electrical resistivity of RuIn3 single crystals.
To determine the effect of pressure on the electronic band structure and phase transitions in RuIn3.

Main Methods:

Temperature-dependent electrical resistivity measurements from 4-300 K.
Pressure-dependent electrical resistivity measurements up to 5 GPa.
First-principles band structure calculations.

Main Results:

Intrinsic semiconducting behavior observed at temperatures above 275 K.
Impurity effects dominate low-temperature resistivity.
An insulator-to-metal transition occurs around 1.2 GPa at low temperatures.
Band structure calculations show a monotonic decrease in the energy gap with increasing pressure (0.222 eV at 0 GPa to 0.167 eV at 8 GPa).

Conclusions:

Pressure plays a significant role in tuning the electronic properties of RuIn3.
The observed insulator-to-metal transition is attributed to the pressure-induced reduction of the energy gap.
Experimental findings are consistent with theoretical band structure calculations.