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Related Experiment Video

Updated: Jun 26, 2025

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

Published on: July 8, 2021

Pressure-Dependent Superconductivity in Topological Dirac Semimetal SrCuBi.

Nahyun Lee¹, Cuiying Pei^2,3,4, Jahyun Koo⁵

¹Department of Energy Science, Sungkyunkwan University, Suwon, 16419, Republic of Korea.

Advanced Materials (Deerfield Beach, Fla.)

|May 15, 2024

Summary

This summary is machine-generated.

Researchers discovered natural surface superconductivity in the 3D topological Dirac semimetal SrCuBi. This finding advances the search for topological superconductors and potential Majorana fermions.

Keywords:

high pressure honeycomb layer superconductivity symmetry breaking topological Dirac semimetal

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Last Updated: Jun 26, 2025

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

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Published on: August 2, 2019

Area of Science:

Condensed Matter Physics
Materials Science
Quantum Computing

Background:

Topological materials exhibiting superconductivity are crucial for fault-tolerant topological quantum computation.
Pristine topological materials with natural superconductivity are rare; most require induced superconductivity.
3D topological Dirac semimetals (TDS) offer a promising platform for novel quantum phenomena.

Purpose of the Study:

To investigate the potential of the Zintl phase compound SrCuBi as a natural topological superconductor.
To explore the surface electronic states and superconducting properties of SrCuBi.
To assess the impact of external pressure on the superconducting transition temperature of SrCuBi.

Main Methods:

Experimental synthesis and characterization of SrCuBi.
Theoretical calculations to identify topologically nontrivial surface states.
Transport measurements under varying pressure conditions.

Main Results:

SrCuBi, a planar honeycomb structured 3D TDS, exhibits natural surface superconductivity at 2.1 K under ambient pressure.
Theoretical analysis confirmed a topologically nontrivial state on the (100) surface.
Superconducting transition temperature (T_c) increased with applied pressure, reaching 4.8 K at 6.2 GPa.

Conclusions:

SrCuBi is a novel 3D topological Dirac semimetal with intrinsic surface superconductivity.
The pressure-dependent T_c suggests tunable superconducting properties.
This discovery opens avenues for exploring exotic Majorana fermions in 3D TDS superconductors.