Related Experiment Video
Updated: Jun 6, 2025
09:06
Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
8.0K
Order parameter symmetry in superconducting 2H-TaSeS.
1School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India.
Journal of Physics. Condensed Matter : an Institute of Physics Journal
|November 22, 2024
Summary
This study synthesizes 2H-TaSeS, a novel superconductor with a superconducting transition at 4.15K. Despite coexistence with charge-density waves, it exhibits conventional Type-II superconductivity, not topological superconductivity.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Solid State Physics
Background:
- Transition metal dichalcogenides are crucial for topological superconductivity research.
- Investigating novel superconductors is key to understanding exotic electronic phenomena.
Purpose of the Study:
- To synthesize and characterize single crystals of 2H-TaSeS.
- To determine the superconducting properties and phase coexistence in 2H-TaSeS.
- To explore the potential for topological superconductivity in this material.
Main Methods:
- Single crystal synthesis and characterization.
- Radiofrequency (RF) penetration depth measurements.
- Upper critical field measurements.
- Density Functional Theory (DFT) calculations.
- Phonon dispersion analysis.
Main Results:
- Superconducting transition confirmed at 4.15K, coexisting with charge-density wave ordering at 66K.
- RF penetration depth indicates s-wave superconductivity in the weak-coupling limit.
- DFT calculations and phonon dispersion confirm the possibility of coexisting superconductivity and charge-density waves.
- Vortex dynamics were studied, revealing conventional Type-II superconductivity.
Conclusions:
- 2H-TaSeS is a conventional Type-II superconductor.
- No evidence for topological superconductivity was found in 2H-TaSeS.
- The material provides a platform for studying the interplay between superconductivity and charge-density waves.
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