Quantum spin-liquid in Ba3CuSb2O9epitaxial thin films
Aswathi Kaipamangalath1, Riya Pathak1,2, Wasim Akram1
1School of Physics, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 695551, India.
Epitaxial thin films of hexagonal perovskite Ba3CuSb2O9 exhibit quantum spin liquid behavior, showing no magnetic ordering down to 400 mK. This suggests potential for quantum technologies using these novel quantum materials.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Quantum Information Science
Background:
- Hexagonal perovskites are promising quantum spin liquid (QSL) systems.
- Epitaxial thin films offer controlled structures for quantum phase applications.
Purpose of the Study:
- To fabricate and characterize epitaxial thin films of the QSL material Ba3CuSb2O9.
- To investigate the quantum spin liquid properties of these thin films.
Main Methods:
- Pulsed laser deposition for fabricating epitaxial Ba3CuSb2O9 thin films on MgO (100) substrates.
- X-ray diffraction to confirm epitaxial growth.
- Temperature-dependent magnetization and magnetic isotherm analysis.
Main Results:
- Epitaxial growth of Ba3CuSb2O9 thin films validated by XRD.
- No magnetic ordering observed down to 400 mK in thin films.
- Large antiferromagnetic Curie-Weiss temperature (θCW ≈ -11.68 K) indicating magnetic frustration and QSL behavior.
Conclusions:
- Epitaxial Ba3CuSb2O9 thin films demonstrate quantum spin liquid characteristics.
- These findings highlight the potential of Ba3CuSb2O9 for quantum technologies.
More Related Videos
09:00Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
Published on: June 28, 2018
04:22Author Spotlight: Advancements in High-Performance Thermoelectric Thin Films Through Radio Frequency Magnetron Sputtering
Published on: May 17, 2024
