Related Experiment Video
Updated: Jun 21, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
Published on: August 2, 2019
Observation of quantum oscillations and large linear magnetoresistance in quasi-two-dimensional NdAgSb2
Aarti Gautam1, Haribrahma Singh1, Prabuddha Kant Kant Mishra1
1Department of Chemistry, Indian Institute of Technology Delhi, New Delhi 110016, India.
Abstract:
Rare-earth-based layered pnictides have attracted considerable attention in condensed matter physics owing to the intricate interplay between magnetism and nontrivial band topology. Motivated by this, we report the successful growth of high-quality single crystals of NdAgSb2, and a comprehensive investigation of their anisotropic magnetic, transport, and magneto-transport properties. NdAgSb2crystallizes in a tetragonal crystal system with space groupP4/nmm. Magnetic measurements reveal an antiferromagnetic transition atTN≈3K. Electrical resistivity measurements confirm metallic behavior and reveal a pronounced anisotropic, nonsaturating linear magnetoresistance (MR), reaching approximately 400% and 70% forH∥candH⊥cdirections, respectively. Notably, Shubnikov-de Haas oscillations are observed in the Hall resistivity measurements. Analysis of the quantum oscillations reveals four distinct frequencies for Fermi pockets, with light effective masses and nontrivialπBerry phase, consistent with Dirac like electronic dispersion in NdAgSb2. The field-induced evolution from twofold to fourfold MR symmetry indicates an anisotropic quasi-two-dimensional Fermi surface in NdAgSb2.
More Related Videos
Related Concept Videos
Diamagnetism
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets.
Ferromagnetism
Induced Electric Dipoles
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
Magnetic Susceptibility and Permeability
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
The de Broglie Wavelength
Diamagnetic Shielding of Nuclei: Local Diamagnetic Current

