5 papers
Giant Spin Magnetization from Quantum Geometry in Altermagnets
Neelanjan Chakraborti, Sudeep Kumar Ghosh, Snehasish Nandy
Altermagnets host spin-split band structures while exhibiting vanishing equilibrium spin magnetization, making field-induced responses a direct probe of their quantum geometry. A c…
Probing persistent spin textures through nonlinear magnetotransport
Neelanjan Chakraborti, Akash Dey, Snehasish Nandy +2
Persistent spin textures (PST) are special spin configurations in spin-orbit-coupled systems in which the spin polarization acquires a symmetry-enforced momentum-independent orient…
Intrinsic Nonlinear Gyrotropic Magnetic Effect Governed by Spin-Rotation Quantum Geometry
Neelanjan Chakraborti, Snehasish Nandy, Sudeep Kumar Ghosh
Nonlinear magnetic response driven by time-periodic magnetic fields offers a distinct route to probe spin-resolved quantum geometry beyond conventional electric-field-driven nonlin…
Gyrotropic Fingerprints of Magnetic Topological Insulator-Unconventional Magnet Interfaces
Neelanjan Chakraborti, Snehasish Nandy, Sudeep Kumar Ghosh
Unambiguously identifying unconventional magnetic orders requires probes directly sensitive to their momentum-dependent spin-split band structures. Here, we employ a Zeeman quantum…
Zeeman Quantum Geometry as a Probe of Unconventional Magnetism
Neelanjan Chakraborti, Sudeep Kumar Ghosh, Snehasish Nandy
Unconventional magnets with momentum-dependent spin-splitting but zero net magnetization form a recently identified class of collinear magnets that are challenging to probe via con…