19 citations · 20 across the 9 of their papers we have counts for
9 papers
Quantum-metric Bloch oscillations in weakly inhomogeneous electric fields
M. Maneesh Kumar, Md Kaif Faiyaz, Sayan Sarkar +1
Geometric analogs of Bloch oscillations studied so far have relied on Berry curvature. We show that a weakly inhomogeneous electric field adds a distinct quantum-metric term to sem…
Orbital-Splitter Current in Altermagnets
Koushik Ghorai, Sayan Sarkar, Amit Agarwal
In collinear altermagnets, the real-space rotational symmetry of opposite spin sublattices generates a large nonrelativistic spin-splitter current. Orbital transport in this settin…
Electric-Polarization Probe of the Magnon Orbital Moment Current in Altermagnet
Sankar Sarkar, Amit Agarwal
Efficient transport of spin and orbital moments, and their electrical detection, are among the main challenges in spintronics and orbitronics. In magnetic insulators, these current…
Valleytronics in 2D Materials Roadmap
Kyle L. Seyler, Giancarlo Soavi, Bent Weber +30
Valleytronics exploits non-equivalent energy extrema in the electronic band structure of crystalline solids -- the valley degree of freedom -- to encode, manipulate, and read out i…
Extrinsic Spin Splitter Currents in Altermagnets
Sanjay Sarkar, Sayan Sarkar, Amit Agarwal
Altermagnets exhibit momentum-dependent spin splitting despite having zero net magnetization. This enables a spin-splitter effect in which an external electric field generates tran…
Band geometric transverse current driven by inhomogeneous AC electric field
M. Maneesh Kumar, Sanjay Sarkar, Amit Agarwal
We develop a semiclassical theory for electron wavepacket dynamics in the presence of an inhomogeneous AC electric field. While static electric-field gradients are known to generat…
Band Geometry Induced Third-Harmonic Generation
Sanjay Sarkar, Debottam Mandal, Amit Agarwal
Third-harmonic generation (THG) is a key nonlinear optical process for ultrafast imaging, terahertz (THz) signal generation, and symmetry-sensitive probes, often dominating in cent…
Third-order rectification in centrosymmetric metals
Sanjay Sarkar, Amit Agarwal
Rectification, the conversion of AC fields into DC currents, is crucial for optoelectronic applications such as energy harvesting and wireless communication. However, it is convent…
Observation of gapped state in rare-earth monopnictide HoSb
M. Mofazzel Hosen, Gyanendra Dhakal, Baokai Wang +17
The rare-earth monopnictide family is attracting an intense current interest driven by its unusual extreme magnetoresistance (XMR) property and the potential presence of topologica…