Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Bhowal, Sayantika"'
Autor:
Bhowal, Sayantika, Spaldin, Nicola A.
We investigate the role of electric toroidal dipoles in the prototypical ferroaxial materials NiTiO$_3$ and K$_2$Zr(PO$_4$)$_2$, which undergo ferroaxial structural phase transitions of order-disorder and displacive type, respectively. Using first-pr
Externí odkaz:
http://arxiv.org/abs/2407.08369
Autor:
Nag, Jadupati, Das, Bishal, Bhowal, Sayantika, Nishioka, Yukimi, Bandyopadhyay, Barnabha, Sarker, Saugata, Kumar, Shiv, Kuroda, Kenta, Gopalan, Venkatraman, Kimura, Akio, Suresh, K. G., Alam, Aftab
Spintronics has emerged as a viable alternative to traditional electronics based technologies in the past few decades. While on one hand, the discovery of topological phases of matter with protected spin-polarized states has opened up exciting prospe
Externí odkaz:
http://arxiv.org/abs/2312.11980
We demonstrate that two phenomena, the kinetic magneto-electric effect and the non-linear Hall effect, are universal to polar metals, as a consequence of their coexisting and contraindicated polarization and metallicity. We show that measurement of t
Externí odkaz:
http://arxiv.org/abs/2309.09794
We use symmetry analysis and density functional theory to characterize antiferromagnetic (AFM) materials which have a finite equilibrium magnetization density on particular surface terminations. A nonzero magnetic dipole moment per unit area or "surf
Externí odkaz:
http://arxiv.org/abs/2306.06631
Autor:
Bhowal, Sayantika, Spaldin, Nicola A.
We show that time-reversal symmetry broken, centrosymmetric antiferromagnets with nonrelativistic spin-splitting are conveniently described in terms of the ferroic ordering of magnetic octupoles. The magnetic octupoles are the lowest-order ferroicall
Externí odkaz:
http://arxiv.org/abs/2212.03756
Autor:
Bhowal, Sayantika, Spaldin, Nicola A.
We review the class of materials known as polar metals, in which polarity and metallicity coexist in the same phase. While the notion of polar metals was first invoked more than 50 years ago, their practical realization has proved challenging, since
Externí odkaz:
http://arxiv.org/abs/2210.02993
Autor:
Das, Manjil, Bhowal, Sayantika, Sannigrahi, Jhuma, Bandyopadhyay, Abhisek, Banerjee, Anupam, Cibin, Giannantonio, Khalyavin, Dmitry, Banerjee, Niladri, Adroja, Devashibhai, Dasgupta, Indra, Majumdar, Subham
We address the concomitant metal-insulator transition (MIT) and antiferromagnetic ordering in the novel pyrochlore iridate Eu2Ir2O7 by combining x-ray absorption spectroscopy, x-ray and neutron diffractions and density functional theory (DFT) based c
Externí odkaz:
http://arxiv.org/abs/2203.04939
Publikováno v:
Phys. Rev. B 105, 195421 (2022)
Using an effective Dirac model, we study the orbital Hall effect (OHE) in bilayers of transition metal dichalcogenides with 2H stacking (2H-TMD). We use first-order perturbation theory in the interlayer coupling of the bilayer system to obtain analyt
Externí odkaz:
http://arxiv.org/abs/2201.03491
Autor:
Bhowal, Sayantika, Spaldin, Nicola A.
We develop a general theory to classify magnetic skyrmions and related spin textures in terms of their magnetoelectric multipoles. Since magnetic skyrmions are now established in insulating materials, where the magnetoelectric multipoles govern the l
Externí odkaz:
http://arxiv.org/abs/2201.01667
Magnetic Compton scattering is an established tool for probing magnetism in ferromagnetic or ferrimagnetic materials with a net spin polarization. Here we show that, counterintuitively, {\it non-magnetic} systems can also have a non-zero magnetic Com
Externí odkaz:
http://arxiv.org/abs/2109.07315