Ashis Nandy

ORCID: 0000-0002-9296-2535
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About
Contact & Profiles
Research Areas
  • Indian History and Philosophy
  • Topological Materials and Phenomena
  • Advanced Condensed Matter Physics
  • Physics of Superconductivity and Magnetism
  • Magnetic properties of thin films
  • Magnetic and transport properties of perovskites and related materials
  • South Asian Cinema and Culture
  • South Asian Studies and Conflicts
  • Quantum Chromodynamics and Particle Interactions
  • Anthropological Studies and Insights
  • Computational Drug Discovery Methods
  • Graphene research and applications
  • Particle physics theoretical and experimental studies
  • Indian Economic and Social Development
  • Quantum and electron transport phenomena
  • South Asian Studies and Diaspora
  • Multiferroics and related materials
  • High-Energy Particle Collisions Research
  • Electronic and Structural Properties of Oxides
  • Academic and Historical Perspectives in Psychology
  • History of Science and Medicine
  • Social and Economic Development in India
  • 2D Materials and Applications
  • Atomic and Molecular Physics
  • Space Science and Extraterrestrial Life

National Institute of Science Education and Research
2020-2024

Homi Bhabha National Institute
2022-2024

Northern New Mexico College
2024

Jadavpur University
2013-2024

S.N. Bose National Centre for Basic Sciences
2010-2022

Uppsala University
2017-2022

Physical Sciences (United States)
2022

University of Calcutta
2015-2018

Bellingham Technical College
2018

Norwegian University of Science and Technology
2017

Persistent hyperglycemia, impairment of redox status and establishment inflammatory pathophysiology integrally play important role in the pathogenesis diabetic cardiomyopathy (DC). Present study examined therapeutic potential protocatechuic acid isolated from Sansevieria roxburghiana rhizomes against DC employing rodent model type 2 diabetes (T2D). T2D was induced by high fat diet + a low-single dose streptozotocin (35 mg/kg, i.p.). rats exhibited significantly (p < 0.01) fasting blood...

10.3389/fphar.2017.00251 article EN cc-by Frontiers in Pharmacology 2017-05-08

We address the importance of modern theory orbital magnetization for spintronics. Based on an all-electron first-principles approach, we demonstrate that predictive power routinely employed ``atom-centered'' approximation is limited to materials like elemental bulk ferromagnets, while application crucial in chemically or structurally inhomogeneous systems such as magnetic thin films, and exhibiting nontrivial topology reciprocal real space, e.g., Chern insulators noncollinear systems. find...

10.1103/physrevb.94.121114 article EN Physical review. B./Physical review. B 2016-09-15

Efficient manipulation of magnetic order with electric current pulses is desirable for achieving fast spintronic devices. The Rashba-Edelstein effect, wherein spin polarization electrically induced in noncentrosymmetric systems, provides a mean to achieve staggered spin-orbit torques. Initially predicted spin, its orbital counterpart has been disregarded up now. Here we report generalized which generates not only but also polarization, find be far from being negligible. We show that the...

10.1038/s41467-019-13367-z article EN cc-by Nature Communications 2019-11-26

This book narrates how Ayodhya's inhabitants experienced the events that led up to and followed destruction of Babri Masjid, end-product a century's effort convert Hindus into 'proper' modern nation. Woven narrative is an analysis culture communal conflict, nature organized mass violence, political psychology Hindu nationalism.

10.2307/2651320 article EN The American Historical Review 1998-10-01

We report on a general principle using the interlayer exchange coupling to extend regime of chiral magnetic films in which stable or metastable skyrmions can appear at zero field. verify this concept basis first-principles model for Mn monolayer W(001) substrate, prototype magnet atomic-scale texture is determined by frustration interactions, impossible unwind laboratory fields. By means \textit{ab initio} calculations Mn/W$_m$/Co$_n$/Pt/W(001) multilayer system we show that certain...

10.1103/physrevlett.116.177202 article EN Physical Review Letters 2016-04-28

In the field of ultrafast spin dynamics, magnetic inertia (spin nutation) is considered to hold great promise for achieving magnetization switching. However, fundamental origin inertial dynamics unknown. Here, authors derive a complete theory including inertia, from Dirac theory. They show that exists any single particle and it higher-order relativistic spin-orbit coupling effect compared Gilbert damping. Magnetic therefore expected play role only on an ultrashort subpicosecond timescale.

10.1103/physrevb.96.024425 article EN Physical review. B./Physical review. B 2017-07-18

10.1177/030437548701200105 article EN Alternatives Global Local Political 1987-01-01

Abstract Magnetic chiral skyrmions are vortex like spin structures that appear as stable or meta-stable states in magnetic materials due to the interplay between symmetric and antisymmetric exchange interactions, applied field and/or uniaxial anisotropy. Their small size internal stability make them prospective objects for data storage but this, controlled switching skyrmion of opposite polarity topological charge is essential. Here we present a study by an pulse based on discrete model...

10.1038/srep27146 article EN cc-by Scientific Reports 2016-06-08

We put forth a theoretical framework for engineering two-dimensional (2D) second-order topological superconductor (SOTSC) by utilizing heterostructure: incorporating noncollinear magnetic textures between an $s$-wave and 2D quantum spin Hall insulator. It stabilizes the higher order superconducting phase, resulting in Majorana corner modes (MCMs) at four corners of domain. The calculated nonzero quadrupole moment characterizes bulk topology. Subsequently, through unitary transformation,...

10.1103/physrevb.109.l041409 article EN Physical review. B./Physical review. B 2024-01-25

We report on a realistic and rather general scheme where noncollinear magnetic textures proximitized with the most common $s$-wave superconductor can appear as alternative to $p$-wave superconductor---the prime proposal realize two-dimensional (2D) Kitaev model for topological superconductors (TSCs) hosting Majorana flat edge mode (MFEM). A minimal Hamiltonian suitable magnet/superconductor heterostructures reveals robust MFEM within gap of Shiba bands due emergence an effective...

10.1103/physrevb.109.l121301 article EN Physical review. B./Physical review. B 2024-03-11

Abstract Non-magnetic materials without inversion symmetry typically exhibit strong Rashba spin-orbit coupling (SOC), enabling the well-known Edelstein effect where an external electrical current induces transverse spin polarisation. In this study, we demonstrate that electrically induced polarisation in non-magnetic materials, for example, electronic systems within quantum-well geometries, can significantly be influenced by system’s point-group symmetries, such as C n and nv . These...

10.1088/1367-2630/adac88 article EN cc-by New Journal of Physics 2025-01-21

We numerically demonstrate an ultrafast method to create $\textit{single}$ skyrmions in a $\textit{collinear}$ ferromagnetic sample by applying picosecond (effective) magnetic field pulse the presence of Dzyaloshinskii-Moriya interaction. For small samples applied could be either spatially uniform or nonuniform while for large and localized is more effective. examine phase diagram width amplitude nucleation. Our finding ultimately used design future skyrmion-based devices.

10.1103/physrevb.96.140411 article EN Physical review. B./Physical review. B 2017-10-25

Culinary changes and modes of public dining are undergoing rapid in India have begun to reflect some the new strands culture Indian politics. A national cuisine may not emerged but pan-Indian trends visible. Even a rudimentary fast food is crystallising out familiar regional preparations. Simultaneously, concepts what kind can be served on formal occasions cuisines that or cannot provide effective restaurant fare changing relationships between different cuisines.

10.1177/0262728004042760 article EN South Asia Research 2004-05-01
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