337 citations · 1k across the 27 of their papers we have counts for
27 papers
Unconventional superconducting pairing in a B20 Kramers Weyl semimetal
Sougata Mardanya, Mehdi Kargarian, Rahul Verma +6
Topological superconductors present an ideal platform for exploring nontrivial superconductivity and realizing Majorana boundary modes in materials. However, finding a single-phase…
Nonlinear Valley Hall Effect
Kamal Das, Koushik Ghorai, Dimitrie Culcer +1
The valley Hall effect arises from valley contrasting Berry curvature and requires inversion symmetry breaking. Here, we propose a nonlinear mechanism to generate a valley Hall cur…
Room Temperature Ferroelectricity, Ferromagnetism, and Anomalous Hall Effect in Half-metallic Monolayer CrTe
Imran Ahamed, Atasi Chakraborty, Pushpendra Yadav +4
Two-dimensional materials hosting ferroelectricity and ferromagnetism are crucial for low-power and high-speed information processing technologies. However, intrinsic 2D multiferro…
Observation of highly anisotropic bulk dispersion and spin-polarized topological surface states in CoTe2
Atasi Chakraborty, Jun Fujii, Chia-Nung Kuo +4
We present CoTe2 as a new type-II Dirac semimetal supporting Lorentz symmetry violating Dirac fermions in the vicinity of the Fermi energy. By combining first principle ab-initio c…
Discovery of a magnetic Dirac system with large intrinsic non-linear Hall effect
Federico Mazzola, Barun Ghosh, Jun Fujii +9
Magnetic materials exhibiting topological Dirac fermions are attracting significant attention for their promising technological potential in spintronics. In these systems, the comb…
Observation of time-reversal symmetric Hall effect in graphene-WSe2 heterostructures at room temperature
Priya Tiwari, Divya Sahani, Atasi Chakraborty +5
In this letter, we provide experimental evidence of the time-reversal symmetric Hall effect in a mesoscopic system, namely high-mobility graphene/WSe heterostructures. This lin…
Intrinsic nonreciprocal bulk plasmons in noncentrosymmetric magnetic systems
Debasis Dutta, Atasi Chakraborty, Amit Agarwal
Nonreciprocal plasmonics enables one-way light propagation at the nanoscale and it is an essential building block for photonics applications. Here, we explore intrinsic nonreciproc…
Modeling Motivational Interviewing Strategies On An Online Peer-to-Peer Counseling Platform
Raj Sanjay Shah, Faye Holt, Shirley Anugrah Hayati +4
Millions of people participate in online peer-to-peer support sessions, yet there has been little prior research on systematic psychology-based evaluations of fine-grained peer-cou…
Large nonsaturating magnetoresistance, weak anti-localization and non-trivial topological states in SrAlSi
Sudip Malick, A. B. Sarkar, Antu Laha +5
We explore the electronic and topological properties of single crystal SrAlSi using magnetotransport experiments in conjunction with first-principle calculations. We find t…
Strongly bound excitons in monolayer MoSiZ (Z = pnictogen)
Pushpendra Yadav, Bramhachari Khamari, Bahadur Singh +2
Reduced dielectric screening in two-dimensional materials enables bound excitons, which modifies their optical absorption and optoelectronic response even at room temperature. Here…
Nonlinear anomalous Hall effects probe topological phase-transitions in twisted double bilayer graphene
Atasi Chakraborty, Kamal Das, Subhajit Sinha +3
Nonlinear anomalous Hall effect is the Berry curvature dipole induced second-order Hall voltage or temperature difference in response to a longitudinal electric field or temperatur…
Tunable interband and intraband plasmons in twisted double bilayer graphene
Atasi Chakraborty, Debasis Dutta, Amit Agarwal
Flat bands in twisted moire superlattices support a variety of topological and strongly correlated phenomena along with easily tunable electrical and optical properties. Here, we d…
Nonlinear magnetoconductivity in Weyl and multi-Weyl semimetal in quantizing magnetic field
Sunit Das, Kamal Das, Amit Agarwal
Magnetotransport and magneto-optics experiments offer a very powerful probe for studying the physical properties of materials. Here, we investigate the second-order nonlinear magne…
Berry curvature dipole senses topological transition in a moiré superlattice
Subhajit Sinha, Pratap Chandra Adak, Atasi Chakraborty +8
Topological aspects of electron wavefunction play a crucial role in determining the physical properties of materials. Berry curvature and Chern number are used to define the topolo…
Magnetically tunable Dirac and Weyl fermions in the Zintl materials family
Anan Bari Sarkar, Sougata Mardanya, Shin-Ming Huang +7
Recent classification efforts encompassing crystalline symmetries have revealed rich possibilities for solid-state systems to support a tapestry of exotic topological states. Howev…
Collective plasmonic modes in the chiral multifold fermionic material CoSi
Debasis Dutta, Barun Ghosh, Bahadur Singh +4
Plasmonics in topological semimetals offers exciting opportunities for fundamental physics exploration as well as for technological applications. Here, we investigate plasmons in t…
Strain-tunable in-plane ferroelectricity and lateral tunnel junction in monolayer group-IV monochalcogenides
Achintya Priydarshi, Yogesh Singh Chauhan, Somnath Bhowmick +1
2D Ferroelectric materials are promising for designing low-dimensional memory devices. Here, we explore strain tunable ferroelectric properties of group-IV monochalcogenides MX (M=…
Two-dimensional MoSi2N4: An Excellent 2D Semiconductor for Transistors
Keshari Nandan, Barun Ghosh, Amit Agarwal +2
We report the performance of field-effect transistors (FETs), comprised of mono-layer of recently synthesized layered two-dimensional MoSi2N_4 as channel material, using the first…
Topological states in superlattices of HgTe-class materials for engineering three-dimensional flat bands
Rajibul Islam, Barun Ghosh, Giuseppe Cuono +7
In search of materials with three-dimensional flat band dispersions, using {\em ab-initio} computations, we investigate how topological phases evolve as a function of hydrostatic p…
Photonic Topological Transitions and Epsilon-Near-Zero Surface Plasmons in Type-II Dirac Semimetal NiTe
Carlo Rizza, Debasis Dutta, Barun Ghosh +8
Compared to artificial metamaterials, where nano-fabrication complexities and finite-size inclusions can hamper the desired electromagnetic response, several natural materials like…
Magnetic Topological Semimetal Phase with Electronic Correlation Enhancement in SmSbTe
Krishna Pandey, Debashis Mondal, John William Villanova +14
The ZrSiS family of compounds hosts various exotic quantum phenomena due to the presence of both topological nonsymmorphic Dirac fermions and nodal-line fermions. In this material…
IRLCov19: A Large COVID-19 Multilingual Twitter Dataset of Indian Regional Languages
Deepak Uniyal, Amit Agarwal
Emerged in Wuhan city of China in December 2019, COVID-19 continues to spread rapidly across the world despite authorities having made available a number of vaccines. While the cor…
Layer Hall effect in a 2D topological Axion antiferromagnet
Anyuan Gao, Yu-Fei Liu, Chaowei Hu +33
While ferromagnets have been known and exploited for millennia, antiferromagnets (AFMs) were only discovered in the 1930s. The elusive nature indicates AFMs' unique properties: At…
Competing magnetic interactions and magnetocaloric effect in HoSn
Suman Mondal, Pushpendra Yadav, Anan Bari Sarkar +4
The rare-earth intermetallic compound HoSn demonstrates fascinating magnetic properties which include temperature-driven multiple magnetic transitions and field driven meta…