159 citations · 432 across the 18 of their papers we have counts for
18 papers
Modulation of quantum geometry and its coupling to pseudo-electric field by dynamic strain
Surat Layek, Mahesh A. Hingankar, Ayshi Mukherjee +11
Two-dimensional materials are a fertile ground for exploring quantum geometric phenomena, with Berry curvature and its first moment, the Berry curvature dipole, playing a central r…
Layered Topological Antiferromagnetic Metal at Room Temperature -- YbMnGe
Nirmalya Jana, Atasi Chakraborty, Anamitra Mukherjee +1
Metallic antiferromagnets are essential for efficient spintronic applications due to their fast switching and high mobility, yet room-temperature metallic antiferromagnets are rare…
Quantum geometric moment encodes stacking order of moiré matter
Surat Layek, Subhajit Sinha, Atasi Chakraborty +6
Exploring the topological characteristics of electronic bands is essential in condensed matter physics. Moiré materials featuring flat bands provide a versatile platform for engine…
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…
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…
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…
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…
SrLiIrO: a potential quantum spin liquid candidate in the one dimensional iridate family
Abhisek Bandyopadhyay, A. Chakraborty, S. Bhowal +8
Spin-orbit coupling (SOC) offers a large variety of novel and extraordinary magnetic and electronic properties in otherwise `ordinary pool' of heavy ion oxides. Here we present a d…
Failure to achieve the ~=~0 state even in nearly isolated Ir in SrNaIrO: are iridates enough for realizing true - coupling?
Abhisek Bandyopadhyay, Atasi Chakraborty, Sayantika Bhowal +11
Spin-orbit coupling (SOC) often gives rise to interesting electronic and magnetic phases in an otherwise ordinary pool of paramagnetic heavy metal oxides. In presence of strong SOC…
Unusual spin dynamics in the low-temperature magnetically ordered state of AgLiIrO
Atasi Chakraborty, Vinod Kumar, Sanjay Bachhar +7
Recently, there have been contrary claims of Kitaev spin-liquid behaviour and ordered behavior in the honeycomb compound AgLiIrO based on various experimental signature…
Gapless quantum spin liquid in the triangular system SrCuSbO
S. Kundu, Aga Shahee, Atasi Chakraborty +9
We report gapless quantum spin liquid behavior in the layered triangular SrCuSbO (SCSO) system. X-ray diffraction shows superlattice reflections associated with a…
Understanding the Curious Magnetic State of SrOsO
Shreya Das, Anita Halder, Atasi Chakraborty +2
Motivated by the recent report on high T ferromagnetic insulating state of single transition metal containing double perovskite compound, SrOsO (Wakabayashi et. al., Na…
Structural, thermodynamic, and local probe investigations of a honeycomb material AgLiMnO
R. Kumar, Tusharkanti Dey, P. M. Ette +13
The system Ag[LiMn]O belongs to a quaternary 3R-delafossite family and crystallizes in a monoclinic symmetry with space group and the magnetic Mn$^{4…
Unconventional magnetism in the 4d based () honeycomb system AgLiRuO
R. Kumar, Tusharkanti Dey, P. M. Ette +13
We have investigated the thermodynamic and local magnetic properties of the Mott insulating system AgLiRuO containing Ru (4) for novel magnetism.…
Origin of magnetic moments and presence of a resonating valence bond state in BaYIrO
Abhishek Nag, Sayantika Bhowal, M. M. Sala +10
While it was speculated that 5 systems would possess non-magnetic ~=~0 ground state due to strong Spin-Orbit Coupling (SOC), all such systems have invariably shown presence…