573 citations · 2.1k across the 30 of their papers we have counts for
30 papers
Time reversal symmetry broken quantum spin hall effect in pseudospin-1 Dirac-Rashba system
Puspita Parui, Bheema Lingam Chittari
The Quantum spin Hall (QSH) phase is conventionally understood to be protected by time-reversal symmetry (TRS). Here, we theoretically investigated the fate of the QSH phase in a p…
Commensurate moiré superlattices in anisotropically strained twisted bilayer graphene
Ayan Mondal, Cristina Joseph, Bheema Lingam Chittari
We investigate how anisotropic strain reorganizes commensurate moiré superlattices and electronic structure in twisted bilayer graphene (TBG) across a finite range of reference twi…
Layer-Dependent Orbital Magnetization in Graphene-Haldane Heterostructures
Sovan Ghosh, Bheema Lingam Chittari
Rhombohedral multilayer graphene (RMG) proximity-coupled to a Haldane substrate provides a platform to investigate the interplay between band topology, layer number, and electric-f…
Near room temperature magnetoelectric response and tunable magnetic anisotropy in the two-dimensional magnet 1T-CrTe2
Fengping Li, Bheema Lingam Chittari, Chao Lei +1
Magnets with controllable magnetization and high critical temperature are essential for practical spintronics devices, among which the two-dimensional 1T-CrTe2 stands out because o…
Tunable Interfacial Thermal Conductance in Graphene/Germanene van der Waals Heterostructure using an Optimized Interlayer Potential
Sapta Sindhu Paul Chowdhury, Sourav Thapliyal, Bheema Lingam Chittari +1
Accurately modeling interfacial thermal transport in van der Waals heterostructures is challenging due to the limited availability of interlayer interaction potentials. We develop…
Magneto transport of pressure induced flatbands in large angle twisted bilayer graphene
Ayan Mondal, Priyanka Sinha, Bheema Lingam Chittari
Twisted bilayer graphene (TBG) exhibits flat electronic bands at the so-called magic angle (), leading to strong electron correlations and emergent quantum phases s…
Gate and Carriers tunable Valley Imbalance in Topological Proximitized Rhombohedral Trilayer Graphene
Sovan Ghosh, Bheema Lingam Chittari
We investigated the electronic structure, Fermi surface topology and the emergence of valley imbalance in rhombohedral trilayer graphene (RTG) induced by the topological proximity…
Valley-polarized Quantum Anomalous Hall and Topological Metal Phase in Rashba induced pseudospin-1 lattice
Puspita Parui, Bheema Lingam Chittari
We study the topological properties of Rashba spin-orbit coupling and exchange coupling induced pseudospin- system Dice lattice under the influence of a staggered electric poten…
Strain induced tunable band gap and optical properties of graphene on hexagonal boron nitride
Priyanka Sinha, Prasanta K. Panigrahi, Bheemalingam Chittari
In this study, we highlight the potential of strain engineering in graphene/hBN (hexagonal Boron nitride) 2D heterostructures, enabling their use as wide-range light absorbers with…
Experimental and Computational Insights Into the Magnetic Anisotropy and Magnetic Behaviour of Layered Room-Temperature Ferromagnet CrTe
Shubham Purwar, Tushar Kanti Bhowmik, Tijare Mandar Rajesh +3
We investigate the structural, magnetocrystalline anisotropy, critical behaviour, and magnetocaloric effect in the layered room-temperature monoclinic ferromagnet CrTe…
Endless Dirac nodal lines and high mobility in kagome semimetal Ni3In2Se2 single crystal
Sanand Kumar Pradhan, Sharadnarayan Pradhan, Priyanath Mal +6
Kagome-lattice crystal is crucial in quantum materials research, exhibiting unique transport properties due to its rich band structure and the presence of nodal lines and rings. He…
Topological properties of nearly flat bands in bilayer lattice
Puspita Parui, Sovan Ghosh, Bheema Lingam Chittari
We study the effect of Haldane flux in the bilayer - lattice system, considering possible non-equivalent, commensurate stacking configurations with a tight-bindin…
Magnetotransport properties of a twisted bilayer graphene in the presence of external electric and magnetic field
Priyanka Sinha, Ayan Mondal, Simão Meneses João +1
We extensively investigate the electronic and transport properties of a twisted bilayer graphene when subjected to both an external perpendicular electric field and a magnetic fiel…
Orbital Hall Conductivity in a Graphene/Haldane and Haldane/Haldane Bilayers
Sovan Ghosh, Bheema Lingam Chittari
We investigate the orbital Hall conductivity in bilayer graphene (G/G) by modifying one or both the layers as Haldane type ( : Graphene/Haldane and $\rm \tilde G/…
Topological flat bands in rhombohedral tetralayer and multilayer graphene on hexagonal boron nitride moire superlattices
Youngju Park, Yeonju Kim, Bheema Lingam Chittari +1
We show that rhombohedral four-layer graphene (4LG) nearly aligned with a hexagonal boron nitride (hBN) substrate often develops nearly flat isolated low energy bands with non-zero…
Nearly flat bands in twisted triple bilayer graphene
Jiseon Shin, Bheema Lingam Chittari, Yunsu Jang +2
We investigate the electronic structure of alternating-twist triple Bernal-stacked bilayer graphene (t3BG) as a function of interlayer coupling , twist angle , interlayer pot…
Modulating Curie Temperature and Magnetic Anisotropy in Nanoscale Layered Cr_{2}Te_{3} Films: Implications for Room-Temperature Spintronics
In Hak Lee, Byoung Ki Choi, Hyuk Jin Kim +18
Nanoscale layered ferromagnets have demonstrated fascinating two-dimensional magnetism down to atomic layers, providing a peculiar playground of spin orders for investigating funda…
Stacking and gate tunable topological flat bands, gaps and anisotropic strip patterns in twisted trilayer graphene
Jiseon Shin, Bheema Lingam Chittari, Jeil Jung
Trilayer graphene with a twisted middle layer has recently emerged as a new platform exhibiting correlated phases and superconductivity near its magic angle. A detailed characteriz…
Topological phases in N-layer ABC-graphene boron-nitride moire superlattices
David Andres Galeano Gonzalez, Bheema Lingam Chittari, Youngju Park +2
Rhombohedral trilayer graphene on hexagonal boron nitride (TLG/BN) hosts gate-tunable, valley-contrasting, nearly flat topological bands that can trigger spontaneous quantu…
Electron-hole asymmetry and band gaps of commensurate double moire patterns in twisted bilayer graphene on hexagonal boron nitride
Jiseon Shin, Youngju Park, Bheema Lingam Chittari +1
Spontaneous orbital magnetism observed in twisted bilayer graphene (tBG) on nearly aligned hexagonal boron nitride (BN) substrate builds on top of the electronic structure resultin…
Gate tunable topological flat bands in twisted monolayer-bilayer graphene
Youngju Park, Bheema Lingam Chittari, Jeil Jung
We investigate the band structure of twisted monolayer-bilayer graphene (tMBG), or twisted graphene on bilayer graphene (tGBG), as a function of twist angles and perpendicular elec…
Magnetoelectric Response of Antiferromagnetic Van der Waals Bilayers
Chao Lei, Bheema Lingam Chittari, Kentaro Nomura +3
We predict that antiferromagnetic bilayers formed from van der Waals (vdW) materials, like bilayer CrI, have a strong magnetoelectric response that can be detected by measuring…
Flatbands in twisted double bilayer graphene
Narasimha Raju Chebrolu, Bheema Lingam Chittari, Jeil Jung
Flatbands with extremely narrow bandwidths on the order of a few mili-electron volts can appear in twisted multilayer graphene systems for appropriate system parameters. Here we in…
Accurate Gap Determination in Monolayer and Bilayer Graphene/h-BN Moire Superlattices
Hakseong Kim, Nicolas Leconte, Bheema L. Chittari +5
High mobility single and few-layer graphene sheets are in many ways attractive as nanoelectronic circuit hosts but lack energy gaps, which are essential to the operation of field-e…