159 citations · 395 across the 9 of their papers we have counts for
9 papers
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…
Superconducting magic-angle twisted trilayer graphene hosts competing magnetic order and moiré inhomogeneities
Ayshi Mukherjee, Surat Layek, Subhajit Sinha +13
The microscopic mechanism of superconductivity in the magic-angle twisted graphene family, including magic-angle twisted trilayer graphene (MATTG), is poorly understood. Properties…
Tunable moiré materials for probing Berry physics and topology
Pratap Chandra Adak, Subhajit Sinha, Amit Agarwal +1
Berry curvature physics and quantum geometric effects have been instrumental in advancing topological condensed matter physics in recent decades. Although Landau level-based flat b…
Perpendicular electric field drives Chern transitions and layer polarization changes in Hofstadter bands
Pratap Chandra Adak, Subhajit Sinha, Debasmita Giri +10
Moiré superlattices engineer band properties and enable observation of fractal energy spectra of Hofstadter butterfly. Recently, correlated-electron physics hosted by flat bands in…
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…
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…
Bulk valley transport and Berry curvature spreading at the edge of flat bands
Subhajit Sinha, Pratap Chandra Adak, R. S. Surya Kanthi +6
2D materials based superlattices have emerged as a promising platform to modulate band structure and its symmetries. In particular, moiré periodicity in twisted graphene systems pr…
Facile deterministic cutting of 2D materials for twistronics using a tapered fibre scalpel
L. D. Varma Sangani, R. S. Surya Kanthi, Pratap Chandra Adak +5
We present a quick and reliable method to cut 2D materials for creating 2D twisted heterostructures and devices. We demonstrate the effectiveness of using a tapered fibre scalped f…
Tunable bandwidths and gaps in twisted double bilayer graphene system on the verge of correlations
Pratap Chandra Adak, Subhajit Sinha, Unmesh Ghorai +5
We use temperature-dependent resistivity in small-angle twisted double bilayer graphene to measure bandwidths and gaps of the bands. This electron-hole asymmetric system has one se…