31 citations · 91 across the 16 of their papers we have counts for
17 papers
Type-II Mirror Chern Insulator in Altermagnets
Amrita Mukherjee, Pritesh Srivastava, Rahul Verma +1
Altermagnets with momentum-dependent spin splitting despite zero net magnetization can support unique topological states under broken time-reversal symmetry. We predict a mirror-sy…
Isolation of spin-valley locked nodal-line fermions in -wave altermagnets
Pritesh Srivastava, Rahul Verma, Bahadur Singh
Crystalline symmetries stabilize topological states with distinct electronic properties, while altermagnets exhibit momentum-dependent spin splitting without net magnetization. Her…
Discovery of Quasi One Dimensional Superconductivity in PtPb3Bi
Shashank Srivastava, Yash Vardhan, Anshu Kataria +11
Quasi one dimensional materials provide a compelling platform where reduced dimensionality stabilizes intertwined topological and superconducting phases. Here we report superconduc…
Topologically nontrivial flat bands and quantum Hall crossovers in square-octagon lattice materials
Amrita Mukherjee, Rahul Verma, Pritesh Srivastava +1
Coexistence of nontrivial topology and flat electronic bands provides a fertile platform for correlated quantum states. The square-octagon lattice hosts Dirac nodes and flat bands…
Emergent spin Hall quantization and high-order van Hove singularities in square-octagonal MAZ
Rahul Verma, Yash Vardhan, Hsin Lin +1
Quantum spin Hall (QSH) insulators are versatile platforms for exploring exotic quantum phases, especially when combined with high-order van Hove singularities (VHSs) that enhance…
Theory of Spiral Magnetism in Weyl semimetal SmAlSi
Lasin Thaivalappil, Rahul Verma, Hsin Lin +2
Recent neutron scattering and thermodynamic measurements suggest that Weyl electrons in the emergent Weyl semimetal SmAlSi mediate unconventional magnetic interactions and induce s…
Ising superconductivity in bulk layered non-centrosymmetric 4H-NbSe2
Chandan Patra, Tarushi Agarwal, Rahul Verma +6
Transition metal dichalcogenides exhibit multiple polymorphs that enable the exploration of diverse quantum states, including valley-selective spin polarization, the valley Hall ef…
Linear magnetoresistance, anomalous Hall effect and de Haas-van Alphen oscillations in antiferromagnetic SmAgGe single crystals
Kanchan Bala, Rahul Verma, Shovan Dan +4
Understanding the interplay among magnetism, electron correlations, and complex electronic structures in rare-earth materials requires both high-quality single crystals and systema…
Observation of superconductivity in a nontrivial approximant quasicrystal
Pavan Kumar Meena, Rahul Verma, Arushi +6
Superconductivity and nontrivial topology are highly sought-after phenomena in quantum materials. While many topological crystalline materials have been found to exhibit supercondu…
Atomically thin obstructed atomic insulators with robust edge modes and quantized spin Hall effect
Rahul Verma, Shin-Ming Huang, Bahadur Singh
Symmetry-protected edge states serve as direct evidence of nontrivial electronic topology in atomically thin materials. Finding these states in experimentally realizable single-pha…
Evidence of electron correlation induced kink in Dirac bands in a non-symmorphic Kondo lattice system, CeAgSb2
Sawani Datta, Khadiza Ali, Rahul Verma +4
We study the behavior of Dirac fermions in the presence of electron correlation in a nonsymmorphic Kondo lattice system, CeAgSb2 employing high-resolution angle-resolved photoemiss…
Exposing nontrivial flat bands and superconducting pairing in infinite-layer nickelates
Ruiqi Zhang, Cheng-Yi Huang, Mehdi Kargarian +5
Flat bands coupled with magnetism and topological orders near or at the Fermi level are well known to drive exotic correlation physics and unconventional superconductivity. Here, b…
Role of effective mass anisotropy in realizing a hybrid nodal-line fermion state
Bikash Patra, Rahul Verma, Shin-Ming Huang +1
Understanding the role of lattice geometry in shaping topological states and their properties is of fundamental importance to condensed matter and device physics. Here we demonstra…
Stripe Helical Magnetism and Two Regimes of Anomalous Hall Effect in NdAlGe
Hung-Yu Yang, Jonathan Gaudet, Rahul Verma +11
We report the magnetic and electronic transport properties of the inversion and time-reversal symmetry breaking Weyl semimetal NdAlGe. This material is analogous to NdAlSi, whose h…
Fast electrically switchable large gap quantum spin Hall states in MGeZ
Rajibul Islam, Ghulam Hussain, Rahul Verma +4
Spin-polarized conducting edge currents counterpropagate in quantum spin Hall (QSH) insulators and are protected against disorder-driven localizations by the time-reversal symmetry…
Orthorhombic charge density wave on the tetragonal lattice of EuAl4
Sitaram Ramakrishnan, Surya Rohith Kotla, Toms Rekis +13
EuAl4 possesses the BaAl4 crystal structure type with tetragonal symmetry I4/mmm. It undergoes a charge-density-wave (CDW) transition at TCDW = 145 K and it features four consecuti…
Behavior of gapped and ungapped Dirac cones in an antiferromagnetic topological metal, SmBi
Anup Pradhan Sakhya, Shiv Kumar, Arindam Pramanik +10
We studied the behavior of nontrivial Dirac fermion states in an antiferromagnetic metal SmBi using angle-resolved photoemission spectroscopy (ARPES). The experimental results exhi…