46 citations · 204 across the 13 of their papers we have counts for
12 papers · 1 filter
Symmetry-Protected Phonon Topology and Low Lattice Thermal Conductivity in Square-Octagonal Chalcogenides
Nair Surabhi Suresh, Mondal Chiranjith, Alam Aftab +1
Unconventional lattice geometries provide an effective platform for realizing symmetry-protected topological phonon states that can strongly influence lattice heat transport. In th…
Unremovable linked nodal structures protected by crystalline symmetries in stacked bilayer graphene with Kekulé texture
Chiranjit Mondal, Sunje Kim, Bohm-Jung Yang
Linking structure is a new concept characterizing topological semimetals, which indicates the interweaving of gap-closing nodes at the Fermi energy () with other nodes below $…
Coexistence of Multifold and Multidimensional Topological Phonons in KMgBO
P. C. Sreeparvathy, Chiranjit Mondal, Chanchal K. Barman +1
Topological interpretations of phonons facilitate a new platform for novel concepts in phonon physics. Though there are ubiquitous set of reports on topological electronic excitati…
Intertwined non-trivial band topology and giant Rashba spin splitting
Chiranjit Mondal, Chanchal K. Barman, Aftab Alam +1
Composite quantum compounds (CQCs) have become an important avenue for the investigation of inter-correlation between two distinct phenomenon in physics. Topological superconductor…
Symmetry driven topological phases in XAgBi (X=Ba,Sr): An Ab-initio hybrid functional calculations
Chanchal K. Barman, Chiranjit Mondal, Biswarup Pathak +1
Density functional theory (DFT) approaches have been ubiquitously used to predict topological order and non-trivial band crossings in real materials, like Dirac, Weyl semimetals an…
Symmetry protection and giant Fermi arcs from multifold fermions in binary, ternary, and quaternary compounds
Chanchal K. Barman, Chiranjit Mondal, Sumiran Pujari +2
Higher-fold chiral fermions that go beyond two-fold Weyl fermions have recently been reported in crystalline systems. Here, we focus on such excitations in several binary, ternary…
Type-II Dirac states in full Heusler compounds XInPd2 (X = Ti, Zr and Hf)
Chiranjit Mondal, Chanchal K. Barman, Biswarup Pathak +1
We predict three full Heusler compounds XInPd2 (X = Zr, Hf and Ti) to be potential candidates for type-II Dirac semimetals. The crystal symmetry of these compounds have appropriate…
Unique Dirac and Triple point fermiology in simple transition metals and their binary alloys
Chiranjit Mondal, Chanchal K. Barman, Shuvam Sarkar +3
Noble metal surfaces (Au, Ag and Cu etc.) have been extensively studied for the Shockley type surface states (SSs). Very recently, some of these Shockley SSs have been understood f…
Broken symmetry driven topological semi-metal to gaped phase transitions in SrAgAs
Chiranjit Mondal, C. K. Barman, Aftab Alam +1
We show the occurence of Dirac, Triple point, Weyl semimetal and topological insulating phase in a single ternary compound using specific symmetry preserving perturbations. Based o…
Quaternary Heusler Alloy: An Ideal Platform to Realize Triple Point Fermion
C. K. Barman, Chiranjit Mondal, Biswarup Pathak +1
The existence of three fold rotational, mirror and time reversal symmetries often give rise to the triply degenerate nodal point (TP) in the band structure of a material. Based on…
Topological Nontrivial Phase in Hexagonal Antiperovskites A3BiB (A=Ba,Sr; B=P,N)
C. K. Barman, Chiranjit Mondal, Vijay Singh +2
In this article, we predict the occurrence of topological non-trivial phase in hexagonal antiperovskite systems. By carefully investigating the evolution of band structure, we have…
Emergence of Topological insulator and Nodal line semi-metal states in XX'Bi (X=Na, K, Rb, Cs; X'=Ca, Sr)
Chiranjit Mondal, C. K. Barman, Sourabh Kumar +2
In this letter, we predict the emergence of non-trivial band topology in the family of XX'Bi compounds having (\# 189) space group. Using first principles calcula…