5 papers
Insulator-metal quantum phase transition in heavy topological insulators
Shouvik Sur, Pallab Goswami
Exponentially localized surface states are the most distinctive property of a crystal with non-trivial band topology. Such surface states play a key role in characterizing topologi…
Bulk Fermi surface of the type-II Weyl semimetal candidate NbIrTe
Rico Schönemann, Yu-Che Chiu, Wenkai Zheng +5
Recently, a new group of layered transition-metal tetra-chalcogenides were proposed, via first principles calculations, to correspond to a new family of Weyl type-II semimetals wit…
Unifying Interacting Nodal Semimetals: A New Route to Strong Coupling
Shouvik Sur, Bitan Roy
We propose a general framework for constructing a large set of nodal-point semimetals by tuning the number of linearly () and (at most) quadratically () dispersing direct…
Quantum Anomalous Hall Insulator Stabilized By Competing Interactions
Shouvik Sur, Shou-Shu Gong, Kun Yang +1
We study the quantum phases driven by interaction in a semimetal with a quadratic band touching at the Fermi level. By combining the density matrix renormalization group (DMRG), an…
Metallic state in bosonic systems with continuously degenerate minima
Shouvik Sur, Kun Yang
In systems above one dimension a continuously degenerate minimum of the single particle dispersion is realized due to one or a combination of system-parameters such as lattice stru…