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Observation of topological nodal-loop state in RAs3 (R = Ca, Sr)
M. Mofazzel Hosen, Baokai Wang, Gyanendra Dhakal +8
Topological nodal-line semimetals (NLSs) are unique materials, which harbor one-dimensional line nodes along with the so-called drumhead surface states arising from nearly dispersi…
Topological Hourglass Dirac Semimetal in the Nonpolar Phase of AgBiO
Bahadur Singh, Barun Ghosh, Chenliang Su +3
Materials with tunable charge and lattice degrees of freedom provide excellent platforms for investigating multiple phases that can be controlled via external stimuli. We show how…
Antiferromagnetic Ground State of LaCuO: A Parameter-free Ab Initio Description
Christopher Lane, James W. Furness, Ioana Gianina Buda +5
We show how an accurate first-principles treatment of the antiferromagnetic (AFM) ground state of LaCuO can be obtained without invoking any free parameters such as the Hub…
Nature of the positron state in CdSe quantum dots
Wenqin Shi, Vincent Callewaert, Bernardo Barbiellini +11
Previous studies have shown that positron-annihilation spectroscopy is a highly sensitive probe of the electronic structure and surface composition of ligand-capped semiconductor Q…
Tunable double-Weyl Fermion semimetal state in the SrSi materials class
Bahadur Singh, Guoqing Chang, Tay-Rong Chang +5
We discuss first-principles topological electronic structure of noncentrosymmetric SrSi materials class based on the hybrid exchange-correlation functional. Topological phase d…
Starfruit-like nodal semimetal to Dirac and Weyl semimetal state in CaAuAs
Bahadur Singh, Sougata Mardanya, Chenliang Su +3
Band-crossings occurring on a mirror plane are compelled to form a nodal loop in the momentum space without spin-orbit coupling (SOC). In the presence of other equivalent mirror pl…