560 citations · 4.5k across the 85 of their papers we have counts for
84 papers
Probing the semiconductor-to-dirac semimetal transition in Na-Sb-Bi alloys with x-ray Compton scattering
Aki Pulkkinen, Veenavee Nipunika Kothalawala, Kosuke Suzuki +12
We discuss electron redistribution during the semiconductor-to-Dirac semimetal transition in Na-Sb-Bi alloys using x-ray Compton scattering experiments combined with first-principl…
Magnetism-Enhanced Strong Electron-Phonon Coupling in Infinite-Layer Nickelate
Ruiqi Zhang, Yanyong Wang, Manuel Engel +12
Intriguing analogies between the nickelates and the cuprates provide a promising avenue for unraveling the microscopic mechanisms underlying high- superconductivity. While ele…
Observation of paramagnetic spin-degeneracy lifting in EuZn2Sb2
Milo X. Sprague, Sabin Regmi, Barun Ghosh +9
Taken together, time-reversal and spatial inversion symmetries impose a two-fold spin degeneracy of the electronic states in crystals. In centrosymmetric materials, this degeneracy…
An antiferromagnetic diode effect in even-layered MnBi2Te4
Anyuan Gao, Shao-Wen Chen, Barun Ghosh +26
In a PN junction, the separation between positive and negative charges leads to diode transport. In the past few years, the intrinsic diode transport in noncentrosymmetric polar co…
Electronic structure in a transition metal dipnictide TaAs2
Sabin Regmi, Cheng-Yi Huang, Mojammel A. Khan +11
The family of transition metal dipnictides (TMDs) has been of theoretical and experimental interest because this family hosts topological states and extremely large magnetoresistan…
Unconventional superconducting pairing in a B20 Kramers Weyl semimetal
Sougata Mardanya, Mehdi Kargarian, Rahul Verma +6
Topological superconductors present an ideal platform for exploring nontrivial superconductivity and realizing Majorana boundary modes in materials. However, finding a single-phase…
Topological chiral kagome lattice
Jing-Yang You, Xiaoting Zhou, Tao Hou +8
Chirality, a fundamental structural property of crystals, can induce many unique topological quantum phenomena. In kagome lattice, unconventional transports have been reported unde…
Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure
Anyuan Gao, Yu-Fei Liu, Jian-Xiang Qiu +28
Quantum geometry - the geometry of electron Bloch wavefunctions - is central to modern condensed matter physics. Due to the quantum nature, quantum geometry has two parts, the real…
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…
High- superconductors as a New Playground for High-order Van Hove singularities and Flat-band Physics
Robert S. Markiewicz, Bahadur Singh, Christopher Lane +1
Beyond the two-dimensional (2D) saddle-point Van Hove singularities (VHSs) with logarithmic divergences in the density of states (DOS), recent studies have identified higher-order…
Evolution of high-order Van Hove singularities away from cuprate-like band dispersions and its implications for cuprate superconductivity
Robert S. Markiewicz, Bahadur Singh, Christopher Lane +1
We discuss the evolution of high-order Van Hove singularities (hoVHSs) that carry faster-than logarithmic divergences over a wide range of parameters in cuprate-like electronic ban…
Axion optical induction of antiferromagnetic order
Jian-Xiang Qiu, Christian Tzschaschel, Junyeong Ahn +25
Using circularly-polarized light to control quantum matter is a highly intriguing topic in physics, chemistry and biology. Previous studies have demonstrated helicity-dependent opt…
Surprisingly large anomalous Hall effect and giant negative magnetoresistance in half-topological semimetals
Yanglin Zhu, Cheng-Yi Huang, Yu Wang +9
Large intrinsic anomalous Hall effect (AHE) due to the Berry curvature in magnetic topological semimetals is attracting enormous interest due to its fundamental importance and tech…
Coexistence of phononic Weyl, nodal line, and threefold excitations in chalcopyrite CdGeAs and associated thermoelectric properties
Vikas Saini, Bikash Patra, Bahadur Singh +1
Realization of topologically protected quantum states leads to unprecedented opportunities for fundamental science and device applications. Here, we demonstrate the coexistence of…
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…
Engineering axion insulator phase in superlattices with inversion symmetry breaking
Rajibul Islam, Sougata Mardanya, Alexander Lau +6
We study theoretically the interplay between magnetism and topology in three-dimensional HgTe/MnTe superlattices stacked along the (001) axis. Our results show the evolution of the…
Coupling between colossal charge density wave ordering and magnetism in Ho2Ir3Si5
Sitaram Ramakrishnan, Jin-Ke Bao, Claudio Eisele +14
Ho2Ir3Si5 belongs to the family of three-dimensional (3D) R2Ir3Si5 (R = Lu, Er and Ho) compounds that exhibit a colossal first-order charge density wave (CDW) transition where ther…
Sign change of the anomalous Hall effect and the anomalous Nernst effect in Weyl semimetal CeAlSi
Md Shahin Alam, Amar Fakhredine, Mujeeb Ahmed +9
We report the anomalous Hall effect (AHE) and the anomalous Nernst effect (ANE) data for the non-collinear Weyl semimetal CeAlSi. The anomalous Hall conductivity (σ_ij^A) was measu…
Critical role of magnetic moments on lattice dynamics in YBaCuO
Jinliang Ning, Christopher Lane, Yubo Zhang +6
The role of lattice dynamics in unconventional high-temperature superconductivity is still vigorously debated. Theoretical insights into this problem have long been prevented by th…
Switchable large-gap quantum spin Hall state in two-dimensional MSiZ materials class
Rajibul Islam, Rahul Verma, Barun Ghosh +4
Quantum spin Hall (QSH) insulators exhibit spin-polarized conducting edge states that are topologically protected from backscattering and offer unique opportunities for addressing…
Strongly bound excitons in monolayer MoSiZ (Z = pnictogen)
Pushpendra Yadav, Bramhachari Khamari, Bahadur Singh +2
Reduced dielectric screening in two-dimensional materials enables bound excitons, which modifies their optical absorption and optoelectronic response even at room temperature. Here…
Peierls distortion driven multi-orbital origin of charge density waves in the undoped infinite-layer nickelate
Ruiqi Zhang, Christopher Lane, Johannes Nokelainen +5
Understanding similarities and differences between the cuprate and nickelate superconductors is drawing intense current interest. Competing charge orders have been observed recentl…
Topological spiral magnetism in the Weyl semimetal SmAlSi
Xiaohan Yao Jonathan Gaudet, Rahul Verma, David E. Graf +13
Weyl electrons are intensely studied due to novel charge transport phenomena such as chiral anomaly, Fermi arcs, and photogalvanic effect. Recent theoretical works suggest that Wey…