560 citations · 4.7k across the 57 of their papers we have counts for
59 papers
Pt-induced semimetallic transport and enhanced thermoelectric response in the half-Heusler alloy YNi_{0.5}Pt_{0.5}Bi
Vikas Chahar, Shivam Rathod, Lankun Wang +11
Half-Heusler alloys provide a versatile platform for tuning electronic and thermal transport through chemical substitution. Here, we investigate the thermoelectric and magnetotrans…
Strong metamagnetic switching and anisotropic magnetotransport in the distorted kagome magnet Tb6Ti4Al43
Lipika, Sneh, Shobha Singh +4
We report a comprehensive investigation of the magnetic, electrical, and thermodynamic properties of single crystalline Tb6Ti4Al43, in which Tb atoms form a distorted kagome lattic…
Bonding Signatures of Incipient Electron Localization in Topological Chiral Semimetals Near the Metal-Insulator Transition
Felix Hoff, Jonathan Frank, Mohit Raghuwanshi +11
How do electronic localization and delocalization compete in solids beyond the traditional limiting cases of metals and iono-covalent insulators? Topological chiral semimetals (TCS…
Complex field-induced magnetic phases and anisotropic magnetotransport in off-stoichiometric CeCuBi2
Vikas Chahar, Shivam Rathod, Sneh +9
We report a detailed study on the structural, angle-dependent magnetic and magnetotransport properties of highly anisotropic off-stoichiometric CeCuBi2 single crystals. Our results…
Quantized Photocurrents in Gapless Topological Matter
Byunghoon Kim, Tenzin Norden, Mohammad Yahyavi +17
The quantum Hall effect establishes that topology can fix a material response to integer multiples of fundamental constants when an energy gap isolates the relevant symmetry-protec…
Intrinsic magnetotransport and orientation dependent topological Hall effect in EuAuBi
Lipika, Sneh, Shobha Singh +3
We report the growth of high-quality single crystals of the magnetic topological semimetal EuAuBi using a Pb flux method, which effectively suppresses the formation of secondary Au…
Berry curvature induced giant anomalous and spin texture driven Hall responses in the layered kagome antiferromagnet GdTi3Bi4
Shobha Singh, Shivam Rathod, Rong chen +5
In recent years, layered kagome magnets have emerged as promising platforms for Berry-curvature engineering and unconventional transport phenomena. Here, we present the single-crys…
Complex spin dynamics induced metamagnetic phase transitions in Dirac semimetal EuAuBi
Lipika, Shobha Singh, Anyesh Saraswati +8
We report a comprehensive investigation of the physical properties of the Dirac semimetal compound EuAuBi single crystals, using neutron diffraction, magnetization, electrical tran…
Ultrahigh Anomalous Nernst Thermopower and Thermal Hall Angle in YbMnBi2
Jiamin Wen, Kaustuv Manna, Dung Vu +5
Thermoelectrics (TEs) are solid-state devices that can realize heat-electricity conversion. Transverse TEs require materials with a large Nernst effect, which typically requires a…
Controllable orbital angular momentum monopoles in chiral topological semimetals
Yun Yen, Jonas A. Krieger, Mengyu Yao +15
The emerging field of orbitronics aims at generating and controlling currents of electronic orbital angular momentum (OAM) for information processing. Structurally chiral topologic…
Anisotropic resistance with a 90-degree twist in a ferromagnetic Weyl semimetal, Co2MnGa
Nicholas P. Quirk, Guangming Cheng, Kaustuv Manna +3
CoMnGa is a ferromagnetic semimetal with Weyl nodal lines identified by ARPES. We studied electrical transport in thin CoMnGa lamellae (10 10 0.4-5 micron…
Parallel spin-momentum locking in a chiral topological semimetal
Jonas A. Krieger, Samuel Stolz, Inigo Robredo +23
Spin-momentum locking in solids describes a directional relationship between the electron's spin angular momentum and its linear momentum over the entire Fermi surface. While ortho…
Observation of an Anomalous Hall Effect in Single-crystal Mn3Pt
Belen E. Zuniga-Cespedes, Kaustuv Manna, Hilary M. L. Noad +5
The Mn3X family of compounds was the first in which a large anomalous Hall effect (AHE) was predicted to arise from a purely antiferromagnetic structure, due to the Berry curvature…
Giant Chern number of a Weyl nodal surface without upper limit
Junzhang Ma, S. -N. Zhang, J. P. Song +15
Weyl nodes can be classified into zero-dimensional (0D) Weyl points (WPs), 1D Weyl nodal lines (WNL) and 2D Weyl nodal surfaces (WNS), which possess finite Chern numbers. Up to dat…
What's knot to like? Observation of a linked loop quantum state
Ilya Belopolski, Guoqing Chang, Tyler A. Cochran +22
Quantum phases can be classified by topological invariants, which take on discrete values capturing global information about the quantum state. Over the past decades, these invaria…
Probing magnetic anisotropy in Kagome antiferromagnetic MnGe with torque magnetometry
Yinshang Liu, Hong Xiao, Aobo Yu +6
We investigate the magnetic symmetry of the topological antiferromagnetic material MnGe by using torque measurements. Below the Neel temperature, detailed angle-dependent torqu…
Helicoid-arc van Hove singularities in topological chiral crystals
Daniel S. Sanchez, Tyler A. Cochran, Ilya Belopolski +14
Van Hove singularity are electronic instabilities that lead to many fascinating interactions, such as superconductivity and charge-density waves. And despite much interest, the nex…
Quasi-symmetry protected topology in a semi-metal
Chunyu Guo, Lunhui Hu, Carsten Putzke +10
The crystal symmetry of a material dictates the type of topological band structures it may host, and therefore symmetry is the guiding principle to find topological materials. Here…
Observation of a singular Weyl point surrounded by charged nodal walls in PtGa
J. -Z. Ma, Q. -S. Wu, M. Song +17
Constrained by the Nielsen-Ninomiya no-go theorem, in all so-far experimentally determined Weyl semimetals (WSMs) the Weyl points (WPs) always appear in pairs in the momentum space…
Three-dimensional quasi-quantized Hall insulator phase in SrSi2
Kaustuv Manna, Nitesh Kumar, Sumanta Chattopadhyay +15
In insulators, the longitudinal resistivity becomes infinitely large at zero temperature. For classic insulators, the Hall conductivity becomes zero at the same time. However, ther…
Observation of a phase transition within the domain walls of ferromagnetic Co3Sn2S2
Changmin Lee, Praveen Vir, Kaustuv Manna +5
The ferromagnetic phase of CoSnS is widely considered to be a topological Weyl semimetal, with evidence for momentum-space monopoles of Berry curvature from transport a…
Broadband optical conductivity of the chiral multifold semimetal PdGa
L. Z. Maulana, Z. Li, E. Uykur +5
We present an optical conductivity study of the multifold semimetal PdGa, performed in a broad spectral range (100 - 20000 cm-1; 12 meV - 2.5 eV) down to T = 10 K. The conductivity…
Topological quantum materials from the viewpoint of chemistry
Nitesh Kumar, Satya N. Guin, Kaustuv Manna +2
Topology, a mathematical concept, has recently become a popular and truly transdisciplinary topic encompassing condensed matter physics, solid state chemistry, and materials scienc…
Direct Measurement of Helicoid Surface States in RhSi using Nonlinear Optics
Dylan Rees, Baozhu Lu, Yue Sun +6
Despite the fundamental nature of the edge state in topological physics, direct measurement of electronic and optical properties of the Fermi arcs of topological semimetals has pos…