A5001410898- Rare-earth and actinide compounds
- Topological Materials and Phenomena
- Iron-based superconductors research
- Physics of Superconductivity and Magnetism
- 2D Materials and Applications
- MXene and MAX Phase Materials
- Inorganic Chemistry and Materials
- Magnetic properties of thin films
- Advanced Condensed Matter Physics
- Boron and Carbon Nanomaterials Research
- Electronic and Structural Properties of Oxides
- Advanced Materials Characterization Techniques
- Graphene research and applications
- Superconductivity in MgB2 and Alloys
Ames National Laboratory
2019-2024
Iowa State University
2019-2024
The recent discovery of Fermi arcs and new magnetic bands splitting in antiferromagnet NdBi has opened up avenues for exploration. This study shows that these uncharted effects are not restricted to NdBi, but also emerge other rare-earth monopnictides. Also, it the relative intensity scale with moments elements.
The recent discovery of unconventional surface-state pairs, which give rise to Fermi arcs and spin textures, in antiferromagnetically ordered NdBi raised the interest rare-earth monopnictides. Several scenarios antiferromagnetic (AFM) order have been suggested explain origin these states with some them being consistent presence nontrivial topologies. In this paper, we use angle-resolved photoemission spectroscopy (ARPES) density-functional-theory (DFT) calculations investigate electronic...
We use tunable, vacuum ultraviolet laser based angle-resolved photoemission spectroscopy and density functional theory (DFT) calculations to study the electronic properties of Dirac semimetal candidate cubic ${\mathrm{PtBi}}_{2}$. In addition bulk states we also find surface in ${\mathrm{PtBi}}_{2}$, which is expected as ${\mathrm{PtBi}}_{2}$ was theoretically predicated be a semimetal. The are well reproduced from DFT band calculations. Interestingly, topological form Fermi contours rather...
The interest in the rare-earth monopnictides was boosted after discovery of unconventional surface-state pairs antiferromagnetically ordered NdBi. In contrast to other materials which such states were reported, CeBi is known have multiple antiferromagnetic phases. this study, we perform angle-resolved photoemission spectroscopy (ARPES) measurements conjunction with density functional theory (DFT) calculations investigate evolution electronic structure upon a series (AFM) transitions. We find...
We use high-resolution angle-resolved photoemission spectroscopy (ARPES) and density functional theory (DFT) to investigate the electronic structure of charge wave (CDW) system ${\mathrm{LaSb}}_{2}$. This compound is among an interesting group materials that manifests both a CDW transition lower temperature superconductivity. find DFT calculations be in good agreement with our ARPES data. The Fermi surface ${\mathrm{LaSb}}_{2}$ consists two small hole pockets close...
We use high-resolution angle resolved photoemission spectroscopy (ARPES) and density functional theory (DFT) to investigate the electronic structure of charge wave (CDW) system LaSb$_2$. This compound is among an interesting group materials that manifests both a CDW transition lower temperature superconductivity. find DFT calculations be in good agreement with our ARPES data. The Fermi surface LaSb$_2$ consists two small hole pockets close $\Gamma$ four larger near Brillouin zone (BZ)...
Quantum materials with stacking van der Waals (vdW) layers that can host non-trivial band structure topology and magnetism have shown many interesting properties. Here using high-throughput density functional theory calculations, we design predict tetragonal vdW-layered quantum in the MPd$_5$I$_2$ (M=Ga, In 3d transition metals). Our study shows besides known AlPd$_5$I$_2$, -MPd$_5$- structural motif of three-layer slabs separated by two I a variety metal elements giving arise to topological...
EuAl$_4$ is proposed to host a topological Hall state. This material also undergoes four consecutive antiferromagnetic (AFM) transitions upon cooling below TN1 = 15.4 K in the presence of charge density wave (CDW) order that sets TCDW 140 K. We use angle-resolved photoemission spectroscopy and density-functional-theory calculations study how magnetic ordering affects electronic properties EuAl$_4$. found changes band structure each AFM including splitting, renormalizations, appearance new...
<title>Abstract</title> Quantum materials with stacking van der Waals (vdW) layers that can host non-trivial band structure topology and magnetism have shown many interesting properties. Here using high-throughput density functional theory calculations, we design predict tetragonal vdW-layered quantum in the MPd<sub>5</sub>I<sub>2</sub> (M = Ga, In 3<italic>d</italic> transition metals). Our study shows besides known AlPd<sub>5</sub>I<sub>2</sub>, -MPd<sub>5</sub>- structural motif of...
The recent discovery of unconventional surface state pairs, which give rise to Fermi arcs and spin textures, in antiferromagnetically ordered NdBi raised the interest rare-earth monopnictides. Several scenarios antiferromagnetic order have been suggested explain origin these states with some them being consistent presence non-trivial topologies. In this study, we use angle-resolved photoemission spectroscopy (ARPES) density-functional-theory (DFT) calculations investigate electronic...