William R. Meier

Flux Growth Casting: A Technique for Controlling Size and Morphology of Second-phase Reinforcement Particles in Aluminum Cast Alloys

Elizabeth Heon, Max L. Neveau, William R. Meier, Emma Counce et autres

Incommensurate Transverse Peierls Transition and Signature of Chiral Charge Density Wave in EuAl4

Fazhi Yang, Kaifa Luo, Weizhe Zhang, Xiaoyu Guo et autres

In one-dimensional quantum materials, electrons and lattices can undergo a Peierls transition, a translational symmetry-breaking instability traditionally understood through electron coupling to longitudinal acoustic phonons. Recently, this paradigm has been revised in topological semimetals, where transverse acoustic phonons couple to p-orbital electrons, …

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Fermi-surface driven frustrations in charge ordered kagome metal LuNb 6 Sn 6

Fazhi Yang, Hengxin Tan, Anupam Kundu, Subin Kim et autres

Electron scattering near the Fermi surface strongly reshapes lattice dynamics in quantum materials (see image). By combining real- and momentum-space measurements and first-principle calculations, the authors uncover charge density wave formation in the kagome metal LuNb${}_{6}$Sn${}_{6}$. The Fermi surface topology generates frustrated …

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Impact of thermal annealing on magnetic properties in the nanostructured compositionally complex spinel cobaltites ( Mg 0.2 Mn 0.2 Fe 0.2 Cu 0.2 Zn 0.2 ) Co 2 O 4

Xin Wang, Cameron S. Jorgensen, Corisa Kons, Peter Carl Metz et autres

Exploring the controllable aspects of local atomic structure and chemical ordering and their correlations with functional properties is crucial for harnessing the potential of complex oxides in the development of advanced materials. In this work, we have investigated the sensitivity of the …

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Generative Intelligence

William R. Meier

Generative intelligence is a conversational agent developed by OpenAI in November 2022. This chapter explores the current economics of the chemical industry worldwide and examines how Artificial Initelligence (AI), with a particular focus on ChatGPT, is poised to revolutionize the sector. AI …

Diverse magnetic phase diagram and anomalous Hall effect in antiferromagnetic LuMn 6 Sn 6

Shirin Mozaffari, Seung-Hwan Do, Richa P. Madhogaria, Aikaterini Flessa et autres

The interactions between conduction electrons and magnetism can significantly enhance the Hall signal, a phenomenon known as the anomalous Hall effect (AHE). While the AHE is generally not expected in antiferromagnets, a large AHE is observed in certain antiferromagnets with noncollinear spin …

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Discovery of an intermediate nematic state in a bilayer kagome metal ScV6Sn6

Camron Farhang, William R. Meier, Jiangxu Li, Yudong Wu et autres

Abstract Nematicity, spontaneous breaking of rotational symmetry, is a ubiquitous phenomenon in correlated quantum matter. Here we show a phase transition in high-quality ScV6Sn6 bilayer kagome metal at a temperature $${T}^{*}$$ T * , occurring seven Kelvins below the charge density wave …

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Pressure suppresses the density wave order in kagome metal LuNb 6 Sn 6

William R. Meier, David E Graf, Brenden R. Ortiz, Shirin Mozaffari et autres

The density waves that develop in kagome metals ${\mathrm{ScV}}_{6}{\mathrm{Sn}}_{6}$ and ${\mathrm{LuNb}}_{6}{\mathrm{Sn}}_{6}$ at low temperature appear to arise from underfilled atomic columns within a V-Sn or Nb-Sn scaffolding. Compressing this network with applied pressure in ${\mathrm{ScV}}_{6}{\mathrm{Sn}}_{6}$ suppressed the structural transition temperature by constraining …

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Subtleties in the structure and magnetic properties of the triple conducting perovskite, BaC o 0.4 F e 0.4 Z r 0.1 Y 0.1 O 3 – δ

Bernadette R. Cladek, Kennedy Agyekum, Yewon Shin, William R. Meier et autres

Due, in part, to its simultaneous transport of protons, electrons, and oxygen ions, $\mathrm{BaC}{\mathrm{o}}_{0.4}\mathrm{F}{\mathrm{e}}_{0.4}\mathrm{Z}{\mathrm{r}}_{0.1}{\mathrm{Y}}_{0.1}{\mathrm{O}}_{3--\ensuremath{\delta}}$ (BCFZY4411) is an archetypal triple-conducting oxide (TCO) and a promising candidate for the air electrode of protonic ceramic electrochemical cells. While the average nuclear structure of BCFZY4411, a …

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Electrical transport and torque magnetometry studies of the kagome compound LuV 6 Sn 6 under high magnetic fields

C. K. Phillips, Kyryl Shtefiienko, Shirin Mozaffari, Richa P. Madhogaria et autres

We present a comprehensive investigation of the kagome metal ${\mathrm{LuV}}_{6}{\mathrm{Sn}}_{6}$ through magnetotransport and torque magnetometry studies in magnetic fields up to 41 T and temperatures as low as 0.3 K. Magnetoresistance measurements up to 31 T reveal clear Shubnikov--de Haas (SdH) oscillations …

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Correction to “Stability Frontiers in the AM6X6 Kagome Metals: The LnNb6Sn6 (Ln:Ce–Lu,Y) Family and Density-Wave Transition in LuNb6Sn6”

Brenden R. Ortiz, William R. Meier, Ganesh Pokharel, Juan R. Chamorro et autres

Discovery of an Intermediate Nematic State in a Bilayer Kagome Metal ScV6Sn6

Camron Farhang, William R. Meier, Jiangxu Li, Yudong Wu et autres

Nematicity, where rotational symmetry of the crystal lattice is spontaneously broken, is a ubiquitous phenomenon in correlated quantum matter, often intertwining with other orders to produce a richer spectrum of phases. Here we report a new phase transition in high-quality ScV6Sn6 bilayer …