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First-Principles Assessment of ZnTe and CdSe as Prospective Tunnel Barriers at the InAs/Al Interface.
ACS Appl Mater Interfaces
January 2025
Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States.
Majorana zero modes are predicted to emerge in semiconductor/superconductor interfaces, such as InAs/Al. Majorana modes could be utilized for fault tolerant topological qubits. However, their realization is hindered by materials challenges.
View Article and Find Full Text PDFUnveiling the impact of Ni doping on the structural, electronic, and magnetic properties of nanocrystalline FeCoOspinel oxide: a combined experimental andinvestigations.
J Phys Condens Matter
December 2024
Department of Physics, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
Article Synopsis
- The study synthesizes nanocrystalline samples of NixFe1-xCo2O4 at varying nickel concentrations via co-precipitation and annealing at 900 °C, revealing different crystallization phases and decreased particle size with more nickel substitution.
- Magnetic properties were analyzed, showing metamagnetic transitions in certain samples and dynamic susceptibility dependent on both nickel content and temperature, indicating complex magnetic states like spin-glass freezing.
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On the Negative Result Experiments in Quantum Mechanics.
Entropy (Basel)
November 2024
Istitute Nazionale di Fisica Nucleare, Sezione di Pisa, Largo Pontecorvo, 3, Ed. C, 56127 Pisa, Italy.
We comment on the so-called negative result experiments (also known as null measurements, interaction-free measurements, and so on) in quantum mechanics (QM), in the light of the new general understanding of the quantum-measurement processes, proposed recently. All experiments of this kind (null measurements) can be understood as improper measurements with an intentionally biased detector set up, which introduces exclusion or selection of certain events. The prediction on the state of a microscopic system under study based on a null measurement is sometimes dramatically described as "wave-function collapse without any microsystem-detector interactions".
View Article and Find Full Text PDFElectronic structure simulations in the cloud computing environment.
J Chem Phys
October 2024
Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99354, USA.
The transformative impact of modern computational paradigms and technologies, such as high-performance computing (HPC), quantum computing, and cloud computing, has opened up profound new opportunities for scientific simulations. Scalable computational chemistry is one beneficiary of this technological progress. The main focus of this paper is on the performance of various quantum chemical formulations, ranging from low-order methods to high-accuracy approaches, implemented in different computational chemistry packages and libraries, such as NWChem, NWChemEx, Scalable Predictive Methods for Excitations and Correlated Phenomena, ExaChem, and Fermi-Löwdin orbital self-interaction correction on Azure Quantum Elements, Microsoft's cloud services platform for scientific discovery.
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