Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Nanostructures of the misfit-layered compound (MLC) LaS-TaS are brought to breakdown by application of high electrical currents within a transmission electron microscope. Imaging, diffraction, and spectroscopy techniques are employed to study their decomposition process and the resulting structures. The main decomposition route is the breakdown of the TaS layers, which induces the formation of metallic Ta on the surface of the nanostructures when the critical current density is surpassed. This observation confirms the assumption that TaS is the current-carrying layer in these types of MLCs. The different behavior of tubular 1D and 2D structures is revealed, and a metallic glass phase made of La, Ta, and S could be observed upon exceeding a threshold current. The work shows how in situ transmission electron microscopy can help understand the breakdown mechanism of electrical devices or connectors.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12319908 | PMC |
| http://dx.doi.org/10.1021/acs.jpcc.5c03498 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Unraveling the Decomposition Pathways of LaS-TaS Misfit-Layered Compound Nanostructures under Extreme Electrical Currents by In Situ TEM.
J Phys Chem C Nanomater Interfaces
July 2025
Instituto de Nanociencia y Materiales de Aragon (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain.
Nanostructures of the misfit-layered compound (MLC) LaS-TaS are brought to breakdown by application of high electrical currents within a transmission electron microscope. Imaging, diffraction, and spectroscopy techniques are employed to study their decomposition process and the resulting structures. The main decomposition route is the breakdown of the TaS layers, which induces the formation of metallic Ta on the surface of the nanostructures when the critical current density is surpassed.
View Article and Find Full Text PDFMisfit layered superconductor (PbSe)(NbSe) with possible layer-selective FFLO state.
Nat Commun
July 2025
Research Institute for Interdisciplinary Science, Okayama University, Okayama, Japan.
Two-dimensional (2D) superconductors are known for their novel emergent phenomena, however, lack of experimental probes beyond resistivity has hindered further exploration of diverse superconducting states. Bulk 2D superconductors, with superconducting layers separated by non-superconducting layers, offer a unique opportunity to break this limit. Here, we synthesized a single crystal of misfit layered compound (PbSe)(NbSe), composed of alternately stacked tri-layer NbSe and non-superconducting block layers with incompatible unit cells.
View Article and Find Full Text PDFConduction Band Convergence and Modular Nanostructures: Driving High Thermoelectric Performance in n-Type PbSe.
Angew Chem Int Ed Engl
September 2025
New Chemistry Unit, International Centre for Materials Science and School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore, 560064, India.
n-type lead chalcogenides showing high thermoelectric performance are rare due to the larger energy offset between the two lowest energy conduction bands minima, leaving ample opportunity to modulate electronic structure for improving their thermoelectric performance. Here, we present a remarkable thermoelectric figure of merit (zT) of ∼1.8 at 873 K in n-type PbSe doped with MoCl by modulation of the conduction bands, while simultaneously suppressing the phonon transport.
View Article and Find Full Text PDFTransport and thermoelectric signatures of Ising superconductivity and charge density wave in the misfit layered compound(SnS)1.15TaS2.
J Phys Condens Matter
June 2025
School of Physical Science and Technology, Soochow University, Suzhou 215006, People's Republic of China.
Misfit layered compounds based on transition metal dichalcogenides (TMDs) provide a rich platform for exploring emergent quantum phases, such as superconductivity and charge density wave (CDW) order. While many parent TMD compounds host both superconductivity and CDW, their misfit analogs often preserve only superconductivity. In this work, we present a comprehensive investigation of the misfit compound(SnS)1.
View Article and Find Full Text PDFStructure and properties of tubular structures based on the quaternary misfit layered compound Sm Y S-TaS.
RSC Adv
March 2025
Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza Zaragoza Spain
Misfit layered compounds (MLCs) are incommensurate super-lattices made up of two repeating subunits and are promising for different applications due to the possibility of a synergetic combination of the properties of the employed sublayers. A means of fine-tuning a specific MLC is to alloy one of the elements in the system. In this study, quaternary MLCs made of Sm Y S-TaS were successfully synthesized and the resulting structures were characterized in detail, with a specific focus on tubular structures.
View Article and Find Full Text PDF