Direct observation of the f–c hybridization in the ordered uranium films on W(110)*

Chen, Qiuyun; Tan, Shanjun; Feng, Wei; Luo, Lizhu; Zhu, Xiegang; Lai, Xinchun

doi:10.1088/1674-1056/28/7/077404

Cited by 11 publications

(12 citation statements)

References 29 publications

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“…Similar behavior could be found in the other CDW materials [5,33,34]. From the angleresolved photoemission spectroscopy of uranium films on W(110), large spectral weight was observed around the Fermi level [32].…”

Section: Introductionsupporting

confidence: 79%

“…In bulk single crystal, strain can be applied by attaching materials to piezoelectric substrates. While in thin films, strain For uranium, the epitaxial thin film, in which the strain is present, has already led to the discovery of a wide range of new structural, magnetic, and electronic phenomena [21,[28][29][30][31][32]. The hcp phase of uranium, which does no exist in the bulk, could be stabilized on Gd/Nb substrate [31].…”

Section: Introductionmentioning

confidence: 99%

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Effect of strain on charge density wave order in α-U

Xie,

Yuan,

Qiu

2021

Preprint

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The effect of strain on charge density wave (CDW) order in α-U is investigated within the framework of relativistic density-functional theory. The energetical stability of α-U with CDW distortion is enhanced by the tensile strain along a and b directions, which is similar to the case of negative pressure and normal. However, the tensile strain along c direction suppresses the energetical stability of CDW phase. This abnormal effect could be understood from the emergence of a new one-dimensional atomic chain along c direction in α-U. Furthermore, this effect is supported by the calculations of Fermi surface and phonon mode, in which the topological objects and the dynamical instability show opposite behavior between strain along a/b and c directions.

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Section: Introductionsupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Effect of strain on charge density wave order in α-U

Xie,

Yuan,

Qiu

2021

Preprint

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“…STM/STS results showed that the U density of states close to the Fermi level is dominated by the 5f states [129]. STS and ARPES showed both the Fermi surface topology and electronic structure of ordered α-U films [134]. ARPES studies of epitaxial thin films of the oxides PuO 2 and NpO 2 [20,135], and uranium carbide (UC 2 ), reveal the importance of the underlying substrate structure in stabilizing the epitaxial film [136].…”

Section: B Characterization Of Thin Filmsmentioning

confidence: 99%

Advances in actinide thin films: synthesis, properties, and future directions

Vallejo¹,

Kabir²,

Poudel³

et al. 2022

Preprint

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Actinide-based compounds exhibit unique physics due to the presence of 5f electrons, and serve in many cases as important technological materials. Targeted thin film synthesis of actinide materials has been successful in generating high-purity specimens in which to study individual physical phenomena. These films have enabled the study of the unique electron configuration, strong mass renormalization, and nuclear decay in actinide metals and compounds. The growth of these films, as well as their thermophysical, magnetic, and topological properties, have been studied in a range of chemistries, albeit far fewer than most classes of thin film systems. This relative scarcity is the result of limited source material availability and safety constraints associated with the handling of radioactive materials. Here, we review recent work on the synthesis and characterization of actinide-based thin films in detail, describing both synthesis methods and modelling techniques for these materials. We review reports on pyrometallurgical, solution-based, and vapor deposition methods. We highlight the current state-of-the-art in order to construct a path forward to higher quality actinide thin films and heterostructure devices.

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“…The impedance of an electrolyte depends on its temperature and measurement frequency . Therefore, a stable and tightly controlled temperature is very important for impedimetric measurements where the sensor needs to detect a change in impedance caused by the presence of its bio‐molecular targets.…”

Section: Materials and Fabricationmentioning

confidence: 99%

A Novel Modular Device for Biological Impedance Measurements: The Differential Impedimetric Sensor Cell (DISC)

Cornelis

Wackers

Thomas

et al. 2018

Physica Status Solidi (a)

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For medical diagnostics, food-safety analysis, and detection of environmental pollutants, simultaneous detection and quantification of multiple target molecules can be a great advantage. Impedimetric measurements using molecularly imprinted polymers (MIPs), antibodies or aptamers as biomimetic sensors are becoming a well-established technique for detecting, quantifying, and analyzing various biological targets such as DNA, proteins, and small molecules. The most commonly implemented systems use non-Faradaic impedance spectroscopy. Adding a redox probe such as silver/silver chloride allows for the use of Faradaic impedance spectroscopy techniques using redox-active molecules such as ferricyanide thereby extending the range of possible applications. Furthermore, the ability to perform differential measurements allows for the use of undiluted patient samples which significantly simplifies sample preparation. Therefore, adapting this low-cost technique to simultaneously perform differential measurements on multiple targets and making it easy to use has great potential in a wide range of applications. In this work, a system that meets these requirements is successfully designed and fabricated. Up to eight different targets can be quasi-simultaneously analyzed. Furthermore, the system is validated against a high-resolution dielectric spectrometer (Novocontrol, Alpha analyzer) using well-characterized samples at different temperatures over the whole frequency range (10 Hz-100 kHz).

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Direct observation of the f–c hybridization in the ordered uranium films on W(110)*

Cited by 11 publications

References 29 publications

Effect of strain on charge density wave order in α-U

Effect of strain on charge density wave order in α-U

Advances in actinide thin films: synthesis, properties, and future directions

A Novel Modular Device for Biological Impedance Measurements: The Differential Impedimetric Sensor Cell (DISC)

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