scholarly journals Potassium Deposition During And After Hypokinesia In Potassium Supplemented And Unsupplemented Rats

2005 ◽  
pp. 107-113 ◽  
Author(s):  
Yan G. Zorbas ◽  
Kostas K. Kakuris ◽  
Kyrill P. Charapakhin ◽  
Andreas B. Afoninos
Keyword(s):  
Potassium Deposition

Enhanced surface binding energy regulates uniform potassium deposition for stable potassium metal anodes

2020 ◽  
Vol 8 (11) ◽  
pp. 5671-5678 ◽  
Author(s):  
Xinxin Zhao ◽  
Fengjiao Chen ◽  
Junqing Liu ◽  
Mingren Cheng ◽  
Hai Su ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Binding Energy ◽  
Surface Binding ◽  
Surface Binding Energy ◽  
Enhanced Surface ◽  
Coated Carbon ◽  
Potassium Deposition ◽  
Metal Anodes

A SnO2-coated carbon fiber mat is fabricated and used to guide uniform K nucleation/deposition for dendrite free K metal anodes.

In situ carrier tuning in high temperature superconductor Bi 2 Sr 2 CaCu 2 O 8+δ by potassium deposition

2016 ◽  
Vol 61 (13) ◽  
pp. 1037-1043 ◽  
Author(s):  
Yuxiao Zhang ◽  
Cheng Hu ◽  
Yong Hu ◽  
Lin Zhao ◽  
Ying Ding ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Superconductor ◽  
Potassium Deposition

Electronic And Structural Properties Of Interfaces Created By Potassium Deposition ON TiO2 (110) Surfaces

1991 ◽  
Vol 238 ◽  
Author(s):  
R. J. Lad ◽  
L. S. Dake
Keyword(s):  
Electronic States ◽  
Sharp Drop ◽  
Surface Band ◽  
Band Bending ◽  
Interface Composition ◽  
Oxygen Anions ◽  
Electronic And Structural Properties ◽  
Potassium Deposition ◽  
Metallic Potassium ◽  
Large Charge

ABSTRACTPotassium was deposited onto stoichiometric TiO2 (110) surfaces and the chemical bonding and structure were studied with UPS, XPS, LEED, and RHEED. Potassium interacts strongly with the oxygen anions of the TiO2 and reduces the valency of Ti cations at the interface. At submonolayer potassium coverages, a large charge transfer to the substrate causes a sharp drop in work function, a population of electronic states within the bulk TiO2 band gap, and surface band bending. After large potassium doses at 300 K, multilayers of K2O are formed by diffusion of oxygen anions from the substrate, creating a substoichiometric TiO2−x interface composition. No metallic potassium is present even after large doses. The K2O layers remain stable after annealing as high as 900 K, and LEED indicates that they are disordered. RHEED characterization is limited by the roughness of the stoichiometric TiO2 (110) surface.

scholarly journals Structure of Thin Films of [6] and [7]Phenacene and Impact of Potassium Deposition

2021 ◽  
pp. 2002193
Author(s):  
Matthias Zwadlo ◽  
Jakub Hagara ◽  
Giuliano Duva ◽  
Jan Hagenlocher ◽  
Alexander Gerlach ◽  
...  
Keyword(s):  
Thin Films ◽  
Potassium Deposition

scholarly journals Revealing the intrinsic superconducting gap anisotropy in surface-neutralized BaFe2(As0.7P0.3)2

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Ziming Xin ◽  
Yudi Wang ◽  
Cong Cai ◽  
Zhengguo Wang ◽  
Lei Chen ◽  
...  
Keyword(s):  
Alkaline Earth ◽  
Theoretical Models ◽  
Photoemission Spectroscopy ◽  
Superconducting Gap ◽  
Iron Based Superconductors ◽  
Future Studies ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Gap Anisotropy ◽  
Iron Based ◽  
Potassium Deposition

AbstractAlkaline-earth iron arsenide (122) is one of the most studied families of iron-based superconductors, especially for angle-resolved photoemission spectroscopy. While extensive photoemission results have been obtained, the surface complexity of 122 caused by its charge-non-neutral surface is rarely considered. Here, we show that the surface of 122 can be neutralized by potassium deposition. In potassium-coated BaFe2(As0.7P0.3)2, the surface-induced spectral broadening is strongly suppressed, and hence the coherent spectra that reflect the intrinsic bulk electronic state recover. This enables the measuring of superconducting gap with unpreceded precision. The result shows the existence of two pairing channels. While the gap anisotropy on the outer hole/electron pockets can be well fitted using an s± gap function, the gap anisotropy on the inner hole/electron shows a clear deviation. Our results provide quantitative constraints for refining theoretical models and also demonstrate an experimental method for revealing the intrinsic electronic properties of 122 in future studies.

scholarly journals Quantifying and Mapping Atmospheric Potassium Deposition for Soil Ecosystem Services Assessment in the United States

2019 ◽  
Vol 7 ◽  
Author(s):  
Elena A. Mikhailova ◽  
Gregory C. Post ◽  
Michael P. Cope ◽  
Christopher J. Post ◽  
Mark A. Schlautman ◽  
...  
Keyword(s):  
United States ◽  
Ecosystem Services ◽  
The United States ◽  
Soil Ecosystem ◽  
Soil Ecosystem Services ◽  
Potassium Deposition

scholarly journals Revealing the intrinsic superconducting gap anisotropy in surface-neutralized BaFe2(As0.7P0.3)2

2020 ◽  
Author(s):  
Ziming Xin ◽  
Yudi Wang ◽  
Cong Cai ◽  
Zhengguo Wang ◽  
Lei Chen ◽  
...  
Keyword(s):  
Alkaline Earth ◽  
Theoretical Models ◽  
Photoemission Spectroscopy ◽  
Cleavage Surface ◽  
Iron Based Superconductors ◽  
Future Studies ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Gap Measurement ◽  
Gap Anisotropy ◽  
Potassium Deposition

Abstract Alkaline-earth iron arsenide (122) is one of the most studied families of iron-based superconductors, especially for angle-resolved photoemission spectroscopy. Extensive results have been obtained including band structure, gap anisotropy, etc. However, the complicacy of 122 caused by its charge-non-neutral cleavage surface is rarely considered. Here, we show that the surface of 122 can be neutralized by potassium deposition. In potassium-coated BaFe2(As0.7P0.3)2, the surface-induced spectral broadening is strongly suppressed, while the coherent spectra that reflects the intrinsic bulk electronic state recovers. This raises the accuracy of the gap measurement and gap fitting to an unpreceded level. The results clearly distinguish two pairing channels originated respectively from the inner and outer Fermi pockets. While the gap anisotropy on the outer hole/electron pockets can be well fitted using an s± gap function, the gap magnitude on the inner hole/electron pockets show a clear deviation. Our results provide quantitative constraints for refining theoretical models and demonstrate an experimental method for revealing the intrinsic electronic properties of 122 in future studies.

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