Piezomagnetism of superconducting iron chalcogenides

2021 ◽  
Vol 104 (9) ◽  
Author(s):  
V. D. Fil ◽  
D. V. Fil ◽  
G. A. Zvyagina ◽  
K. R. Zhekov ◽  
I. V. Bilych ◽  
...  
Keyword(s):  
Iron Chalcogenides

scholarly journals Observation of universal strong orbital-dependent correlation effects in iron chalcogenides

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
M. Yi ◽  
Z-K Liu ◽  
Y. Zhang ◽  
R. Yu ◽  
J.-X. Zhu ◽  
...  
Keyword(s):  
Correlation Effects ◽  
Iron Chalcogenides ◽  
Dependent Correlation

The dependence of the critical temperature on pressure

2020 ◽  
Vol 34 (29) ◽  
pp. 2050276
Author(s):  
Thaipanya Chanpoom
Keyword(s):  
Experimental Data ◽  
Critical Temperature ◽  
Intermetallic Compounds ◽  
Analytic Form ◽  
Exact Equation ◽  
Effect Of Pressure ◽  
Iron Chalcogenides

The aim of this research is to study the critical temperature depending on the pressure of one-band superconductor. We derive the exact equation of the critical temperature [Formula: see text] by using the BCS-like model. The effect of pressure and pseudogap on critical temperature has been investigated. The analytic form and the approximation of the critical temperature are shown. First, we consider the effect of pressure on the critical temperature and find that the critical temperature increased as pressure is increased which fits well with the experimental data of Tl-based and Bi-based superconductors. Second, the effect of the pseudogap on the critical temperature is considered. We found that the critical temperature is decreased as pressure increased which agrees to the data of [Formula: see text], the iron chalcogenides [Formula: see text], intermetallic compounds [Formula: see text] and [Formula: see text] superconductors.

Mixed valent ternary iron chalcogenides: AFe2X3 (A = Rb, Cs; X = Se, Te)

1996 ◽  
Vol 238 (1-2) ◽  
pp. 1-5 ◽  
Author(s):  
K.O. Klepp ◽  
W. Sparlinek ◽  
H. Boller
Keyword(s):  
Iron Chalcogenides

ChemInform Abstract: Mixed Valent Ternary Iron Chalcogenides: MFe2X3 (M: Rb, Cs; X: Se, Te).

ChemInform ◽  
2010 ◽  
Vol 27 (43) ◽  
pp. no-no
Author(s):  
K. O. KLEPP ◽  
W. SPARLINEK ◽  
H. BOLLER
Keyword(s):  
Iron Chalcogenides

Fabrication and Physical Properties of Polycrystalline Iron-Chalcogenides Superconductors

2017 ◽  
Vol 27 (4) ◽  
pp. 1-5 ◽  
Author(s):  
Chiarasole Fiamozzi Zignani ◽  
Gianluca De Marzi ◽  
Gaia Grimaldi ◽  
Antonio Leo ◽  
Anita Guarino ◽  
...  
Keyword(s):  
Physical Properties ◽  
Polycrystalline Iron ◽  
Iron Chalcogenides

X-ray magnetic circular dichroism in iron chalcogenides Fe1−xS: First-principles calculations

2009 ◽  
Vol 106 (12) ◽  
pp. 123907 ◽  
Author(s):  
V. N. Antonov ◽  
L. V. Bekenov ◽  
A. P. Shpak ◽  
L. P. Germash ◽  
A. N. Yaresko ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
First Principles ◽  
Magnetic Circular Dichroism ◽  
First Principles Calculations ◽  
X Ray ◽  
Iron Chalcogenides ◽  
Circular Dichroïsm

Spin-polarized and spin-integrated photoemission study of itinerant ferrimagnetic iron chalcogenides

1996 ◽  
Vol 78 ◽  
pp. 317-320 ◽  
Author(s):  
K. Shimada ◽  
T. Mizokawa ◽  
T. Saitoh ◽  
K. Mamiya ◽  
A. Fujimori ◽  
...  
Keyword(s):  
Iron Chalcogenides ◽  
Spin Polarized ◽  
Photoemission Study

scholarly journals Intercalated Iron Chalcogenides: Phase Separation Phenomena and Superconducting Properties

2021 ◽  
Vol 9 ◽  
Author(s):  
Anna Krzton-Maziopa
Keyword(s):  
Alkali Metals ◽  
Organic Molecules ◽  
Chemical Nature ◽  
Building Blocks ◽  
Fine Tuning ◽  
Synthetic Approach ◽  
Superconducting Properties ◽  
Iron Chalcogenides ◽  
Organic Guests ◽  
Inorganic Layers

Organic molecule-intercalated layered iron-based monochalcogenides are presently the subject of intense research studies due to the linkage of their fascinating magnetic and superconducting properties to the chemical nature of guests present in the structure. Iron chalcogenides have the ability to host various organic species (i.e., solvates of alkali metals and the selected Lewis bases or long-chain alkylammonium cations) between the weakly bound inorganic layers, which opens up the possibility for fine tuning the magnetic and electrical properties of the intercalated phases by controlling both the doping level and the type/shape and orientation of the organic molecules. In recent years, significant progress has been made in the field of intercalation chemistry, expanding the gallery of intercalated superconductors with new hybrid inorganic–organic phases characterized by transition temperatures to a superconducting state as high as 46 K. A typical synthetic approach involves the low-temperature intercalation of layered precursors in the presence of liquid amines, and other methods, such as electrochemical intercalation, intercalant or ion exchange, and direct solvothermal growths from anhydrous amine-based media, are also being developed. Large organic guests, while entering a layered structure on intercalation, push off the inorganic slabs and modify the geometry of their internal building blocks (edge-sharing iron chalcogenide tetrahedrons) through chemical pressure. The chemical nature and orientation of organic molecules between the inorganic layers play an important role in structural modification and may serve as a tool for the alteration of the superconducting properties. A variety of donor species well-matched with the selected alkali metals enables the adjustment of electron doping in a host structure offering a broad range of new materials with tunable electric and magnetic properties. In this review, the main aspects of intercalation chemistry are discussed, involving the influence of the chemical and electrochemical nature of intercalating species on the crystal structure and critical issues related to the superconducting properties of the hybrid inorganic–organic phases. Mutual relations between the host and organic guests lead to a specific ordering of molecular species between the host layers, and their effect on the electronic structure of the host will be also argued. A brief description of a critical assessment of the association of the most effective chemical and electrochemical methods, which lead to the preparation of nanosized/microsized powders and single crystals of molecularly intercalated phases, with the ease of preparation of phase pure materials, crystal sizes, and the morphology of final products is given together with a discussion of the stability of the intercalated materials connected with the volatility of organic solvents and a possible degradation of host materials.

Tuning the Magnetic Properties of New Layered Iron Chalcogenides (BaF)2Fe2–xQ3 (Q = S, Se) by Changing the Defect Concentration on the Iron Sublattice

2015 ◽  
Vol 27 (9) ◽  
pp. 3280-3290 ◽  
Author(s):  
Mihai Sturza ◽  
Jared M. Allred ◽  
Christos D. Malliakas ◽  
Daniel E. Bugaris ◽  
Fei Han ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Defect Concentration ◽  
Iron Chalcogenides
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