Please use this identifier to cite or link to this item: https://has.hcu.ac.th/jspui/handle/123456789/2034
Title: Effect of substitution on the superconducting phase of transition metal dichalcogenide Nb(SexS1-x)2 van der Waals layered structure
Authors: Prutthipong Tsuppayakorn-aek
Prayoonsak Pluengphon
Piya Phansuke
Burapat Inceesungvorn
Wutthikrai Busayaporn
Pungtip Kaewtubtim
Thiti Bovornratanaraks
พฤทธิพงษ์ ทรัพยากรเอก
ประยูรศักดิ์ เปลื้องผล
ปิยะ ผ่านศึก
บูรภัทร์ อินทรีย์สังวร
วุฒิไกร บุษยาพร
พวงทิพย์ แก้วทับทิม
ธิติ บวรรัตนารักษ์
Chulalongkorn University. Faculty of Science
Huachiew Chalermprakiet University. Faculty of Science and Technology
Prince of Songkla University. Faculty of Science and Technology
Chiang Mai University. Faculty of Science
Synchrotron Light Research Institute (Public Organization)
Prince of Songkla University. Faculty of Science and Technology
Chulalongkorn University. Faculty of Science
Keywords: ตัวนำไฟฟ้ายิ่งยวด
Superconductors
โลหะทรานซิชันไดคาลโคจิไนด์
Transition metal dichalcogenide
แรงวัลเดอร์วาลส์
Van der Waals
Issue Date: 2021
Citation: Scientific Reports 11(1), (July 26, 2021) : 15215
Abstract: By means of first-principles cluster expansion, anisotropic superconductivity in the transition metal dichalcogenide Nb(SexS1-x)2 forming a van der Waals (vdW) layered structure is observed theoretically. We show that the Nb(Se0.5S0.5)2 vdW-layered structure exhibits minimum ground-state energy. The Pnnm structure is more thermodynamically stable when compared to the 2H–NbSe2 and 2H–NbS2 structures. The characteristics of its phonon dispersions confirm its dynamical stability. According to electronic properties, i.e., electronic band structure, density of states, and Fermi surface indicate metallicity of Nb(Se0.5S0.5)2. The corresponding superconductivity is then investigated through the Eliashberg spectral function, which gives rise to a superconducting transition temperature of 14.5 K. This proposes a remarkable improvement of superconductivity in this transition metal dichalcogenide.
Description: สามารถเข้าถึงบทความฉบับได้ที่ https://www.nature.com/articles/s41598-021-94000-2
URI: https://has.hcu.ac.th/jspui/handle/123456789/2034
Appears in Collections:Science and Technology - Artical Journals

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