G-C4N3-graphene-g-C4N3: A useful spin thermoelectric material

被引：7

作者：

Bhowmick, Rinki ^{[1
]}

Koley, Sayantanu ^{[2
]}

Chattopadhyaya, Mausumi ^{[3
]}

Sen, Sabyasachi ^{[1
]}

机构：

[1] JIS Coll Engn, Dept Phys, Block A,Phase 3, Kalyani 741235, W Bengal, India

[2] Univ Calcutta, Dept Chem, 92 Acharya Prafulla Chandra Rd, Kolkata 700009, India

[3] Natl Inst Technol, Dept Chem, Calicut Mukkam Rd, Kattangal 673601, Kerala, India

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2021年 / 156卷

关键词：

Spin seebeck effect; Graphitic carbon nitride; DFT; NEGF; Spin caloritronics; CARBON; ENHANCEMENT; EFFICIENCY; BULK;

D O I：

10.1016/j.jpcs.2021.110186

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Present investigation establishes simple 2D tunnelling nanostructure created by an assembly of ferromagnetic g-C4N3 electrodes separated by insulating graphene sheet; as a potential spincaloritronic device. The system shows large departure in up and down spin component of Seebeck coefficient and spin thermoelectric figure of merit is 10(3) times larger than charge part. Emergence of spin polarized Seebeck coefficient may be attributed to intrinsic ferromagnetism of g-C4N3 and spin-injection from ferromagnetic electrode to insulating graphene. This widely varying spin polarized Seebeck coefficient is attributed to large negative slope of logarithmic transmission coefficient of spin up channel compared to spin down counterpart.

引用

页数：6

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