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Topological surface...
Topological surface state induced spin pumping in sputtered topological insulator (Bi2Te3)-ferromagnet (Co60Fe20B20) heterostructures
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- Pandey, Lalit (författare)
- Indian Inst Technol Delhi, Dept Phys, Thin Film Lab, New Delhi 110016, India.
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- Gupta, Rahul (författare)
- Uppsala universitet,Institutionen för materialvetenskap,Johannes Gutenberg Univ Mainz, Inst Phys, Staudingerweg 7, D-55128 Mainz, Germany.
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- Khan, Amir (författare)
- Indian Inst Technol Delhi, Dept Phys, Thin Film Lab, New Delhi 110016, India.
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- Gupta, Nanhe Kumar (författare)
- Indian Inst Technol Delhi, Dept Phys, Thin Film Lab, New Delhi 110016, India.
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- Hait, Soumyarup (författare)
- Indian Inst Technol Delhi, Dept Phys, Thin Film Lab, New Delhi 110016, India.;Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore.
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- Kumar, Nakul (författare)
- Indian Inst Technol Delhi, Dept Phys, Thin Film Lab, New Delhi 110016, India.
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- Mishra, Vireshwar (författare)
- Indian Inst Technol Delhi, Dept Phys, Thin Film Lab, New Delhi 110016, India.
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- Sharma, Nikita (författare)
- Indian Inst Technol Delhi, Dept Phys, Thin Film Lab, New Delhi 110016, India.
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- Svedlindh, Peter (författare)
- Uppsala universitet,Institutionen för materialvetenskap
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- Chaudhary, Sujeet (författare)
- Indian Inst Technol Delhi, Dept Phys, Thin Film Lab, New Delhi 110016, India.
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Indian Inst Technol Delhi, Dept Phys, Thin Film Lab, New Delhi 110016, India Institutionen för materialvetenskap (creator_code:org_t)
- AIP Publishing, 2023
- 2023
- Engelska.
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Ingår i: Journal of Applied Physics. - : AIP Publishing. - 0021-8979 .- 1089-7550. ; 134:4
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Topological insulators with high spin-orbit coupling and helically spin-momentum-locked topological surface states (TSSs) can serve as efficient spin current generators for modern spintronics applications. We used the industrial-friendly DC magnetron sputtering technique to fabricate magnetic heterostructures consisting of Bi2Te3 (BT) as a topological insulator and Co60Fe20B20 (CFB) as a magnetic layer and studied the temperature-dependent spin pumping, utilizing out-of-plane ferromagnetic resonance spectroscopy. These results demonstrate that the effective spin-mixing conductance is significantly affected by the contribution of two-magnon scattering (TMS). It is found that the TMS-free effective spin-mixing conductance increases with decreasing temperature. Additionally, results from magneto-transport measurements indicate that the surface coherence length of BT is in accordance with the temperature-dependent effective spin-mixing conductance. This enhancement of effective mixing conductance correlated with the enhancement in the contribution of the TSSs as evaluated using the weak-anti-localization effect. This study provides a deeper understanding of the temperature-dependent spin dynamics in sputtered BT/CFB heterostructures which can serve as a guide for further exploration of such bilayers for topological-based spintronic applications.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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Pandey, Lalit
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Gupta, Rahul
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Khan, Amir
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Gupta, Nanhe Kum ...
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Hait, Soumyarup
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Kumar, Nakul
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visa fler...
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Mishra, Vireshwa ...
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Sharma, Nikita
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Svedlindh, Peter
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Chaudhary, Sujee ...
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visa färre...
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Uppsala universitet