Bi2Te3 nanomaterials were grown by microwave synthesis technique. Resistivity of the material shows semiconducting like nature which has been interpreted by thermally activated behavior in the high temperature range, three dimensional variable range hopping (VRH) mechanism in the middle range and combined effect of both electron-electron interaction and weak antilocalization(WAL) in the lower temperature regime from 10K to 2K. Full cycle magnetoresistance (MR) at 2K of the material exhibits WAL effect that evolves smoothly in to a linear positive magneto resistance (LPMR) up to 10K, thereafter to a simple parabolic nature with respect to magnetic fields. These features unequivocally provide evidence for the so called topological surface states (TSS) in Bi2Te3 even in its nanocrystalline form.
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11 July 2019
DAE SOLID STATE PHYSICS SYMPOSIUM 2018
18–22 December 2018
Hisar, Haryana, India
Research Article|
July 11 2019
Possible evidence for topological surface states in nanocrystalline Bi2Te3
Sumit Bera;
Sumit Bera
a)
Low Temperature Laboratory, UGC-DAE Consortium for Scientific Research, University Campus
, Khandwa Road, Indore 452 001, M.P, India
a)Corresponding author: [email protected]
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P. Behera;
P. Behera
Low Temperature Laboratory, UGC-DAE Consortium for Scientific Research, University Campus
, Khandwa Road, Indore 452 001, M.P, India
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A. K. Mishra;
A. K. Mishra
Low Temperature Laboratory, UGC-DAE Consortium for Scientific Research, University Campus
, Khandwa Road, Indore 452 001, M.P, India
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M. Krishnan;
M. Krishnan
Low Temperature Laboratory, UGC-DAE Consortium for Scientific Research, University Campus
, Khandwa Road, Indore 452 001, M.P, India
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M. Gangrade;
M. Gangrade
Low Temperature Laboratory, UGC-DAE Consortium for Scientific Research, University Campus
, Khandwa Road, Indore 452 001, M.P, India
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U. P. Deshpande;
U. P. Deshpande
Low Temperature Laboratory, UGC-DAE Consortium for Scientific Research, University Campus
, Khandwa Road, Indore 452 001, M.P, India
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R. Venkatesh;
R. Venkatesh
Low Temperature Laboratory, UGC-DAE Consortium for Scientific Research, University Campus
, Khandwa Road, Indore 452 001, M.P, India
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V. Ganesan
V. Ganesan
Low Temperature Laboratory, UGC-DAE Consortium for Scientific Research, University Campus
, Khandwa Road, Indore 452 001, M.P, India
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Sumit Bera
a)
P. Behera
A. K. Mishra
M. Krishnan
M. Gangrade
U. P. Deshpande
R. Venkatesh
V. Ganesan
Low Temperature Laboratory, UGC-DAE Consortium for Scientific Research, University Campus
, Khandwa Road, Indore 452 001, M.P, India
a)Corresponding author: [email protected]
AIP Conf. Proc. 2115, 030144 (2019)
Citation
Sumit Bera, P. Behera, A. K. Mishra, M. Krishnan, M. Gangrade, U. P. Deshpande, R. Venkatesh, V. Ganesan; Possible evidence for topological surface states in nanocrystalline Bi2Te3. AIP Conf. Proc. 11 July 2019; 2115 (1): 030144. https://doi.org/10.1063/1.5112983
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