2018/05/30 by Rabia Sultana, Sultana, Rabia, Ganesh Gurjar +7
Physics and Astronomy · #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Quantum, superfluid, helium dynamics #Strongly Correlated Electrons (cond-mat.str-el) #Superconductivity (cond-mat.supr-con) #Surface and Thin Film Phenomena #Topological Materials and Phenomena
paper · pdf · doi:10.48550/arxiv.1805.11822
openalex publication_date 2018/05/30 · openalex created_date 2022/10/02 · openalex updated_date 2026/07/28
We report the magneto-conductivity analysis at different temperatures under\nmagnetic field of up to 5Tesla of a well characterized Bi2Te3 crystal. Details\nof crystal growth and various physical properties including high linear magneto\nresistance are already reported by some of us. To elaborate upon the transport\nproperties of Bi2Te3 crystal, the magneto conductivity is fitted to the known\nHLN (Hikami Larkin Nagaoka) equation and it is found that the conduction\nmechanism is dominated by both surface driven WAL (weak anti localization) and\nthe bulk WL states. The value of HLN equation coefficient signifying the type\nof localization (WL, WAL or both WL and WAL) falls within the range of -0.5 to\n-1.5. In our case, the low field (0.25Tesla) fitting of studied crystal\nexhibited value close to -0.86 for studied temperatures of up to 50K,\nindicating both WAL and WL contributions. The phase coherence length is found\nto decrease from 98.266 to 40.314nm with increasing temperature. Summarily, the\nshort letter reports the fact that bulk Bi2Te3 follows the HLN equation and\nquantitative analysis of the same facilitates to know the quality of studied\ncrystal in terms of WAL to WL contributions and thus the surface to bulk\nconduction ratio.\n