2003/10/08 by Shinji Watanabe, Watanabe, Shinji, Susumu Sasaki +1
Physics and Astronomy · #Crystallography and Radiation Phenomena #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Quantum and electron transport phenomena #Semiconductor materials and interfaces #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.cond-mat/0310166
9 pages, 3 figures, to appear in Jpn. J. Appl. Phys
arxiv created 2003/10/08 · openalex publication_date 2003/10/08 · arxiv updated 2009/12/01 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28
We report on the 29Si nuclear spin decoherence time at room temperature for a pure (99.99999%, 7N) and carrier-less (p-type, doping level of 1015cm-3) silicon in which 29Si nuclei are naturally abundant (4.7%). Despite the experimental difficulties coming from the extremely long spin-lattice relaxation time T1 (of the order of 104 s), we have successfully observed a series of spin-echoes of which the time dependence is characterized by the decoherence time T2. We found that the decoherence process deviates from a single Gaussian or Lorentzian function but is well-reproduced by a bi-exponential function with the shorter T2S = 15±5 ms and the longer T2L = 200±20 ms.