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Title: Silicon vacancy-related centers in non-irradiated 6H-SiC nanostructure

We present the first findings of the silicon vacancy related centers identified in the non-irradiated 6H-SiC nanostructure using the electron spin resonance (ESR) and electrically-detected (ED) ESR technique. This planar 6H-SiC nanostructure represents the ultra-narrow p-type quantum well confined by the δ-barriers heavily doped with boron on the surface of the n-type 6H-SiC(0001) wafer. The new EDESR technique by measuring the only magnetoresistance of the 6H-SiC nanostructure under the high frequency generation from the δ-barriers appears to allow the identification of the isolated silicon vacancy centers as well as the triplet center with spin state S = 1. The same triplet center that is characterized by the large value of the zero-field splitting constant D and anisotropic g-factor is revealed by the ESR (X-band) method. The hyperfine (HF) lines in the ESR and EDESR spectra originating from the HF interaction with the {sup 14}N nucleus seem to attribute this triplet center to the N-V{sub Si} defect.
Authors:
; ;  [1] ;  [2] ; ; ;  [1] ;  [3] ; ;  [2]
  1. Russian Academy of Sciences, Ioffe Physicaltechnical Institute (Russian Federation)
  2. National Academy of Sciences of Ukraine, Lashkaryov Institute of Semiconductor Physics (Ukraine)
  3. State Polytechnical University (Russian Federation)
Publication Date:
OSTI Identifier:
22469958
Resource Type:
Journal Article
Resource Relation:
Journal Name: Semiconductors; Journal Volume: 49; Journal Issue: 5; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; ANISOTROPY; BORON; DOPED MATERIALS; ELECTRON SPIN RESONANCE; HYPERFINE STRUCTURE; IRRADIATION; LANDE FACTOR; MAGNETORESISTANCE; NITROGEN 14; N-TYPE CONDUCTORS; P-TYPE CONDUCTORS; QUANTUM WELLS; SILICON; SILICON CARBIDES; SPIN; SURFACES; TRIPLETS; VACANCIES