Hyperfine spectroscopy of muonium in 4H and 6H silicon carbide

被引：24
|
作者：
Lichti, RL [1 ]
Nussbaum, WA
Chow, KH
机构：
[1] Texas Tech Univ, Dept Phys, Lubbock, TX 79409 USA
[2] Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada
来源：
PHYSICAL REVIEW B | 2004年 / 70卷 / 16期
基金：
美国国家科学基金会; 加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1103/PhysRevB.70.165204
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The hyperfine spectroscopy of neutral muonium impurity centers has been investigated for the two common hexagonal structures of SiC. Paramagnetic spin-precession frequencies obtained in a field of 6 T applied parallel to the c-axis identify two atomiclike Mu(0) centers in 4H-SiC and a total of 4 Mu(0) centers in 6H-SiC. Hyperfine constants fall between those for the "normal" isotropic Mu(0) centers in Si and diamond, and temperature dependences are well characterized by interaction with long-wavelength phonons having an effective Debye temperature near 800 K. When suitably scaled by the ratio of nuclear moments, these results should apply to the analogous hydrogen impurities.
引用
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页码：1 / 6
页数：6
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