Forbidden transitions between singlet and triplet nuclear spin states in chemically equivalent spin-l /2 pair systems were observed in the "P cross-polarization magic-angle spinning (CPMAS) nuclear magnetic resonance (NMR) spectrum of 1,2-bis(2,4,6tri-tert-butylphenyl)diphosphene (TBPDP). The fine s
Comparison of Magnetic Properties between Spin Singlet and Triplet Li3Al4−Clusters
✍ Scribed by R. J. Zhang; X. Q. Wang; F. L. Cheng
- Publisher
- Springer
- Year
- 2007
- Tongue
- English
- Weight
- 316 KB
- Volume
- 18
- Category
- Article
- ISSN
- 1040-7278
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## Abstract The ensemble consists of __N__ clusters each containing two spin 1/2. The energy spectrum is derived from an exchange interaction __J__ between the two spins of one cluster, a Weiß‐molecular‐field __H__~m~ = γm (m averaged magnetization of the random ensemble), and a Zeeman‐term in an e
We used a time-resolved charge readout technique to study the spin-related transition and spin relaxation for a quantum dot near the regime of filling factor n ¼ 2. The measured tunneling time was seven times faster for a spin triplet than for a spin singlet. We used this difference to identify the