書誌事項
- タイトル別名
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- キテイ 1ジュウコウ S 1 2 1ジゲン ハイゼンベルグ コウタイ サケイ CH3 2CHNH3CuX3 X Cl and Br ノ NMR
- NMR Studies on Singlet Ground-State of Alternating S=l/2 Heisenberg Linear- Chain (CH3)2CHNH3CuX3(X=Cl and Br)
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The model compound of alternating S=l/2 Heisenberg linear-chain (CH3)2CHNH3CuX3 is synthesized and studied by NMR spin-echo method to investigate the ground-state at low temperatures. The singlet ground-state is confirmed from H nuclear relaxation rate for two isomorphous antiferromagnetic compounds of S=l/2 afternating Heisenberg linear-chain, (CH3)2CHNH3CuCl3 and (CH3)2CHNH3CuBr3. The gap energy 17. 8±0.2 K derived for ferromagnetic-antiferromagnetic alternating chain (CH3)2CHNH3CuCl3 is consistent with that from the susceptibility measurements, while the gap energy 82.0±2.0 K obtained for antiferromagnetic alternating chain (CH3)2CHNH3CuBr3 is discussed taking into account 3-magnon process. Nuclear resonance signals of 63Cu and 65Cu in (CH3)2CHNH3CuCl3 have been detected between 1.5 K and 4.2 K, in view of non magnetic nature of the singlet ground-state.
収録刊行物
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- 奈良教育大学紀要. 自然科学
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奈良教育大学紀要. 自然科学 49 (2), 15-23, 2000-11-10
奈良教育大学
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詳細情報 詳細情報について
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- CRID
- 1050564289004992640
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- NII論文ID
- 110000296835
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- NII書誌ID
- AN00181070
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- ISSN
- 05472407
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- NDL書誌ID
- 5614123
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- 本文言語コード
- ja
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- 資料種別
- departmental bulletin paper
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- データソース種別
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- IRDB
- NDL
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