Specific heat study of an s = 1/2 alternating heisenberg chain system : F5PNN in a magnetic field
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We have measured the specific heat of an S = 1/2 antiferromagnetic alternating Heisenberg chain pentafulorophenyl nitronyl nitroxide in magnetic fields up to H > HC2. This compound has a field-induced magnetic ordered (FIMO) phase between HC1 and HC2. Characteristic behaviors are observed depending on the magnetic field up to above H C2 outside of the H-T boundary for the FIMO. The temperature and field dependence of the specific heat are qualitatively in good agreement with the theoretical calculation on an S = 1/2 two-leg ladder [Wang et al., Phys. Rev. Lett. 84, 5399 (2000)]. This agreement suggests that the observed behaviors are related with the low-energy excitation in the Tomonaga-Luttinger liquid.
収録刊行物
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- Physical Review Letters
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Physical Review Letters 94 (3), 037203-1-037203-4, 2005-01-28
American Physical Society
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詳細情報 詳細情報について
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- CRID
- 1050014791010666112
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- NII論文ID
- 120002440825
- 120000880107
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- NII書誌ID
- AA00773679
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- ISSN
- 10797114
- 00319007
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- HANDLE
- 10228/647
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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- IRDB
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