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Low-temperature thermodynamics of one-dimensional alternating-spin Heisenberg ferromagnets
| Title: | Low-temperature thermodynamics of one-dimensional alternating-spin Heisenberg ferromagnets |
| Authors: | Yamamoto, Shoji1 Browse this author →KAKEN DB | | Hori, Hiromitsu Browse this author |
| Authors(alt): | 山本, 昌司1 |
| Issue Date: | 2005 |
| Publisher: | American Physical Society |
| Journal Title: | PHYSICAL REVIEW B |
| Volume: | 72 |
| Start Page: | 054423 |
| Publisher DOI: | 10.1103/PhysRevB.72.054423 |
| Abstract: | Motivated by a novel bimetallic chain compound in which alternating magnetic centers are ferromagnetically coupled, we investigate thermodynamic properties of one-dimensional spin-(S, s) Heisenberg ferromagnets both numerically and analytically. On the one hand, quantum Monte Carlo calculations illuminate the overall thermal behavior. The specific heat may exhibit a double-peaked structure at intermediate temperatures for S3s in general. On the other hand, a modified spin-wave theory precisely describes the low-temperature properties. Expanding the specific heat and the magnetic susceptibility, we reveal an analogy and a contrast between mixed-spin ferromagnets and ferrimagnets. |
| Rights: | Copyright © 2005 American Physical Society |
| Relation: | http://www.aps.org/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/5862 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 山本 昌司
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