Heat Capacities of Haldane-Gap Antiferromagnet NENP in Magnetic Field
-
- Kobayashi Tatsuo
- Department of Material Physics, Faculty of Engineering Science, Osaka University
-
- Tabuchi Yoshitaka
- Department of Material Physics, Faculty of Engineering Science, Osaka University
-
- Amaya Kiichi
- Department of Material Physics, Faculty of Engineering Science, Osaka University
-
- Ajiro Yoshitami
- Department of Applied Physics, Faculty of Engineering, Fukui University
-
- Yosida Taturu
- Low Temperature Center, Osaka University
-
- Date Muneyuki
- Department of Physics, Faculty of Science, Osaka University
Bibliographic Information
- Other Title
-
- Heat Capacities of Haldane Gap Antiferr
Search this article
Abstract
Heat capacity measurements of the quasi one-dimensional S=1 antiferromagnet Ni(C2H8N2)2NO2(ClO4) are performed in static magnetic fields up to 13 T. Applying a magnetic field, a broad anomaly appears below 5 K, which reflects the gap energy between the nonmagnetic ground state singlet and the excited states. The field-dependence of the energy gap estimated from the measured heat capacities gives the critical field values close to those obtained in high-field-magnetization measurements and non-zero gap remaining at the critical field. Within our experimental range of temperature and magnetic field, we have not observed any sharp peaks corresponding to the expected three dimensional magnetic long range ordering.
Journal
-
- Journal of the Physical Society of Japan
-
Journal of the Physical Society of Japan 61 (5), 1772-1776, 1992
THE PHYSICAL SOCIETY OF JAPAN
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390282679154574848
-
- NII Article ID
- 210000096713
- 110001969834
- 130003741239
-
- NII Book ID
- AA00704814
-
- BIBCODE
- 1992JPSJ...61.1772K
-
- COI
- 1:CAS:528:DyaK38XktF2jtrs%3D
-
- ISSN
- 13474073
- 00319015
-
- NDL BIB ID
- 3766665
-
- Text Lang
- en
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed