Published March 2006
| Version v1
Journal article
Drastic change of magnetic phase diagram in doped quantum antiferromagnet TlCu1-xMgxCl3
Creators
- 1. Tokyo Inst. of Technology, Dept. of Physics, Tokyo (Japan)
- 2. Tokyo Inst. of Technology, Research Center for Low Temperature Physics, Tokyo (Japan)
- 3. Hahn-Meitner-Institute, Berlin (Germany)
Description
TlCuCl3 is a coupled spin dimer system, which has a singlet ground state with an excitation gap of Δ/gμB=5.5T. TlCu1-xMgxCl3 doped with nonmagnetic Mg2+ ions undergoes impurity-induced magnetic ordering. Because triplet excitation with a finite gap still remains, this doped system can also undergo magnetic-field-induced magnetic ordering. Through specific heat measurements and neutron scattering experiments under a magnetic field, we investigated the phase diagram in TlCu1-xMgxCl3 with x∼0.01, and found that impurity- and field-induced ordered phases are the same. The gapped spin liquid state observed in pure TlCuCl3 is completely wiped out by the small amount of doping. (author)
Additional details
Publishing Information
- Journal Title
- Journal of the Physical Society of Japan
- Journal Volume
- 75
- Journal Issue
- 3
- Journal Page Range
- p. 033702.1-033702.4
- ISSN
- 0031-9015
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 37063997
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ANTIFERROMAGNETISM; BRAGG CURVE; CHLORIDES; COPPER IONS; DOPED MATERIALS; ELASTIC SCATTERING; MAGNESIUM IONS; MAGNETIC PROPERTIES; NEUTRON DIFFRACTION; PHASE DIAGRAMS; SPECIFIC HEAT; TEMPERATURE DEPENDENCE; THALLIUM IONS
- Descriptors DEC
- CHARGED PARTICLES; CHLORINE COMPOUNDS; COHERENT SCATTERING; DIAGRAMS; DIFFRACTION; HALIDES; HALOGEN COMPOUNDS; INFORMATION; IONS; MAGNETISM; MATERIALS; PHYSICAL PROPERTIES; SCATTERING; THERMODYNAMIC PROPERTIES
Optional Information
- Notes
- 20 refs., 5 figs.