Drastic Change of Magnetic Phase Diagram in Doped Quantum Antiferromagnet TlCu1−xMgxCl3

• Fujisawa Masashi

  Department of Physics, Tokyo Institute of Technology

• Ono Toshio

  Department of Physics, Tokyo Institute of Technology

• Fujiwara Hideyasu

  Department of Physics, Tokyo Institute of Technology

• Tanaka Hidekazu

  Research Center for Low Temperature Physics, Tokyo Institute of Technology

• Sikolenko Vadim

  Hahn-Meitner-Institute

• Meissner Michael

  Hahn-Meitner-Institute

• Smeibidl Peter

  Hahn-Meitner-Institute

• Gerischer Sebastian

  Hahn-Meitner-Institute

• Graf Hans A.

  Hahn-Meitner-Institute

Bibliographic Information

Other Title

• Drastic Change of Magnetic Phase Diagram in Doped Quantum Antiferromagnet TlCu1-xMgxCl3
• Drastic Change of Magnetic Phase Diagram in Doped Quantum Antiferromagnet TlCu_1-<i>x</i>Mg_<i>x</i>Cl₃

Abstract

TlCuCl₃ is a coupled spin dimer system, which has a singlet ground state with an excitation gap of Δ⁄gμ_B=5.5 T. TlCu_1−xMg_xCl₃ 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 TlCu_1−xMg_xCl₃ 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.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 75 (3), 033702-, 2006

  THE PHYSICAL SOCIETY OF JAPAN

Keywords

• TlCuCl<SUB>3</SUB>
• TlCu<SUB>1−<I>x</I></SUB>Mg<I><SUB>x</SUB></I>Cl<SUB>3</SUB>
• specific heat
• neutron elastic scattering
• magnetic-field-induced magnetic ordering
• impurity-induced magnetic ordering
• coupled spin dimer
• spin gap

Details

• CRID: 1390001204189814400
• NII Article ID: 110004704663
• NII Article ID: 210000106025
• NII Book ID: AA00704814
• DOI: 10.1143/jpsj.75.033702
• BIBCODE: 2006JPSJ...75c3702F
• ISSN: 13474073
• ISSN: 00319015
• NDL BIB ID: 7852146
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7852146
• Web Site: https://journals.jps.jp/doi/pdf/10.1143/JPSJ.75.033702
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed