Inelastic neutron scattering study of the spin-gap behavior in Cu 2Te2O5Br2

S. J. Crowe; S. Majumdar; M. R. Lees; D. Mc K. Paul; D. T. Adroja; S. J. Levett

doi:10.1016/j.physb.2005.01.351

Inelastic neutron scattering study of the spin-gap behavior in Cu ₂Te₂O₅Br₂

S. J. Crowe
, S. Majumdar
, M. R. Lees
, D. Mc K. Paul
, D. T. Adroja
, S. J. Levett

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

We present direct observational evidence of a quasi-spin-gapped phase in the spin-tetrahedral system Cu2Te2O5Br2 using inelastic neutron scattering. Our data show a magnetic peak centred at 4.20±0.05 meV, which falls in intensity with increasing temperature in consistence with a thermal depopulation of spin from a non-magnetic ground state to an excited state. However, the magnetic peak also shows a dispersive character, which is associated with the magnetic order in this system.

Original language	English
Pages (from-to)	1219-1221
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	359-361
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physb.2005.01.351
Publication status	Published - 30 Apr 2005
Externally published	Yes

Keywords

Inelastic neutron scattering
Quantum magnetism
Tetrahedral spin-clusters

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/j.physb.2005.01.351

Cite this

@article{3e8a898653ba4ec9aa28342ae6bf576e,

title = "Inelastic neutron scattering study of the spin-gap behavior in Cu 2Te2O5Br2",

abstract = "We present direct observational evidence of a quasi-spin-gapped phase in the spin-tetrahedral system Cu2Te2O5Br2 using inelastic neutron scattering. Our data show a magnetic peak centred at 4.20±0.05 meV, which falls in intensity with increasing temperature in consistence with a thermal depopulation of spin from a non-magnetic ground state to an excited state. However, the magnetic peak also shows a dispersive character, which is associated with the magnetic order in this system.",

keywords = "Inelastic neutron scattering, Quantum magnetism, Tetrahedral spin-clusters",

author = "Crowe, \{S. J.\} and S. Majumdar and Lees, \{M. R.\} and Paul, \{D. Mc K.\} and Adroja, \{D. T.\} and Levett, \{S. J.\}",

year = "2005",

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day = "30",

doi = "10.1016/j.physb.2005.01.351",

language = "English",

volume = "359-361",

pages = "1219--1221",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Inelastic neutron scattering study of the spin-gap behavior in Cu 2Te2O5Br2

AU - Crowe, S. J.

AU - Majumdar, S.

AU - Lees, M. R.

AU - Paul, D. Mc K.

AU - Adroja, D. T.

AU - Levett, S. J.

PY - 2005/4/30

Y1 - 2005/4/30

N2 - We present direct observational evidence of a quasi-spin-gapped phase in the spin-tetrahedral system Cu2Te2O5Br2 using inelastic neutron scattering. Our data show a magnetic peak centred at 4.20±0.05 meV, which falls in intensity with increasing temperature in consistence with a thermal depopulation of spin from a non-magnetic ground state to an excited state. However, the magnetic peak also shows a dispersive character, which is associated with the magnetic order in this system.

AB - We present direct observational evidence of a quasi-spin-gapped phase in the spin-tetrahedral system Cu2Te2O5Br2 using inelastic neutron scattering. Our data show a magnetic peak centred at 4.20±0.05 meV, which falls in intensity with increasing temperature in consistence with a thermal depopulation of spin from a non-magnetic ground state to an excited state. However, the magnetic peak also shows a dispersive character, which is associated with the magnetic order in this system.

KW - Inelastic neutron scattering

KW - Quantum magnetism

KW - Tetrahedral spin-clusters

UR - https://www.scopus.com/pages/publications/18144409752

U2 - 10.1016/j.physb.2005.01.351

DO - 10.1016/j.physb.2005.01.351

M3 - Article

AN - SCOPUS:18144409752

SN - 0921-4526

VL - 359-361

SP - 1219

EP - 1221

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - SPEC. ISS.

ER -