Journal article

Direct measurement of the spin Hamiltonian and observation of condensation of magnons in the 2D frustrated quantum magnet Cs2CuCl4.

Abstract:: We propose a method for measuring spin Hamiltonians and apply it to the spin- 1/2 Heisenberg antiferromagnet Cs2CuCl4, which shows a 2D fractionalized resonating valence bond state at low fields. By applying strong fields we fully align the spin moment of Cs2CuCl4, transforming it into an effective ferromagnet. In this phase the excitations are conventional magnons and their dispersion relation measured using neutron scattering give the exchange couplings directly, which are found to form an anisotropic triangular lattice with small Dzyaloshinskii-Moriya terms. Using the field to control the excitations we observe Bose condensation of magnons into an ordered ground state.

Publication status:: Published

Actions

Email

Email this record

Send the bibliographic details of this record to your email address.

Your Email
Please enter the email address that the record information will be sent to.

-
Your message (optional)
Please add any additional information to be included within the email.
Share
Cite

Cite this record

APA Style

Coldea, R., Tennant, D., Habicht, K., Smeibidl, P., Wolters, C., & Tylczynski, Z. (2002). Direct measurement of the spin Hamiltonian and observation of condensation of magnons in the 2D frustrated quantum magnet Cs2CuCl4. Physical Review Letters, 88(13), 137203.

MLA Style

Coldea, R, et al. “Direct Measurement of the Spin Hamiltonian and Observation of Condensation of Magnons in the 2D Frustrated Quantum Magnet Cs2CuCl4.” Physical Review Letters, vol. 88, no. 13, 2002, p. 137203.

Chicago Style

Coldea, R, D Tennant, K Habicht, P Smeibidl, C Wolters, and Z Tylczynski. 2002. “Direct Measurement of the Spin Hamiltonian and Observation of Condensation of Magnons in the 2D Frustrated Quantum Magnet Cs2CuCl4.” Physical Review Letters 88 (13): 137203.
Print

Access Document

Publisher copy:: 10.1103/physrevlett.88.137203

Authors

+ Coldea, R More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Condensed Matter Physics
Role:: Author

+ Tennant, D More by this author

Role:: Author

+ Habicht, K More by this author

Role:: Author

+ Smeibidl, P More by this author

Role:: Author

+ Wolters, C More by this author

Role:: Author

More authors...

Journal:: Physical Review Letters More from this journal
Volume:: 88
Issue:: 13
Pages:: 137203
Publication date:: 2002-04-01
DOI:: 10.1103/physrevlett.88.137203
EISSN:: 1079-7114
ISSN:: 0031-9007

Language:: English
Keywords:: cond-mat.stat-mech

cond-mat.str-el
Pubs id:: pubs:155016
UUID:: uuid:172ba97b-ab22-4199-9b03-58351dac4fef
Local pid:: pubs:155016
Source identifiers:: 155016
Deposit date:: 2012-12-19
ARK identifier:: ark:/29072/ora_172ba97bab2241999b0358351dac4fef

Terms of use

Copyright date:: 2002
Notes:: 6 pages revtex4 including 3 eps figures

Licence:: Terms and Conditions of Use for Oxford University Research Archive

Views and Downloads

About views and downloads

If you are the owner of this record, you can report an update to it here: Report update to this record

TO TOP