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Anomalous Magnetic Excitations of Cooperative Tetrahedral Spin Clusters


Prša, Krunoslav; Ronnow, H. M.; Zaharko, O.; Christensen, N. B.; Jensen, J.; Chang, J.; Streule, S.; Jime´nez-Ruiz, M.; Berger, H.; Prester, Mladen; Mesot, J.
Anomalous Magnetic Excitations of Cooperative Tetrahedral Spin Clusters // Physical Review Letters, 102 (2009), 17; 177202-1 doi:10.1103/PhysRevLett.102.177202 (međunarodna recenzija, pismo, znanstveni)


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Naslov
Anomalous Magnetic Excitations of Cooperative Tetrahedral Spin Clusters

Autori
Prša, Krunoslav ; Ronnow, H. M. ; Zaharko, O. ; Christensen, N. B. ; Jensen, J. ; Chang, J. ; Streule, S. ; Jime´nez-Ruiz, M. ; Berger, H. ; Prester, Mladen ; Mesot, J.

Izvornik
Physical Review Letters (0031-9007) 102 (2009), 17; 177202-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, pismo, znanstveni

Ključne riječi
inelastic neutron scattering; magnetic order; spin excitations

Sažetak
An inelastic neutron scattering study of Cu2Te2O5X2 (X=Cl, Br) shows strong dispersive modes with large energy gaps persisting far above TN, notably in Cu2Te2O5Br2. The anomalous features: a coexisting unusually weak Goldstone-like mode observed in Cu2Te2O5Cl2 and the size of the energy gaps cannot be explained by existing theories, such as our mean-field or random-phase approximation. We argue that our findings represent a new general type of behavior due to intercluster quantum fluctuations and call for development of a new theoretical approach.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekti:
035-0352843-2845 - Kvantni magneti: Osnovna stanja u kompeticiji (Prester, Mladen, MZOS ) ( POIROT)

Ustanove:
Institut za fiziku, Zagreb

Profili:

Avatar Url Mladen Prester (autor)

Poveznice na cjeloviti tekst rada:

doi

Citiraj ovu publikaciju:

Prša, Krunoslav; Ronnow, H. M.; Zaharko, O.; Christensen, N. B.; Jensen, J.; Chang, J.; Streule, S.; Jime´nez-Ruiz, M.; Berger, H.; Prester, Mladen; Mesot, J.
Anomalous Magnetic Excitations of Cooperative Tetrahedral Spin Clusters // Physical Review Letters, 102 (2009), 17; 177202-1 doi:10.1103/PhysRevLett.102.177202 (međunarodna recenzija, pismo, znanstveni)
Prša, K., Ronnow, H., Zaharko, O., Christensen, N., Jensen, J., Chang, J., Streule, S., Jime´nez-Ruiz, M., Berger, H., Prester, M. & Mesot, J. (2009) Anomalous Magnetic Excitations of Cooperative Tetrahedral Spin Clusters. Physical Review Letters, 102 (17), 177202-1 doi:10.1103/PhysRevLett.102.177202.
@article{article, year = {2009}, pages = {177202-1-177202-4}, DOI = {10.1103/PhysRevLett.102.177202}, keywords = {inelastic neutron scattering, magnetic order, spin excitations}, journal = {Physical Review Letters}, doi = {10.1103/PhysRevLett.102.177202}, volume = {102}, number = {17}, issn = {0031-9007}, title = {Anomalous Magnetic Excitations of Cooperative Tetrahedral Spin Clusters}, keyword = {inelastic neutron scattering, magnetic order, spin excitations} }
@article{article, year = {2009}, pages = {177202-1-177202-4}, DOI = {10.1103/PhysRevLett.102.177202}, keywords = {inelastic neutron scattering, magnetic order, spin excitations}, journal = {Physical Review Letters}, doi = {10.1103/PhysRevLett.102.177202}, volume = {102}, number = {17}, issn = {0031-9007}, title = {Anomalous Magnetic Excitations of Cooperative Tetrahedral Spin Clusters}, keyword = {inelastic neutron scattering, magnetic order, spin excitations} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE


Citati:





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