Ferromagnetic in-plane spin fluctuations in NaxCoO2 observed by neutron inelastic scattering

Physical Review Letters

Volumn 92, Issue 19, 2004, Pages

  Boothroyd, A T ^a   Coldea, R ^a   Tennant, D A ^b   Prabhakaran, D ^a   Helme, L M ^a   Frost, C D ^c  

^a UNIVERSITY OF OXFORD   (United Kingdom)

^b UNIVERSITY OF ST ANDREWS   (United Kingdom)

^c RUTHERFORD APPLETON LABORATORY   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

APPROXIMATION THEORY; CRYSTAL IMPURITIES; CRYSTAL ORIENTATION; DISPERSION (WAVES); ENERGY TRANSFER; FERROMAGNETISM; GROUND STATE; MAGNETIZATION; NEUTRON SCATTERING; PHONONS; SINGLE CRYSTALS; SODIUM COMPOUNDS; X RAY DIFFRACTION ANALYSIS;

FERROMAGNETIC INSTABILITY; FERROMAGNETIC SPIN FLUCTUATIONS; MAGNETIC CORRELATIONS; NEUTRON INELASTIC SCATTERING;

OXIDE SUPERCONDUCTORS;

EID: 18344415600     PISSN: 00319007     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevLett.92.197201     Document Type: Article

References (33)

1. I. Terasaki, Y. Sasago, and K. Uchinokura, Phys. Rev. B 56, R12685 (1997).
2. K. Takada et al., Nature (London) 422, 53 (2003).
3. Y.Wang et al., Nature (London) 423, 425 (2003).
4. R. E. Schaak et al., Nature (London) 424, 527 (2003).
5. T. Waki et al., cond-mat/0306036; T. Fujimoto et al., Phys. Rev. Lett. 92, 047004 (2004); K. Ishida et al., J. Phys. Soc. Jpn. 72, 3041 (2003); W. Higemoto et al., cond-mat/0310324; Y Kobayashi, M. Yokoi, and M. Sato, cond-mat/0305649.
6. T. Waki et al., cond-mat/0306036; T. Fujimoto et al., Phys. Rev. Lett. 92, 047004 (2004); K. Ishida et al., J. Phys. Soc. Jpn. 72, 3041 (2003); W. Higemoto et al., cond-mat/0310324; Y Kobayashi, M. Yokoi, and M. Sato, cond-mat/0305649.
7. T. Waki et al., cond-mat/0306036; T. Fujimoto et al., Phys. Rev. Lett. 92, 047004 (2004); K. Ishida et al., J. Phys. Soc. Jpn. 72, 3041 (2003); W. Higemoto et al., cond-mat/0310324; Y Kobayashi, M. Yokoi, and M. Sato, cond-mat/0305649.
8. T. Waki et al., cond-mat/0306036; T. Fujimoto et al., Phys. Rev. Lett. 92, 047004 (2004); K. Ishida et al., J. Phys. Soc. Jpn. 72, 3041 (2003); W. Higemoto et al., cond-mat/0310324; Y Kobayashi, M. Yokoi, and M. Sato, cond-mat/0305649.
9. T. Waki et al., cond-mat/0306036; T. Fujimoto et al., Phys. Rev. Lett. 92, 047004 (2004); K. Ishida et al., J. Phys. Soc. Jpn. 72, 3041 (2003); W. Higemoto et al., cond-mat/0310324; Y Kobayashi, M. Yokoi, and M. Sato, cond-mat/0305649.
10. G. Baskaran, Phys. Rev. Lett 91, 097003 (2003).
11. B. Kumar and B. S. Shastry, Phys. Rev. B 68, 104508 (2003).
12. M. Ogata, J. Phys. Soc. Jpn. 72, 1839 (2003).
13. C. Honerkamp, Phys. Rev. B 68, 104510 (2003).
14. Q.-H. Wang et al., Phys. Rev. B 69, 092504 (2004).
15. P.W. Anderson, Science 235, 1196 (1987).
16. H. Sakurai et al., Phys. Rev. B 68, 132507 (2003); T. Fujimoto et al., Phys. Rev. Lett 92, 047004 (2004).
17. H. Sakurai et al., Phys. Rev. B 68, 132507 (2003); T. Fujimoto et al., Phys. Rev. Lett 92, 047004 (2004).
18. R. Ray et al., Phys. Rev. B 59, 9454 (1999).
19. A. Tanaka and X. Hu, Phys. Rev. Lett 91, 257006 (2003).
20. H. Ikeda, Y. Nisikawa, and K. Yamada, J. Phys. Soc. Jpn. 73, 17 (2004).
21. Y. Tanaka, Y. Yanase, and M. Ogata, J. Phys. Soc. Jpn. 73, 319 (2004).
22. D.J. Singh, Phys. Rev. B 61, 13397 (2000).
23. D.J. Singh, Phys. Rev. B 68, 020503(R) (2003).
24. T. Motohashi et al., Phys. Rev. B 67, 064406 (2003).
25. D. Prabhakaran et al., cond-mat/0312493.
26. G. L. Squires, Introduction to the Theory of Thermal Neutron Scattering (Cambridge University Press, Cambridge, England, 1978).
27. The reciprocal lattice vectors are defined as a* = [(2π)/a](2/√3)x̂ and b* = [(2π/a)][(1/√3)x̂ + ŷ], where x̂ and ŷ are orthonormal vectors and a = 2.83 Å is the lattice parameter of the triangular lattice.
28. N.R. Bernhoeft et al., Phys. Rev. Lett 62, 657 (1989).
29. R. Doubble, Ph.D. thesis, University of Bristol, 1998.
30. S. Doniach, Proc. Phys. Soc. 91, 86 (1967).
31. Y Maeno et al., Nature (London) 372, 532 (1994); A. P. Mackenzie and Y. Maeno, Rev. Mod Phys. 75, 657 (2003).
32. Y Maeno et al., Nature (London) 372, 532 (1994); A. P. Mackenzie and Y. Maeno, Rev. Mod Phys. 75, 657 (2003).
33. Y. Sidis et al., Phys. Rev. Lett. 83, 3320 (1999).