التفاصيل البيبلوغرافية
| العنوان: |
Magnetic Coulomb Phase in the Spin Ice Ho2Ti2O7. |
| المؤلفون: |
Fennell, T.1 fennell@ill.fr, Deen, P. P.1, Wildes, A. R.1, Schmalzl, K.2, Prabhakaran, D.3, Boothroyd, A. T.3, Aldus, R. J.4, McMorrow, D. F.4, Bramwell, S. T.4 |
| المصدر: |
Science. 10/16/2009, Vol. 326 Issue 5951, p415-417. 3p. |
| مصطلحات موضوعية: |
*MAGNETIC monopoles, *MAGNETIC fields, *TITANATES, *COULOMB functions, *GAUSSIAN processes, *NEUTRON scattering, *EQUIPMENT & supplies |
| مستخلص: |
Spin-ice materials are magnetic substances in which the spin directions map onto hydrogen positions in water ice. Their low-temperature magnetic state has been predicted to be a phase that obeys a Gauss' law and supports magnetic monopole excitations: in short, a Coulomb phase. We used polarized neutron scattering to show that the spin-ice material Ho2Ti2O7 exhibits an almost perfect Coulomb phase. Our result proves the existence of such phases in magnetic materials and strongly supports the magnetic monopole theory of spin ice. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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