NMR and Susceptibility Studies of MnSi aboveTc
作者： Hiroshi Yasuoka , V. Jaccarino , R. C. Sherwood , J. H. Wernick
DOI: 10.1143/JPSJ.44.842
关键词: Physics 、 Temperature measurement 、 Temperature independent 、 Spin-½ 、 Relaxation (NMR) 、 Quadrupole 、 Knight shift 、 Condensed matter physics 、 Coupling 、 General Physics and Astronomy
摘要: The itinerant helimagnet MnSi has been studied using NMR and susceptibility techniques above T c . magnitude temperature dependence of the 55 Mn Knight shift K, quadrupole coupling ν Q nuclear spin-lattice spin-spin relaxation times 1 2 have determined along with new high measurements uniform χ(0). Both K are shown to be proportional χ(0), implicit parameter. independent well their magnitudes cannot explained by fluctuations localized moments. results all our in general accord predictions renormalized RPA theory spin fluctuation phenomena magnets Moriya his collaborators.
jps.jp
harvard.edu
ipap.jp参考文章(16)
D. Bloch, J. Voiron, V. Jaccarino, J.H. Wernick, The high field-high pressure magnetic properties of MnSi Physics Letters A. ,vol. 51, pp. 259- 261 ,(1975) , 10.1016/0375-9601(75)90438-7
Yoshinori Takahashi, Tôru Moriya, Effect of Spin Fluctuations on the Electric Field Gradient in Itinerant Electron Magnets Journal of the Physical Society of Japan. ,vol. 44, pp. 850- 858 ,(1978) , 10.1143/JPSJ.44.850
J. Korringa, Nuclear magnetic relaxation and resonnance line shift in metals Physica D: Nonlinear Phenomena. ,vol. 16, pp. 601- 610 ,(1950) , 10.1016/0031-8914(50)90105-4
Tôru Moriya, Kazuo Ueda, Nuclear magnetic relaxation in weakly ferro-and antiferromagnetic metals Solid State Communications. ,vol. 15, pp. 169- 172 ,(1974) , 10.1016/0038-1098(74)90733-9
K. Motoya, H. Yasuoka, Y. Nakamura, J.H. Wernick, Helical spin structure in MnSi-NMR studies Solid State Communications. ,vol. 19, pp. 529- 531 ,(1976) , 10.1016/0038-1098(76)90058-2
T. Moriya, Theory of helical spin structure in itinerant electron systems Solid State Communications. ,vol. 20, pp. 291- 294 ,(1976) , 10.1016/0038-1098(76)90198-8
R. E. Walstedt, Spin-Lattice Relaxation of Nuclear Spin Echoes in Metals Physical Review Letters. ,vol. 19, pp. 146- 149 ,(1967) , 10.1103/PHYSREVLETT.19.816.2
Y. Ishikawa, K. Tajima, D. Bloch, M. Roth, Helical spin structure in manganese silicide MnSi Solid State Communications. ,vol. 19, pp. 525- 528 ,(1976) , 10.1016/0038-1098(76)90057-0
R. Metselaar, P.K. Larsen, High-temperature electrical properties of yttrium iron garnet under varying oxygen pressures Solid State Communications. ,vol. 15, pp. 291- 294 ,(1974) , 10.1016/0038-1098(74)90760-1
W.B. Mims, G.E. Devlin, S. Geschwind, V. Jaccarino, New value for the 55Mn nuclear magnetic moment Physics Letters A. ,vol. 24, pp. 481- 482 ,(1967) , 10.1016/0375-9601(67)90153-3