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2015 | 127 | 2 | 153-156
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The "Higgs" Amplitude Mode in Weak Ferromagnetic Metals

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Abstracts
EN
Using ferromagnetic Fermi liquid theory, Bedell and Blagoev derived the collective low-energy excitations of a weak ferromagnet. They obtained the well-known magnon (Nambu-Goldstone) mode and found a new gapped mode that was never studied in weak ferromagnetic metals. In this article we have identified this mode as the Higgs boson (amplitude mode) of a ferromagnetic metal. This is identified as the Higgs since it can be shown that it corresponds to a fluctuation of the amplitude of the order parameter. We use this model to describe the itinerant-electron ferromagnetic material MnSi. By fitting the model with the existing experimental results, we calculate the dynamical structure function and see well-defined peaks contributed from the magnon and the Higgs. Our estimates of the relative intensity of the Higgs amplitude mode suggest that it can be seen in neutron scattering experiments on MnSi.
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author
  • Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467, USA
author
  • Departamento de Física, Universidade Federal de São Carlos, 13565-905, São Carlos, SP, Brazil
author
  • Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467, USA
References
  • [1] S. Weinberg, The Quantum Theory of Fields, Vol. 2, Cambridge University Press, Cambridge 1991
  • [2] ATLAS Collaboration, Phys. Lett. B 716, 1C29 (2012), doi: 10.1016/j.physletb.2012.08.020
  • [3] CMS Collaboration, Phys. Lett. B 716, 30 (2012), doi: 10.1016/j.physletb.2012.08.021
  • [4] P.A. Lee, T.M. Rice, P.W. Anderson, Solid State Commun. 14, 703 (1974), doi: 10.1016/0038-1098(74)90868-0
  • [5] R. Sooryakumar, M.V. Klein, Phys. Rev. Lett. 45, 660 (1980), doi: 10.1103/PhysRevLett.45.660
  • [6] P.B. Littlewood, C.M. Varma, Phys. Rev. Lett. 47, 811 (1981), doi: 10.1103/PhysRevLett.47.811
  • [7] P.B. Littlewood, C.M. Varma, Phys. Rev. B 26, 4883 (1982), doi: 10.1103/PhysRevB.26.4883
  • [8] C.M. Varma, J. Low Temp. Phys. 126, 901 (2002), doi: 10.1023/A:1013890507658
  • [9] D. Podolsky, A. Auerbach, D.P. Arovas, Phys. Rev. B 84, 174522 (2011), doi: 10.1103/PhysRevB.84.174522
  • [10] E. Altman, A. Auerbach, Phys. Rev. Lett. 89, 250404 (2002), doi: 10.1103/PhysRevLett.89.250404
  • [11] L. Pollet, N. Prokof'ev, Phys. Rev. Lett. 109, 010401 (2012), doi: 10.1103/PhysRevLett.109.010401
  • [12] S.D. Huber, E. Altman, H.P. Büchler, G. Blatter, Phys. Rev. B 75, 085106 (2007), doi: 10.1103/PhysRevB.75.085106
  • [13] M. Endres, T. Fukuhara, D. Pekker, M. Cheneau, P. Schaub, C. Gross, E. Demler, S. Kuhr, I. Bloch, Nature 487, 454 (2012), doi: 10.1038/nature11255
  • [14] F. Bloch, Z. Phys. 61, 206 (1930), doi: 10.1007/BF01339661
  • [15] J.C. Slater, Phys. Rev. 35, 509 (1930), doi: 10.1103/PhysRev.35.509
  • [16] R.D. Lowde, Proc. R. Soc. A 235, 305 (1956), doi: 10.1098/rspa.1956.0084
  • [17] A.A. Abrikosov, I.E. Dzyaloshinskii, Sov. Phys. JETP 35, 535 (1959)
  • [18] I.E. Dzyaloshinskii, P.S. Kondratenko, Zh. Eksp. Teor. Fiz. 70, 1987 (1976)
  • [19] T. Moriya, A. Kawabata, J. Phys. Soc. Jpn. 34, 639 (1973)
  • [19a] T. Moriya, Physica (Utr.) 8 91, 235 (1977)
  • [20] K.S. Bedell, K.B. Blagoev, Philos. Mag. Lett. 81, 511 (2001), doi: 10.1080/09500830110044573
  • [21] G. Baym, C. Pethick, Landau Fermi-Liquid Theory, Wiley, New York 1991)
  • [22] K.B. Blagoev, J.R. Engelbrecht, K.S. Bedell, Phys. Rev. Lett. 82, 133 (1999), doi: 10.1103/PhysRevLett.82.133
  • [22a] K.B. Blagoev, J.R. Engelbrecht, K.S. Bedell, Philos. Mag. Lett. 78, 169 (1998), doi: 10.1080/095008398178165
  • [23] I.I. Pomeranchuk, Sov. Phys. JETP 8, 361 (1959)
  • [24] Yi Zhang, K.S. Bedell, Phys. Rev. B 87, 115134(2013), doi: 10.1103/PhysRevB.87.115134
  • [25] H.J. Williams, J.H. Wernick, R.C. Sherwood, G.K. Wertheim, J. Appl. Phys. 37, 1256 (1966), doi: 10.1063/1.1708422
  • [26] D. Shinoda, S. Asanabe, J. Phys. Soc. Jpn. 21, 555 (1966), doi: 10.1143/JPSJ.21.555
  • [27] J.H. Wernick, G.K. Wertheim, R.C. Sherwood, Mater. Res. Bull. 7, 1431 (1972), doi: 10.1016/0025-5408(72)90180-8
  • [28] L.M. Levinson, G.H. Lander, M.O. Steinitz, AIP Conf. Proc. 10, 1138 (1972), doi: 10.1063/1.2946755
  • [29] Y. Ishikawa, G. Shirane, J.A. Tarvin, M. Kohgi, Phys. Rev. B 16, 4956 (1977), doi: 10.1103/PhysRevB.16.4956
  • [30] E. Fawcett, J.P. Maita, J.H. Wernick, Int. J. Magn. 1, 29 (1970)
  • [31] S.M. Stishov, A.E. Petrova, S. Khasanov, G.Kh. Panova, A.A. Shikov, J.C. Lashley, D. Wu, T.A. Lograsso, J. Phys. Condens. Matter 20, 235222 (2008), doi: 10.1088/0953-8984/20/23/235222
  • [32] T. Jeong, W.E. Pickett, Phys. Rev. B 70, 075114 (2004), doi: 10.1103/PhysRevB.70.075114
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv127n2002kz
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