Spin excitations used to probe the nature of exchange coupling in the magnetically ordered ground state of
Abstract
We have used time-of-flight inelastic neutron scattering to measure the spin wave spectrum of the canonical half-doped manganite Pr0.5Ca0.5MnO3 in its magnetic and orbitally ordered phase. Comparison of the data, which cover multiple Brillouin zones and the entire energy range of the excitations, with several different models shows that only the CE-type ordered state provides an adequate description of the magnetic ground state, provided interactions beyond nearest neighbor are included. We are able to rule out a ground state in which there exist pairs of dimerized spins which interact only with their nearest neighbors. The Zener polaron ground state, which comprises strongly bound magnetic dimers, can be ruled out on the basis of gross features of the observed spin wave spectrum. A model with weaker dimerization reproduces the observed dispersion but can be ruled out on the basis of subtle discrepancies between the calculated and observed structure factors at certain positions in reciprocal space. Adding further neighbor interactions results in almost no dimerization, i.e. interpolating back to the CE model. These results are consistent with theoretical analysis of the degenerate double exchange model for half-doping.
- Authors:
-
- Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Rutherford Appleton Lab., ISIS Neutron Source
- Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Rutherford Appleton Lab., ISIS Neutron Source; London Centre for Nanotechnology, London (United Kingdom)
- Univ. of Bristol, Bristol (United Kingdom). H. H. Wills Physics Lab.
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
- National Inst. of Advanced Industrial Science and Technology (AIST), Tsukuba (Japan). Electronics and Photonics Research Inst.
- Univ. of Tokyo (Japan). Dept. of Applied Physics
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); Engineering and Physical Sciences Research Council (EPSRC); Polish National Science Center (NCN)
- OSTI Identifier:
- 1295094
- Alternate Identifier(s):
- OSTI ID: 1260441
- Grant/Contract Number:
- AC05-00OR22725; 2012/04/A/ST3/00331; EP/G0314060/1
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 94; Journal Issue: 1; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Ewings, R. A., Perring, T. G., Sikora, O., Abernathy, D. L., Tomioka, Y., and Tokura, Y.. Spin excitations used to probe the nature of exchange coupling in the magnetically ordered ground state of Pr0.5Ca0.5MnO3. United States: N. p., 2016.
Web. doi:10.1103/PhysRevB.94.014405.
Ewings, R. A., Perring, T. G., Sikora, O., Abernathy, D. L., Tomioka, Y., & Tokura, Y.. Spin excitations used to probe the nature of exchange coupling in the magnetically ordered ground state of Pr0.5Ca0.5MnO3. United States. https://doi.org/10.1103/PhysRevB.94.014405
Ewings, R. A., Perring, T. G., Sikora, O., Abernathy, D. L., Tomioka, Y., and Tokura, Y.. Wed .
"Spin excitations used to probe the nature of exchange coupling in the magnetically ordered ground state of Pr0.5Ca0.5MnO3". United States. https://doi.org/10.1103/PhysRevB.94.014405. https://www.osti.gov/servlets/purl/1295094.
@article{osti_1295094,
title = {Spin excitations used to probe the nature of exchange coupling in the magnetically ordered ground state of Pr0.5Ca0.5MnO3},
author = {Ewings, R. A. and Perring, T. G. and Sikora, O. and Abernathy, D. L. and Tomioka, Y. and Tokura, Y.},
abstractNote = {We have used time-of-flight inelastic neutron scattering to measure the spin wave spectrum of the canonical half-doped manganite Pr0.5Ca0.5MnO3 in its magnetic and orbitally ordered phase. Comparison of the data, which cover multiple Brillouin zones and the entire energy range of the excitations, with several different models shows that only the CE-type ordered state provides an adequate description of the magnetic ground state, provided interactions beyond nearest neighbor are included. We are able to rule out a ground state in which there exist pairs of dimerized spins which interact only with their nearest neighbors. The Zener polaron ground state, which comprises strongly bound magnetic dimers, can be ruled out on the basis of gross features of the observed spin wave spectrum. A model with weaker dimerization reproduces the observed dispersion but can be ruled out on the basis of subtle discrepancies between the calculated and observed structure factors at certain positions in reciprocal space. Adding further neighbor interactions results in almost no dimerization, i.e. interpolating back to the CE model. These results are consistent with theoretical analysis of the degenerate double exchange model for half-doping.},
doi = {10.1103/PhysRevB.94.014405},
journal = {Physical Review B},
number = 1,
volume = 94,
place = {United States},
year = {Wed Jul 06 00:00:00 EDT 2016},
month = {Wed Jul 06 00:00:00 EDT 2016}
}
Web of Science
Works referenced in this record:
Magnons in the half-doped manganites
journal, July 2003
- Ventura, C. I.; Alascio, B.
- Physical Review B, Vol. 68, Issue 2
Bond- versus site-centred ordering and possible ferroelectricity in manganites
journal, November 2004
- Efremov, Dmitry V.; van den Brink, Jeroen; Khomskii, Daniel I.
- Nature Materials, Vol. 3, Issue 12
Resonant x-ray diffraction of the magnetoresistant perovskite
journal, April 2004
- Grenier, S.; Hill, J. P.; Gibbs, Doon
- Physical Review B, Vol. 69, Issue 13
Electronic ferroelectricity induced by charge and orbital orderings
journal, February 2014
- Yamauchi, Kunihiko; Barone, Paolo
- Journal of Physics: Condensed Matter, Vol. 26, Issue 10
Experimental confirmation of Zener-polaron-type charge and orbital ordering in
journal, November 2007
- Wu, L.; Klie, R. F.; Zhu, Y.
- Physical Review B, Vol. 76, Issue 17
Spin waves and magnetic exchange interactions in CaFe2As2
journal, July 2009
- Zhao, Jun; Adroja, D. T.; Yao, Dao-Xin
- Nature Physics, Vol. 5, Issue 8
Polaron melting and ordering as key mechanisms for colossal resistance effects in manganites
journal, August 2007
- Jooss, Ch.; Wu, L.; Beetz, T.
- Proceedings of the National Academy of Sciences, Vol. 104, Issue 34
Charge and Magnetic Order in L S Mn
journal, March 1996
- Sternlieb, B. J.; Hill, J. P.; Wildgruber, U. C.
- Physical Review Letters, Vol. 76, Issue 12
Anisotropic spin waves and exchange interactions in the -type antiferromagnetic state of
journal, February 2006
- Krishnamurthy, V. V.; Robertson, J. L.; Fishman, R. S.
- Physical Review B, Vol. 73, Issue 6
Spin-Wave Dispersion in Orbitally Ordered
journal, June 2006
- Senff, D.; Krüger, F.; Scheidl, S.
- Physical Review Letters, Vol. 96, Issue 25
Theory of anomalous magnon softening in ferromagnetic manganites
journal, February 2000
- Khaliullin, G.; Kilian, R.
- Physical Review B, Vol. 61, Issue 5
Interpreting magnetic X-ray scattering on Gd-compounds using the McPhase simulation program
journal, March 2004
- Rotter, M.; Schneidewind, A.; Doerr, M.
- Physica B: Condensed Matter, Vol. 345, Issue 1-4
Lattice effects in magnetoresistive manganese perovskites
journal, March 1998
- Millis, A. J.
- Nature, Vol. 392, Issue 6672
Evolution of Spin-Wave Excitations in Ferromagnetic Metallic Manganites
journal, January 2006
- Ye, F.; Dai, Pengcheng; Fernandez-Baca, J. A.
- Physical Review Letters, Vol. 96, Issue 4
Ordered Phases and Magnetic Excitations in Doped Manganites
journal, November 2004
- Sikora, O.; Oleś, A. M.
- Acta Physica Polonica A, Vol. 106, Issue 5
Magnons in ferromagnetic metallic manganites
journal, July 2007
- Zhang, Jiandi; Ye, F.; Sha, Hao
- Journal of Physics: Condensed Matter, Vol. 19, Issue 31
Charge ordering in half-doped manganites
journal, October 2004
- Goff, R. J.; Attfield, J. P.
- Physical Review B, Vol. 70, Issue 14
Doping dependence of the exchange energies in bilayer manganites: Role of orbital degrees of freedom
journal, May 2002
- Jackeli, G.; Perkins, N. B.
- Physical Review B, Vol. 65, Issue 21
Spin-wave expansion, finite temperature corrections, and order from disorder effects in the double exchange model
journal, February 2002
- Shannon, Nic; Chubukov, Andrey V.
- Physical Review B, Vol. 65, Issue 10
Spin Waves in the Magnetically Ordered Iron Chalcogenide
journal, February 2011
- Lipscombe, O. J.; Chen, G. F.; Fang, Chen
- Physical Review Letters, Vol. 106, Issue 5
Analysis of the x-ray resonant scattering at the Mn K edge in half-doped mixed valence manganites
journal, March 2001
- García, Joaquín; Sánchez, M. Concepción; Blasco, Javier
- Journal of Physics: Condensed Matter, Vol. 13, Issue 14
Superexchange interaction and symmetry properties of electron orbitals
journal, July 1959
- Kanamori, Junjiro
- Journal of Physics and Chemistry of Solids, Vol. 10, Issue 2-3
Spin dynamical properties and orbital states of the layered perovskite
journal, January 2002
- Hirota, K.; Ishihara, S.; Fujioka, H.
- Physical Review B, Vol. 65, Issue 6
Multiferroicity and orbital ordering in from first principles
journal, October 2010
- Colizzi, Giuseppe; Filippetti, Alessio; Fiorentini, Vincenzo
- Physical Review B, Vol. 82, Issue 14
Charge and Orbital Order in Half-Doped Manganites
journal, December 1999
- van den Brink, Jeroen; Khaliullin, Giniyat; Khomskii, Daniel
- Physical Review Letters, Vol. 83, Issue 24
Critical features of colossal magnetoresistive manganites
journal, February 2006
- Tokura, Y.
- Reports on Progress in Physics, Vol. 69, Issue 3
Softening and Broadening of the Zone Boundary Magnons in
journal, February 1998
- Hwang, H. Y.; Dai, P.; Cheong, S-W.
- Physical Review Letters, Vol. 80, Issue 6
Magnetic-field-induced metal-insulator phenomena in with controlled charge-ordering instability
journal, January 1996
- Tomioka, Y.; Asamitsu, A.; Kuwahara, H.
- Physical Review B, Vol. 53, Issue 4
Magnetism and charge ordering in
journal, January 2000
- Jirák, Z.; Damay, F.; Hervieu, M.
- Physical Review B, Vol. 61, Issue 2
Phase Separation Scenario for Manganese Oxides and Related Materials
journal, March 1999
- Moreo, A.
- Science, Vol. 283, Issue 5410
Orbital ordering and unfrustrated magnetism from degenerate double exchange in the iron pnictides
journal, July 2010
- Lv, Weicheng; Krüger, Frank; Phillips, Philip
- Physical Review B, Vol. 82, Issue 4
Magnetic control of ferroelectric polarization
journal, November 2003
- Kimura, T.; Goto, T.; Shintani, H.
- Nature, Vol. 426, Issue 6962
Charge, orbital, and magnetic ordering in s
journal, February 1997
- Radaelli, P. G.; Cox, D. E.; Marezio, M.
- Physical Review B, Vol. 55, Issue 5
Complexity in Strongly Correlated Electronic Systems
journal, July 2005
- Dagotto, E.
- Science, Vol. 309, Issue 5732
Structural origin of dipole x-ray resonant scattering in the low-temperature phase of
journal, July 2004
- Herrero-Martín, Javier; García, Joaquín; Subías, Gloria
- Physical Review B, Vol. 70, Issue 2
Magnetically Induced Electronic Ferroelectricity in Half-Doped Manganites
journal, July 2009
- Giovannetti, Gianluca; Kumar, Sanjeev; van den Brink, Jeroen
- Physical Review Letters, Vol. 103, Issue 3
Quantum spin dynamics of the bilayer ferromagnet La $ \mathsf {_{1.2}}$ Sr $ \mathsf {_{1.8}}$ Mn $ \mathsf {_2}$ O $ \mathsf {_7}$
journal, June 2002
- Shannon, N.; Chatterji, T.; Ouchni, F.
- The European Physical Journal B - Condensed Matter, Vol. 27, Issue 3
Spin-wave excitations in the ferromagnetic metallic and in the charge-, orbital-, and spin-ordered states in Nd Sr MnO with
journal, September 2011
- Ulbrich, H.; Krüger, F.; Nugroho, A. A.
- Physical Review B, Vol. 84, Issue 9
Spectacular Doping Dependence of Interlayer Exchange and Other Results on Spin Waves in Bilayer Manganites
journal, October 2001
- Perring, T. G.; Adroja, D. T.; Chaboussant, G.
- Physical Review Letters, Vol. 87, Issue 21
Design and operation of the wide angular-range chopper spectrometer ARCS at the Spallation Neutron Source
journal, January 2012
- Abernathy, D. L.; Stone, M. B.; Loguillo, M. J.
- Review of Scientific Instruments, Vol. 83, Issue 1
Zener Polaron Ordering in Half-Doped Manganites
journal, August 2002
- Daoud-Aladine, A.; Rodríguez-Carvajal, J.; Pinsard-Gaudart, L.
- Physical Review Letters, Vol. 89, Issue 9
Mechanism of Ferroelectricity in Half-Doped Manganites with Pseudocubic and Bilayer Structure
journal, November 2013
- Yamauchi, Kunihiko; Picozzi, Silvia
- Journal of the Physical Society of Japan, Vol. 82, Issue 11
Oxygen Stripes in from Ab Initio Calculations
journal, November 2003
- Ferrari, V.; Towler, M.; Littlewood, P. B.
- Physical Review Letters, Vol. 91, Issue 22
New Phase Transition in the System: Evidence for Electrical Polarization in Charge Ordered Manganites
journal, April 2008
- Lopes, A. M. L.; Araújo, J. P.; Amaral, V. S.
- Physical Review Letters, Vol. 100, Issue 15
Structural and magnetic properties of the single-layer manganese oxide
journal, January 2005
- Larochelle, S.; Mehta, A.; Lu, L.
- Physical Review B, Vol. 71, Issue 2
Buckling-induced Zener polaron instability in half-doped manganites
journal, June 2011
- Barone, Paolo; Picozzi, Silvia; van den Brink, Jeroen
- Physical Review B, Vol. 83, Issue 23
Competing crystal structures in : Conventional charge order versus Zener polarons
journal, August 2005
- Patterson, C. H.
- Physical Review B, Vol. 72, Issue 8
Ground State in a Half-Doped Manganite Distinguished by Neutron Spectroscopy
journal, December 2012
- Johnstone, G. E.; Perring, T. G.; Sikora, O.
- Physical Review Letters, Vol. 109, Issue 23
Advances in the Physics of High-Temperature Superconductivity
journal, April 2000
- Orenstein, J.
- Science, Vol. 288, Issue 5465
Microstructure related to charge and orbital ordering in
journal, June 1999
- Mori, S.; Katsufuji, T.; Yamamoto, N.
- Physical Review B, Vol. 59, Issue 21
Zener versus de Gennes ferromagnetism in
journal, August 2000
- Zhou, J. -S.; Goodenough, J. B.
- Physical Review B, Vol. 62, Issue 6
Ferromagnetic polarons in and
journal, June 2003
- Zheng, G.; Patterson, C. H.
- Physical Review B, Vol. 67, Issue 22
Direct experimental evidence of multiferroicity in a nanocrystalline Zener polaron ordered manganite
journal, December 2014
- Shukla, Vinay Kumar; Mukhopadhyay, Soumik; Das, Kalipada
- Physical Review B, Vol. 90, Issue 24
Orbital Physics in Transition-Metal Oxides
journal, April 2000
- Tokura, Y.
- Science, Vol. 288, Issue 5465
Theory of the Role of Covalence in the Perovskite-Type Manganites
journal, October 1955
- Goodenough, John B.
- Physical Review, Vol. 100, Issue 2