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Solitonic lattice and Yukawa forces in the rare-earth orthoferrite TbFeO3

Artyukhin, Sergey; Mostovoy, Maxim; Jensen, Niels Paduraru; Le, Duc; Prokes, Karel; de Paula, Vincius G.; Bordallo, Heloisa N.; Maljuk, Andrey; Landsgesell, Sven and Ryll, Hanjo, et al. (2012) In Nature Materials 11(8). p.694-699
Abstract
The random fluctuations of spins give rise to many interesting physical phenomena, such as the 'order-from-disorder' arising in frustrated magnets and unconventional Cooper pairing in magnetic superconductors. Here we show that the exchange of spin waves between extended topological defects, such as domain walls, can result in novel magnetic states. We report the discovery of an unusual incommensurate phase in the orthoferrite TbFeO3 using neutron diffraction under an applied magnetic field. The magnetic modulation has a very long period of 340 angstrom at 3 K and exhibits an anomalously large number of higher-order harmonics. These domain walls are formed by Ising-like Tb spins. They interact by exchanging magnons propagating through the... (More)
The random fluctuations of spins give rise to many interesting physical phenomena, such as the 'order-from-disorder' arising in frustrated magnets and unconventional Cooper pairing in magnetic superconductors. Here we show that the exchange of spin waves between extended topological defects, such as domain walls, can result in novel magnetic states. We report the discovery of an unusual incommensurate phase in the orthoferrite TbFeO3 using neutron diffraction under an applied magnetic field. The magnetic modulation has a very long period of 340 angstrom at 3 K and exhibits an anomalously large number of higher-order harmonics. These domain walls are formed by Ising-like Tb spins. They interact by exchanging magnons propagating through the Fe magnetic sublattice. The resulting force between the domain walls has a rather long range that determines the period of the incommensurate state and is analogous to the pion-mediated Yukawa interaction between protons and neutrons in nuclei. (Less)
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publication status
published
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Nature Materials
volume
11
issue
8
pages
694 - 699
publisher
Nature Publishing Group
external identifiers
  • wos:000306693600018
  • scopus:84864365177
ISSN
1476-4660
DOI
10.1038/NMAT3358
language
English
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yes
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b09ab152-830b-4765-9e97-a1f76d67861b (old id 3079931)
date added to LUP
2012-09-25 08:53:45
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2017-06-18 03:13:59
@article{b09ab152-830b-4765-9e97-a1f76d67861b,
  abstract     = {The random fluctuations of spins give rise to many interesting physical phenomena, such as the 'order-from-disorder' arising in frustrated magnets and unconventional Cooper pairing in magnetic superconductors. Here we show that the exchange of spin waves between extended topological defects, such as domain walls, can result in novel magnetic states. We report the discovery of an unusual incommensurate phase in the orthoferrite TbFeO3 using neutron diffraction under an applied magnetic field. The magnetic modulation has a very long period of 340 angstrom at 3 K and exhibits an anomalously large number of higher-order harmonics. These domain walls are formed by Ising-like Tb spins. They interact by exchanging magnons propagating through the Fe magnetic sublattice. The resulting force between the domain walls has a rather long range that determines the period of the incommensurate state and is analogous to the pion-mediated Yukawa interaction between protons and neutrons in nuclei.},
  author       = {Artyukhin, Sergey and Mostovoy, Maxim and Jensen, Niels Paduraru and Le, Duc and Prokes, Karel and de Paula, Vincius G. and Bordallo, Heloisa N. and Maljuk, Andrey and Landsgesell, Sven and Ryll, Hanjo and Klemke, Bastian and Paeckel, Sebastian and Kiefer, Klaus and Lefmann, Kim and Kuhn, Luise Theil and Argyriou, Dimitri},
  issn         = {1476-4660},
  language     = {eng},
  number       = {8},
  pages        = {694--699},
  publisher    = {Nature Publishing Group},
  series       = {Nature Materials},
  title        = {Solitonic lattice and Yukawa forces in the rare-earth orthoferrite TbFeO3},
  url          = {http://dx.doi.org/10.1038/NMAT3358},
  volume       = {11},
  year         = {2012},
}