Observation of room-temperature polar skyrmions.


Journal

Nature
ISSN: 1476-4687
Titre abrégé: Nature
Pays: England
ID NLM: 0410462

Informations de publication

Date de publication:
04 2019
Historique:
received: 15 07 2018
accepted: 07 03 2019
entrez: 19 4 2019
pubmed: 19 4 2019
medline: 19 4 2019
Statut: ppublish

Résumé

Complex topological configurations are fertile ground for exploring emergent phenomena and exotic phases in condensed-matter physics. For example, the recent discovery of polarization vortices and their associated complex-phase coexistence and response under applied electric fields in superlattices of (PbTiO

Identifiants

pubmed: 30996320
doi: 10.1038/s41586-019-1092-8
pii: 10.1038/s41586-019-1092-8
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

368-372

Commentaires et corrections

Type : CommentIn

Références

Yadav, A. K. et al. Observation of polar vortices in oxide superlattices. Nature 530, 198–201 (2016); corrigendum 534, 138 (2016).
doi: 10.1038/nature16463
Damodaran, A. et al. Phase coexistence and electric-field control of toroidal order in oxide superlattices. Nat. Mater. 16, 1003–1009 (2017).
doi: 10.1038/nmat4951
Shafer, P. et al. Emergent chirality in polar vortex superlattices. Proc. Natl Acad. Sci. USA 115, 915 (2018).
doi: 10.1073/pnas.1711652115
Rößler, U. K., Bogdanov, A. N. & Pfleiderer, C. Spontaneous skyrmion ground states in magnetic metals. Nature 442, 797–801 (2006).
doi: 10.1038/nature05056
Mühlbauer, S. et al. Skyrmion lattice in a chiral magnet. Science 323, 915–919 (2009).
doi: 10.1126/science.1166767
Fert, A., Cros, V. & Sampaio, J. Skyrmions on the track. Nat. Nanotechnol. 8, 152–156 (2013)
doi: 10.1038/nnano.2013.29
Woo, S. et al. Spin–orbit torque-driven skyrmion dynamics revealed by time-resolved X-ray microscopy. Nat. Commun. 8, 15573 (2017).
doi: 10.1038/ncomms15573
Tomasello, R. et al. A strategy for the design of skyrmion racetrack memories. Sci. Rep. 4, 6784 (2014).
doi: 10.1038/srep06784
Parkin, S. S. P., Hayashi, M. & Thomas, L. Magnetic domain-wall racetrack memory. Science 320, 190 (2008).
doi: 10.1126/science.1145799
Cherifi-Hertel, S. et al. Non-Ising and chiral ferroelectric domain walls revealed by nonlinear optical microscopy. Nat. Commun. 8, 15768 (2017).
doi: 10.1038/ncomms15768
Lee, D. et al. Mixed Bloch–Néel–Ising character of 180° ferroelectric domain walls. Phys. Rev. B 80, 060102 (2009).
doi: 10.1103/PhysRevB.80.060102
Zhang, Q. et al. Nanoscale bubble domains and topological transitions in ultrathin ferroelectric films. Adv. Mater. 29, 1702375 (2017).
doi: 10.1002/adma.201702375
Lai, B. K. et al. Electric-field-induced domain evolution in ferroelectric ultrathin films. Phys. Rev. Lett. 96, 137602 (2006).
doi: 10.1103/PhysRevLett.96.137602
Nahas, Y. et al. Discovery of stable skyrmionic states in ferroelectric nanocomposites. Nat. Commun. 6, 8542 (2015).
doi: 10.1038/ncomms9542
Hong, J., Catalan, G., Fang, D. N., Artacho, E. & Scott, J. F. Topology of the polarization field in ferroelectric nanowires from first principles. Phys. Rev. B 81, 172101 (2010).
doi: 10.1103/PhysRevB.81.172101
Gregg, J. M. Exotic domain states in ferroelectrics: searching for vortices and skyrmions. Ferroelectrics 433, 74–87 (2012).
doi: 10.1080/00150193.2012.678131
Thorner, G. et al. Axial hypertoroidal moment in a ferroelectric nanotorus: a way to switch local polarization. Phys. Rev. B 89, 220103 (2014).
doi: 10.1103/PhysRevB.89.220103
Fong, D. D. et al. Ferroelectricity in ultrathin perovskite films. Science 304, 1650–1653 (2004).
doi: 10.1126/science.1098252
García-Fernández, P., Wojdeł, J. C., Íñiguez, J. & Junquera, J. Second-principles method for materials simulations including electron and lattice degrees of freedom. Phys. Rev. B 93, 195137 (2016).
doi: 10.1103/PhysRevB.93.195137
Mermin, N. D. Topological theory of defects. Rev. Mod. Phys. 51, 591–648 (1979).
doi: 10.1103/RevModPhys.51.591
Tate, M. W. et al. High dynamic range pixel array detector for scanning transmission electron microscopy. Microsc. Microanal. 22, 237–249 (2016).
doi: 10.1017/S1431927615015664
Nelson, C. T. Spontaneous vortex nanodomain arrays at ferroelectric heterointerfaces. Nano Lett. 11, 828–834 (2011).
doi: 10.1021/nl1041808
Yu, X. Z. et al. Real-space observation of a two-dimensional skyrmion crystal. Nature 465, 901–904 (2010).
doi: 10.1038/nature09124
Zuo, J. M. & Spence, J. C. H. in Electron Microdiffraction Ch. 4 (Plenum Press, New York, 1993).
Kirkland, E. J. Computation in electron microscopy. Acta Crystallogr. A 72, 1–27 (2016).
doi: 10.1107/S205327331501757X
Kézsmarki, I. et al. Néel-type skyrmion lattice with confined orientation in the polar magnetic semiconductor GaV
doi: 10.1038/nmat4402
Lovesey, S. W. & van der Laan, G. Resonant X-ray diffraction from chiral electric-polarization structures. Phys. Rev. B 98, 155410 (2018).
doi: 10.1103/PhysRevB.98.155410
Lim, L.-K. & Moessner, R. Pseudospin vortex ring with a nodal line in three dimensions. Phys. Rev. Lett. 118, 016401 (2017).
doi: 10.1103/PhysRevLett.118.016401
Rayfield, G. W. & Reif, F. Quantized vortex rings in superfluid helium. Phys. Rev. 137, AB4 (1965).
doi: 10.1103/PhysRev.137.AB4.6
Eto, M., Hirono, Y. Nitta, M. and Yasui, S. Vortices and other topological solitons solutions in dense quark matter. Prog. Theor. Exp. Phys. 2014, 012D01 (2014).
doi: 10.1093/ptep/ptt095
Ruostekoski, J. J. & Anglin, J. R. Creating vortex rings and three-dimensional skyrmions in Bose–Einstein condensates. Phys. Rev. Lett. 86, 3934–3937 (2001).
doi: 10.1103/PhysRevLett.86.3934
Lee, W. et al. Synthetic electromagnetic knot in a three-dimensional skyrmion. Sci. Adv. 4, eaao3820 (2018).
doi: 10.1126/sciadv.aao3820
Rybakov, F. N., Borisov, A. B. & Bogdanov, A. N. Three-dimensional skyrmion states in thin films of cubic helimagnets. Phys. Rev. B 87, 094424 (2013).
doi: 10.1103/PhysRevB.87.094424
Yadav, A. K. et al. Spatially resolved steady-state negative capacitance. Nature 565, 468–471 (2019).
doi: 10.1038/s41586-018-0855-y
Chen, L.-Q. Phase-field method of phase transitions/domain structures in ferroelectric thin films: a review. J. Am. Ceram. Soc. 91, 1835–1844 (2008).
doi: 10.1111/j.1551-2916.2008.02413.x
Hong, Z. et al. Stability of polar vortex lattice in ferroelectric superlattices. Nano Lett. 17, 2246–2252 (2017).
doi: 10.1021/acs.nanolett.6b04875
Li, Y. L. et al. Effect of substrate constraint on the stability and evolution of ferroelectric domain structures in thin films. Acta Mater. 50, 395–411 (2002).
doi: 10.1016/S1359-6454(01)00360-3
Li, Y. L., Hu, S. Y. & Liu, Z. K. & Chen, L.-Q. Effect of electrical boundary conditions on ferroelectric domain structures in thin films. Appl. Phys. Lett. 81, 427–429 (2002).
doi: 10.1063/1.1492025
Haun, M. J. et al. Thermodynamic theory of PbTiO
doi: 10.1063/1.339293
Sheng, G. et al. A modified Landau–Devonshire thermodynamic potential for strontium titanate. Appl. Phys. Lett. 96, 232902 (2010).
doi: 10.1063/1.3442915
Chen, L.-Q. & Shen, J. Applications of semi-implicit Fourier-spectral method to phase field equations. Comput. Phys. Commun. 108, 147–158 (1998).
doi: 10.1016/S0010-4655(97)00115-X
Wojdeł, J. C., Hermet, P., Ljungberg, M. P., Ghosez, P. & Íñiguez, J. First- principles model potentials for lattice-dynamical studies: general methodology and example of application to ferroic perovskite oxides. J. Phys. Condens. Matter 25, 305401 (2013).
doi: 10.1088/0953-8984/25/30/305401
Wojdeł, J. C. & Íñiguez, J. Ferroelectric transitions at ferroelectric domain walls found from first-principles. Phys. Rev. Lett. 112, 247603 (2014).
doi: 10.1103/PhysRevLett.112.247603
Berg, B. & Lüscher, M. Definition and statistical distributions of a topological number in the lattice O(3) σ-model. Nucl. Phys. B 190, 412–424 (1981).
doi: 10.1016/0550-3213(81)90568-X
Dürr, H. A. et al. Chiral magnetic domain structures in ultrathin FePd films. Science 284, 2166–2168 (1999).
doi: 10.1126/science.284.5423.2166
Jiang, W. et al. Skyrmions in magnetic multilayers. Phys. Rep. 704, 1–49 (2017).
doi: 10.1016/j.physrep.2017.08.001
Bogatyrëv, A. B. et al. What makes magnetic skyrmions different from magnetic bubbles? J. Magn. Magn. Mater. 465, 743–746 (2018).
doi: 10.1016/j.jmmm.2018.06.058

Auteurs

S Das (S)

Department of Materials Science and Engineering, University of California, Berkeley, CA, USA. sujitdas@berkeley.edu.

Y L Tang (YL)

Department of Materials Science and Engineering, University of California, Berkeley, CA, USA.
Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.

Z Hong (Z)

Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA.

M A P Gonçalves (MAP)

Materials Research and Technology Department, Luxembourg Institute of Science and Technology (LIST), Esch/Alzette, Luxembourg.

M R McCarter (MR)

Department of Physics, University of California, Berkeley, CA, USA.

C Klewe (C)

Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.

K X Nguyen (KX)

Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, USA.

F Gómez-Ortiz (F)

Departamento de Ciencias de la Tierra y Física de la Materia Condensada, Universidad de Cantabria, Santander, Spain.

P Shafer (P)

Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.

E Arenholz (E)

Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.

V A Stoica (VA)

Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA, USA.

S-L Hsu (SL)

Department of Materials Science and Engineering, University of California, Berkeley, CA, USA.
National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.

B Wang (B)

Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA.

C Ophus (C)

National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.

J F Liu (JF)

Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.

C T Nelson (CT)

Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, USA.

S Saremi (S)

Department of Materials Science and Engineering, University of California, Berkeley, CA, USA.

B Prasad (B)

Department of Materials Science and Engineering, University of California, Berkeley, CA, USA.

A B Mei (AB)

Department of Materials Science and Engineering, Cornell University, Ithaca, NY, USA.

D G Schlom (DG)

Department of Materials Science and Engineering, Cornell University, Ithaca, NY, USA.
Kavli Institute at Cornell for Nanoscale Science, Ithaca, NY, USA.

J Íñiguez (J)

Materials Research and Technology Department, Luxembourg Institute of Science and Technology (LIST), Esch/Alzette, Luxembourg.
Physics and Material Science Research Unit, University of Luxembourg, Belvaux, Luxembourg.

P García-Fernández (P)

Departamento de Ciencias de la Tierra y Física de la Materia Condensada, Universidad de Cantabria, Santander, Spain.

D A Muller (DA)

Kavli Institute at Cornell for Nanoscale Science, Ithaca, NY, USA.
School of Applied and Engineering Physics, Cornell University, Ithaca, NY, USA.

L Q Chen (LQ)

Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA.

J Junquera (J)

Departamento de Ciencias de la Tierra y Física de la Materia Condensada, Universidad de Cantabria, Santander, Spain.

L W Martin (LW)

Department of Materials Science and Engineering, University of California, Berkeley, CA, USA.
Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.

R Ramesh (R)

Department of Materials Science and Engineering, University of California, Berkeley, CA, USA. rramesh@berkeley.edu.
Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA. rramesh@berkeley.edu.
Department of Physics, University of California, Berkeley, CA, USA. rramesh@berkeley.edu.

Classifications MeSH