Togawa, Y., Kishine, J., Nosov, P.A., Koyama, T., Paterson, G.W. , McVitie, S. , Kousaka, Y., Akimitsu, J., Ogata, M. and Ovchinnikov, A.S. (2019) Anomalous temperature behavior of the chiral spin helix in CrNb3S6 thin lamellae. Physical Review Letters, 122(1), 017204. (doi: 10.1103/PhysRevLett.122.017204)
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Abstract
Using Lorentz transmission electron microscopy and small-angle electron scattering techniques, we investigate the temperature-dependent evolution of a magnetic stripe pattern period in thin-film lamellae} of the prototype monoaxial chiral helimagnet CrNb 3 S 6 . The sinusoidal stripe pattern appears due to formation of a chiral helimagnetic order (CHM) in this material. We found that as the temperature increases, the CHM period is initially independent of temperature and then starts to shrink above the temperature of about 90 K}, which is far below the magnetic phase transition temperature for the bulk material, T c (123~K)}. The stripe order disappears at around 140~K, far above T c . We argue that this cascade of transitions reflects a three-stage hierarchical behavior of melting in two dimensions.
Item Type: | Articles |
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Additional Information: | Y. T. and J. K. acknowledge support from Grant-in-Aids for Scientific Research (Nos. 25220803, 17H02767, 17H02923). A. S. O. and P. A. N. acknowledge funding by the RFBR, Grant No. 17-52-50013, and the Foundation for the Advancement to Theoretical Physics and Mathematics BASIS Grant No. 17-11-107. This work was supported by Chirality Research Center (Crescent) in Hiroshima University. The work was also supported by the Government of the Russian Federation Program 02.A03.21.0006, JSPS and RFBR under the Japan - Russia Research Cooperative Program, JSPS Core-to-Core Program, A. Advanced Research Networks, and UK research council, EPSRC, grant EP/M024423/1. |
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Togawa, Dr Yoshihiko and McVitie, Professor Stephen and Paterson, Dr Gary |
Authors: | Togawa, Y., Kishine, J., Nosov, P.A., Koyama, T., Paterson, G.W., McVitie, S., Kousaka, Y., Akimitsu, J., Ogata, M., and Ovchinnikov, A.S. |
College/School: | College of Science and Engineering > School of Physics and Astronomy |
Journal Name: | Physical Review Letters |
Publisher: | American Physical Society |
ISSN: | 0031-9007 |
ISSN (Online): | 1079-7114 |
Published Online: | 09 January 2019 |
Copyright Holders: | Copyright © 2019 American Physical Society |
First Published: | First published in Physical Review Letters 122(1): 017204 |
Publisher Policy: | Reproduced in accordance with the publisher copyright policy |
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