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 CrNb3S6. 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 Tc (123 K). The stripe order disappears at around 140 K, far above Tc. We argue that this cascade of transitions reflects a three-stage hierarchical behavior of melting in two dimensions.
| Original language | English |
|---|---|
| Article number | 017204 |
| Journal | Physical Review Letters |
| Volume | 122 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 9 2019 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
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Anomalous Temperature Behavior of the Chiral Spin Helix in CrNb3 S6 Thin Lamellae. / Togawa, Y.; Kishine, J.; Nosov, P. A.; Koyama, T.; Paterson, G. W.; McVitie, S.; Kousaka, Y.; Akimitsu, Jun; Ogata, M.; Ovchinnikov, A. S.
In: Physical Review Letters, Vol. 122, No. 1, 017204, 09.01.2019.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Anomalous Temperature Behavior of the Chiral Spin Helix in CrNb3 S6 Thin Lamellae
AU - Togawa, Y.
AU - Kishine, J.
AU - Nosov, P. A.
AU - Koyama, T.
AU - Paterson, G. W.
AU - McVitie, S.
AU - Kousaka, Y.
AU - Akimitsu, Jun
AU - Ogata, M.
AU - Ovchinnikov, A. S.
PY - 2019/1/9
Y1 - 2019/1/9
N2 - 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 CrNb3S6. 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 Tc (123 K). The stripe order disappears at around 140 K, far above Tc. We argue that this cascade of transitions reflects a three-stage hierarchical behavior of melting in two dimensions.
AB - 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 CrNb3S6. 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 Tc (123 K). The stripe order disappears at around 140 K, far above Tc. We argue that this cascade of transitions reflects a three-stage hierarchical behavior of melting in two dimensions.
UR - http://www.scopus.com/inward/record.url?scp=85059849513&partnerID=8YFLogxK
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U2 - 10.1103/PhysRevLett.122.017204
DO - 10.1103/PhysRevLett.122.017204
M3 - Article
C2 - 31012683
AN - SCOPUS:85059849513
VL - 122
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 1
M1 - 017204
ER -