Femtosecond dynamics of the collinear-to-spiral antiferromagnetic phase transition in CuO

S. L. Johnson; R. A. De Souza; U. Staub; P. Beaud; E. Möhr-Vorobeva; G. Ingold; A. Caviezel; V. Scagnoli; W. F. Schlotter; J. J. Turner; O. Krupin; W. S. Lee; Y. D. Chuang; L. Patthey; R. G. Moore; D. Lu; M. Yi; P. S. Kirchmann; M. Trigo; P. Denes; D. Doering; Z. Hussain; Z. X. Shen; D. Prabhakaran; A. T. Boothroyd

doi:10.1103/PhysRevLett.108.037203

Femtosecond dynamics of the collinear-to-spiral antiferromagnetic phase transition in CuO

S. L. Johnson, R. A. De Souza, U. Staub, P. Beaud, E. Möhr-Vorobeva, G. Ingold, A. Caviezel, V. Scagnoli, W. F. Schlotter, J. J. Turner, O. Krupin, W. S. Lee, Y. D. Chuang, L. Patthey, R. G. Moore, D. Lu, M. Yi, P. S. Kirchmann, M. Trigo, P. DenesD. Doering, Z. Hussain, Z. X. Shen, D. Prabhakaran, A. T. Boothroyd

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Abstract

We report on the ultrafast dynamics of magnetic order in a single crystal of CuO at a temperature of 207 K in response to strong optical excitation using femtosecond resonant x-ray diffraction. In the experiment, a femtosecond laser pulse induces a sudden, nonequilibrium increase in magnetic disorder. After a short delay ranging from 400 fs to 2 ps, we observe changes in the relative intensity of the magnetic ordering diffraction peaks that indicate a shift from a collinear commensurate phase to a spiral incommensurate phase. These results indicate that the ultimate speed for this antiferromagnetic reorientation transition in CuO is limited by the long-wavelength magnetic excitation connecting the two phases.

Original language	English
Article number	037203
Journal	Physical Review Letters
Volume	108
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevLett.108.037203
State	Published - Jan 19 2012
Externally published	Yes

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Johnson, S. L., De Souza, R. A., Staub, U., Beaud, P., Möhr-Vorobeva, E., Ingold, G., Caviezel, A., Scagnoli, V., Schlotter, W. F., Turner, J. J., Krupin, O., Lee, W. S., Chuang, Y. D., Patthey, L., Moore, R. G., Lu, D., Yi, M., Kirchmann, P. S., Trigo, M., ... Boothroyd, A. T. (2012). Femtosecond dynamics of the collinear-to-spiral antiferromagnetic phase transition in CuO. Physical Review Letters, 108(3), Article 037203. https://doi.org/10.1103/PhysRevLett.108.037203

@article{dd16cf973d534c33b644c07b110e0cf4,

title = "Femtosecond dynamics of the collinear-to-spiral antiferromagnetic phase transition in CuO",

abstract = "We report on the ultrafast dynamics of magnetic order in a single crystal of CuO at a temperature of 207 K in response to strong optical excitation using femtosecond resonant x-ray diffraction. In the experiment, a femtosecond laser pulse induces a sudden, nonequilibrium increase in magnetic disorder. After a short delay ranging from 400 fs to 2 ps, we observe changes in the relative intensity of the magnetic ordering diffraction peaks that indicate a shift from a collinear commensurate phase to a spiral incommensurate phase. These results indicate that the ultimate speed for this antiferromagnetic reorientation transition in CuO is limited by the long-wavelength magnetic excitation connecting the two phases.",

author = "Johnson, \{S. L.\} and \{De Souza\}, \{R. A.\} and U. Staub and P. Beaud and E. M{\"o}hr-Vorobeva and G. Ingold and A. Caviezel and V. Scagnoli and Schlotter, \{W. F.\} and Turner, \{J. J.\} and O. Krupin and Lee, \{W. S.\} and Chuang, \{Y. D.\} and L. Patthey and Moore, \{R. G.\} and D. Lu and M. Yi and Kirchmann, \{P. S.\} and M. Trigo and P. Denes and D. Doering and Z. Hussain and Shen, \{Z. X.\} and D. Prabhakaran and Boothroyd, \{A. T.\}",

year = "2012",

month = jan,

day = "19",

doi = "10.1103/PhysRevLett.108.037203",

language = "English",

volume = "108",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "3",

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Johnson, SL, De Souza, RA, Staub, U, Beaud, P, Möhr-Vorobeva, E, Ingold, G, Caviezel, A, Scagnoli, V, Schlotter, WF, Turner, JJ, Krupin, O, Lee, WS, Chuang, YD, Patthey, L, Moore, RG, Lu, D, Yi, M, Kirchmann, PS, Trigo, M, Denes, P, Doering, D, Hussain, Z, Shen, ZX, Prabhakaran, D & Boothroyd, AT 2012, 'Femtosecond dynamics of the collinear-to-spiral antiferromagnetic phase transition in CuO', Physical Review Letters, vol. 108, no. 3, 037203. https://doi.org/10.1103/PhysRevLett.108.037203

TY - JOUR

T1 - Femtosecond dynamics of the collinear-to-spiral antiferromagnetic phase transition in CuO

AU - Johnson, S. L.

AU - De Souza, R. A.

AU - Staub, U.

AU - Beaud, P.

AU - Möhr-Vorobeva, E.

AU - Ingold, G.

AU - Caviezel, A.

AU - Scagnoli, V.

AU - Schlotter, W. F.

AU - Turner, J. J.

AU - Krupin, O.

AU - Lee, W. S.

AU - Chuang, Y. D.

AU - Patthey, L.

AU - Moore, R. G.

AU - Lu, D.

AU - Yi, M.

AU - Kirchmann, P. S.

AU - Trigo, M.

AU - Denes, P.

AU - Doering, D.

AU - Hussain, Z.

AU - Shen, Z. X.

AU - Prabhakaran, D.

AU - Boothroyd, A. T.

PY - 2012/1/19

Y1 - 2012/1/19

N2 - We report on the ultrafast dynamics of magnetic order in a single crystal of CuO at a temperature of 207 K in response to strong optical excitation using femtosecond resonant x-ray diffraction. In the experiment, a femtosecond laser pulse induces a sudden, nonequilibrium increase in magnetic disorder. After a short delay ranging from 400 fs to 2 ps, we observe changes in the relative intensity of the magnetic ordering diffraction peaks that indicate a shift from a collinear commensurate phase to a spiral incommensurate phase. These results indicate that the ultimate speed for this antiferromagnetic reorientation transition in CuO is limited by the long-wavelength magnetic excitation connecting the two phases.

AB - We report on the ultrafast dynamics of magnetic order in a single crystal of CuO at a temperature of 207 K in response to strong optical excitation using femtosecond resonant x-ray diffraction. In the experiment, a femtosecond laser pulse induces a sudden, nonequilibrium increase in magnetic disorder. After a short delay ranging from 400 fs to 2 ps, we observe changes in the relative intensity of the magnetic ordering diffraction peaks that indicate a shift from a collinear commensurate phase to a spiral incommensurate phase. These results indicate that the ultimate speed for this antiferromagnetic reorientation transition in CuO is limited by the long-wavelength magnetic excitation connecting the two phases.

UR - https://www.scopus.com/pages/publications/84859796332

U2 - 10.1103/PhysRevLett.108.037203

DO - 10.1103/PhysRevLett.108.037203

M3 - Article

AN - SCOPUS:84859796332

SN - 0031-9007

VL - 108

JO - Physical Review Letters

JF - Physical Review Letters

IS - 3

M1 - 037203

ER -

Femtosecond dynamics of the collinear-to-spiral antiferromagnetic phase transition in CuO

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