Nature and mechanism of the photoinduced spin transition in $[\mathrm{Fe}(\mathrm{PM}\text{\ensuremath{-}}\mathrm{BiA}{)}_{2}(\mathrm{NCS}{)}_{2}]$

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Nature and mechanism of the photoinduced spin transition in $[Fe (PM − BiA)_{2} (NCS)_{2}]$

K. Ichiyanagi, J. Hebert, L. Toupet, H. Cailleau, P. Guionneau, J.-F. Létard, and E. Collet

Phys. Rev. B 73, 060408(R) – Published 21 February 2006

Abstract

We report the investigation of a prototype cooperative photoinduced spin transition in $[Fe (PM − BiA)_{2} (NCS)_{2}]$ by x-ray diffraction. The structural rearrangement accompanying the change of an electronic state between the low spin and the photoinduced out-of-equilibrium high spin phases is similar to the one occurring around the phase transition at thermal equilibrium. The cooperative behavior of the light-induced optical hysteresis and light-induced thermal hysteresis phenomena investigated here show a strong similarity with thermal hysteresis around first-order phase transitions, since they are driven by a domain nucleation process.

Received 14 October 2005

DOI:https://doi.org/10.1103/PhysRevB.73.060408

Authors & Affiliations

K. Ichiyanagi^1,2, J. Hebert¹, L. Toupet¹, H. Cailleau^1,3, P. Guionneau⁴, J.-F. Létard⁴, and E. Collet^1,3,*

¹Groupe Matière Condensée et Matériaux, UMR 6626 CNRS, Université de Rennes 1, 35042 Rennes Cedex, France
²Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503, Japan
³Non-equilibrium Dynamics Project, ERATO, Japan Science and Technology Agency, c/o KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
⁴Institut de Chimie de la Matière Condensée de Bordeaux, UPR CNRS 9048, Université Bordeaux I, 33608 Pessac, France

^*Author to whom correspondence should be addressed. E-mail address: Eric.collet@univ-rennes1.fr

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Vol. 73, Iss. 6 — 1 February 2006

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Physical Review B

covering condensed matter and materials physics

Nature and mechanism of the photoinduced spin transition in $[Fe (PM − BiA)_{2} (NCS)_{2}]$

K. Ichiyanagi, J. Hebert, L. Toupet, H. Cailleau, P. Guionneau, J.-F. Létard, and E. Collet

Phys. Rev. B 73, 060408(R) – Published 21 February 2006

Abstract

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Physical Review B

covering condensed matter and materials physics

Nature and mechanism of the photoinduced spin transition in [Fe(PM−BiA)2(NCS)2]

K. Ichiyanagi, J. Hebert, L. Toupet, H. Cailleau, P. Guionneau, J.-F. Létard, and E. Collet

Phys. Rev. B 73, 060408(R) – Published 21 February 2006

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Nature and mechanism of the photoinduced spin transition in $[Fe (PM − BiA)_{2} (NCS)_{2}]$