G. Caimi et al 2006 Europhys. Lett. 75 496 doi:10.1209/epl/i2005-10603-3
Optical evidence for a magnetically driven structural transition in the spin web Cu3TeO6
G. Caimi1, L. Degiorgi1, H. Berger2 and L. Forró2
Show affiliationsCu3TeO6 is a modest frustrated S = 1/2 spin system, which undergoes an antiferromagnetic transition at TN ~ 63 K. The antiferromagnetic spin alignment in Cu3TeO6 below TN is supposed to induce a magneto-elastic strain of the lattice. The complete absorption spectrum of Cu3TeO6 is obtained through Kramers-Kronig transformation of the optical reflectivity, measured from the far-infrared up to the ultraviolet spectral range as a function of temperature (T). Below T* ~ 50 K, we find a new mode at 208 cm−1. The spectral weight associated to this additional mode increases as 
(T* − T)1/2 with decreasing T below T*. The implication of the optical findings will be discussed in relation to the magnetic phase transition at TN.
- PACS
-
78.20.-e Optical properties of bulk materials and thin films
- Subjects
- Dates
-
Issue 3 (August 2006)
Received 30 November 2005, accepted for publication 9 June 2006, in final form 9 June 2006
Published 30 June 2006
-
Optical evidence for a magnetically driven structural transition in the spin web Cu3TeO6
G. Caimi et al 2006 Europhys. Lett. 75 496
-
Asymptotic symmetry in strongly monotone skew-product semiflows with applications
Yi Wang 2009 Nonlinearity 22 765
-
Scalar field as dark matter in the universe
Tonatiuh Matos et al 2000 Class. Quantum Grav. 17 1707
-
A method to determine collection efficiency of particles by swipe sampling
J R Verkouteren et al 2008 Meas. Sci. Technol. 19 115101
-
absorption spectra of pure lithium niobate crystals
Yongfa Kong et al 1999 J. Phys.: Condens. Matter 11 2139
-
Detection and identification of atomic clock anomalies
Lorenzo Galleani and Patrizia Tavella 2008 Metrologia 45 S127
-
A hybrid evolutionary algorithm for multi-objective anatomy-based dose optimization in high-dose-rate brachytherapy
M Lahanas et al 2003 Phys. Med. Biol. 48 399
-
Author index with titles
2003 J. Micromech. Microeng. 13 971
-
Ultra-Scale Visualization: Research and Education
Kwan-Liu Ma et al 2007 J. Phys.: Conf. Ser. 78 012088
-
Delay of laser excited electron/hole interaction with germanium lattice
Edward A Stern and Dale Brewe 2009 J. Phys.: Conf. Ser. 190 012053