Ultra-fast spectroscopy investigation of Verwey transition in magnetite

Mokhtari, A; Neal, J R; Blythe, H J; Gehring, G A

doi:10.18869/acadpub.ijpr.15.3.345

Ultra-fast spectroscopy investigation of Verwey transition in magnetite

Authors

A Mokhtari

J R Neal

H J Blythe

G A Gehring

https://doi.org/10.18869/acadpub.ijpr.15.3.345

Abstract

Magnetite has a different electrical resistance behavior with temperatures below and above the Verwey temperature. Here, we report on Verwey transition in Fe3O4 by means of the frequency-doubled output from the Ti-sapphire laser in pump-probe experiments and from the insulator to metal transition observed by changing the temperature at the wavelength 370nm (~3.36 eV) both for pump and probe. We observed a clear difference below and above the Verwey temperature in ultra-fast transmission changes.

Keywords

Verwey transition

magnetite

metal-insulation transition

pump-probe

1. J P Wright, J Paul Attfield, Paolo, and G Radaelli, Phys. Rev. B. 66 (2002) 214422.
2. V N Antonov, B N Harmon, V P Antropov, A Ya Perlov, and A N Yaresko, Phys. Rev. B. 64 (2001) 134410.
3. J Garcia, G Subias, M G Proietti, J Blasco, H Renevier, J L Hodeau, and Y Joly, Phys. Rev . B. 63 (2001) 054110.
4. J R Neal, A J Behan, A Mokhtari, M R Ahmed, H J Blythe, A M Fox, and G A Gehring, J. Mag. Mag. Mat. 310 (2007) e246.
5. N Pontius, et al., Appl. Phys. Lett. 98 (2011) 182504.
6. S P Sena, R A Lindley, H J Blythe, Ch Sauer, M Al-Kafarji, G A Gehring, J. Mag. Mag. Mat. 176 (1997) 111.
7. A Cavalleri, Th Dekorsy, H H W Chong, J C Kieffer, and R W Schoenlein, Phys. Rev. B, 70 (2004) 161102(R).
8. S Lysenko, A Rua, V Vikhinin, F Fernandez, and H Liu, Phys. Rev. B, 76 (2007) 035104