Quantum spin dynamics

Research group

Research theme

Sub department

About

Magnetothermoelectric effects in (TMTSF)2 Cl O4

Physical Review B Condensed Matter and Materials Physics 74:7 (2006)

Authors:

MS Nam, A Ardavan, W Wu, PM Chaikin

Abstract:

We have measured the thermopower and Nernst effects in the quasi-one-dimensional organic molecular metal (TMTSF)2 Cl O4 as a function of temperature and magnetic field strength and orientation. At 10 K this material exhibits a maximum Nernst coefficient of 12 μVKT, one of the largest ever observed in a metal. The thermoelectric effects are very sensitive to the reconstruction of the band structure caused by the Cl O4 anion ordering. © 2006 The American Physical Society.
More details from the publisher

Determination of the thermal stability of the fullerene dimers C120, C120O, and C120O2.

J Phys Chem B 110:34 (2006) 16979-16981

Authors:

Jinying Zhang, Kyriakos Porfyrakis, Mark R Sambrook, Arzhang Ardavan, G Andrew D Briggs

Abstract:

We have produced the fullerene dimers C(120), C(120)O, and C(120)O(2) by a high-speed vibration milling technique. The thermal stability of C(120), C(120)O, and C(120)O(2) has been studied in the temperature range 150-350 degrees C for up to 4 h under vacuum. The bridging oxygen atoms were found to substantially increase the stability of the fullerene dimer molecules.
More details from the publisher
More details

Determination of the thermal stability of the fullerene dimers C 120, C120O, and C120O2

Journal of Physical Chemistry B 110:34 (2006) 16979-16981

Authors:

J Zhang, K Porfyrakis, MR Sambrook, A Ardavan, GAD Briggs

Abstract:

We have produced the fullerene dimers C120, C120O, and C120O2 by a high-speed vibration milling technique. The thermal stability of C120, C120O, and C 120O2 has been studied in the temperature range 150-350°C for up to 4 h under vacuum. The bridging oxygen atoms were found to substantially increase the stability of the fullerene dimer molecules. © 2006 American Chemical Society.
More details from the publisher

Morphology of the nonspherically decaying radiation beam generated by a rotating superluminal source

(2006)

Authors:

Houshang Ardavan, Arzhang Ardavan, John Singleton, Joseph Fasel, Andrea Schmidt
More details from the publisher

Multifrequency millimeter wave study of excited energy states in the high-spin molecule Cr10 (OMe) 20 (O2 CCMe3) 10

Physical Review B - Condensed Matter and Materials Physics 73:21 (2006)

Authors:

S Sharmin, A Ardavan, SJ Blundell, O Rival, P Goy, EJL McInnes, DM Low

Abstract:

We report multifrequency high-field millimeter-wave magneto-optical measurements on the high-spin molecule, Cr10 (OMe) 20 (O2 CCMe3) 10. We find that at temperatures above 15 K and at magnetic fields above 6 T, the simple ESR spectrum expected for a single molecule magnet is markedly altered. Our data strongly suggest the presence of a higher spin excited state multiplet lying only about 10 K above the ground state. © 2006 The American Physical Society.
More details from the publisher
More details