Details of Grant 

EPSRC Reference:	GR/A00201/01
Title:	AF: NOVEL QUANTUM EFFECTS AND NONLINEAR RESPONSE IN ST RONGLY CORRELATED LOW-DIMENSIONAL MATERIALS
Principal Investigator:	Essler, Professor FHL
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Department:	Physics
Organisation:	University of Warwick
Scheme:	Advanced Fellowship (Pre-FEC)
Starts:	01 April 2000	Ends:	17 February 2002	Value (£):	110,881
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Summary on Grant Application Form
I am interested in properties of low-dimensional quantum systems that have for a long time attracted, and continue to attract, much experimental attention. Low-dimensional materials exhibit many original phenomena. Examples are the electron-phonon driven Peierls instability, nonlinear excitations with fractional statistics and peculiar quantum effects due to strong correlations like spin-charge separation. In view of potential technological applications to e.g. switching and memory systems or negative resistance devices, it is essential to have a precise understanding of the nature as well as the stability of the distinctive phenomena, that occur in these materials.In the following I outline my plans to study magnetic response in very anisotropic magnetic subtances, as well as transport in organic conductors and recently fabricated nanostructures called quantum wires. Magnetic response and transport measurements are two standard experimental probes and provide detailed information about dynamical properties. A theory for the aforementioned materials must take into account the strong correlations in the many-body problem, which requires the use of nonperturbative methods. I have been actively involved in the development of such methods, which have the added benefit of providing exact results in many of the experimentally relevant cases over the last several years and have acquired unique experience.I plan to use my expertise to develop a detailed theoretical description of dynamical properties of quantum wires and organic conductors.
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Organisation Website:	http://www.warwick.ac.uk