2004 Workshop on Colossal Magnetoresistive Manganites and Related Transition Metal Oxides



Dan Dessau (University of Colorado; dessau@colorado.edu)

Jaime Fernandez-Baca (Oak Ridge National Laboratory; jfn@ornl.gov)

Adriana Moreo (Florida State University, adriana@magnet.fsu.edu)




The renewed interest in the physics of transition metal (TM) oxides has been led by the strong effort to understand the colossal magnetoresistive (CMR) manganites.  As efforts on the manganites mature, unifying themes are emerging. For example, the strong coupling between the spin, charge, lattice and orbital degrees of freedom gives rise to competing interactions, and thus a wide variety of ground state behavior.  These ground states include: phase segregation and/or stripe formation, magnetic and orbital ordering, and insulating or metallic charge transport, all of which are closely related to the degree of local lattice distortions.  Varying the effective dimensionality of the materials can alter these effects, as well.  Many of these themes appear in other TM oxides (stripes in nickelates and cuprates, for example), and it is advantageous to discuss the physics of the CMR manganites in the broader context of the oxides in general. This is extremely beneficial to the TM oxides community.

Goals of the workshop

·      To disseminate the most recent results in the physics of TM oxides.

·      To provide a forum that advocates the identification of the unifying themes among manganites and other TM oxides.

·      To identify future directions for research in TM and other oxides.

·      To encourage new collaborations among experimental and/or theoretical programs among national laboratories, and to strengthen ongoing collaborations

Workshop Format

Towards this end, the workshop on “CMR Manganites and Related Transition Metal Oxides” will take place at  the Telluride Summer Research Center, Telluride, CO, June 28-July 3 2004.  This workshop will be a sequel to the highly successful Telluride workshops on magnetoresistive oxides held July of 1998, 2000 and 2002.  Participation to this workshop is by invitation only, the participants have been selected to represent the current research efforts in the area of CMR and/or related oxide physics, with a strong emphasis on work of interest to both the CMR and related oxides communities. 


The workshop format will be similar to the popular Gordon Research Conferences, allowing for intensive discussion of each presentation, as well as for general topical discussions.  This format will consist of morning sessions with 30-minute presentations, followed by free afternoons and informal evening discussion periods.  The experience from the 1998, 2000 and 2002 workshops demonstrated that this approach was not only highly effective, but also extremely well-received by all participants.  Likewise, the environment in Telluride will foster free and open interactions.

The workshop program has been designed to broadly cover issues of materials preparation, structure-property relationships, role of phase segregation, dynamics, etc. in CMR and related materials. The list of talks will include CMR presentations, as well as a number of seminars  addressing the properties of cobaltates, ruthenates, and cuprates. By incorporating these topics the organizers expect to stimulate exchanges leading to the identification of commonalities among the various classes of oxide materials.

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