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TT: Tiefe Temperaturen

TT 16: Posters Correlated Electrons, Measuring Devices, Cryotechnique

TT 16.10: Poster

Saturday, March 5, 2005, 11:00–16:30, Poster TU C

Possible resolution of a temperature profile: A spin-chain study — •Markus Henrich, Michael Hartmann, and Günter Mahler — Institute of Theoretical Physics 1, University of Stuttgart

Possible spatial resolution of temperature profiles and their measurability have drawn increasing attention because of their relevance in recent experiments [1].
We investigate such a scenario in a simple quantum model: a spin-chain in contact with two heat baths at different temperatures. We study, under which conditions a local spin-temperature could exist in such spin-chains and how local a possible temperature measurement could be [2].
P. Kim et al, Phys. Rev. Lett. 87/21, 215502 (2001).
M. Hartmann et al, Phys. Rev. Lett. 93, 080402 (2004).