Schedule Nov 19, 2002
Hot and cold spots of the electron relaxation time in Q1D organic conductors and in curates
Victor Yakovenko, University of Maryland
Electronic transport properties are discussed using a model where the electron relaxation time strongly varies around the Fermi surface. For Q1D conductors, we calculate the distribution of the umklapp relaxation time and find the so-called "hot spots" at low temperatures. This model produces good quantitative fits of the temperature dependence of resistivity and Hall coefficient in the organic conductor (TMTSF)2PF6. For cuprates, a phenomenological model with "cold spots" at the Brillouin zone diagonals is useful for describing dc and ac magnetotranspot, such as Hall effect.

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