%0 Journal Article %1 chu96 %A Chubukov, Andrey V. %A Pines, David %A Stojkovic, Branko P. %D 1996 %J Journal of Physics: Condensed Matter %K high-tc, theory %N 48 %P 10017--10036 %R 10.1088/0953-8984/8/48/021 %T Temperature crossovers in cuprates %U http://dx.doi.org/10.1088/0953-8984/8/48/021 %V 8 %X We study the temperature crossovers seen in the magnetic and transport properties of cuprates using a nearly antiferromagnetic Fermi-liquid model (NAFLM). We distinguish between underdoped and overdoped systems on the basis of their low-frequency magnetic behaviour and so classify the optimally doped cuprates as a special case of the underdoped cuprates. For the overdoped cuprates, we find, in agreement with earlier work, mean-field z = 2 behaviour of the magnetic variables associated with the fact that the damping rate of their spin fluctuations is essentially independent of temperature, while the resistivity exhibits a crossover from Fermi-liquid behaviour at low temperature to linear-in-T behaviour above a certain temperature . We demonstrate that above the proximity of the quasiparticle Fermi surface to the magnetic Brillouin zone boundary brings about the measured linear-in-T resistivity. For the underdoped cuprates we argue that the sequence of crossovers identified by Barzykin and Pines in the low-frequency magnetic behaviour (from mean-field z = 2 behaviour at high temperatures, , to non-universal z = 1 scaling behaviour at intermediate temperatures, , to pseudogap behaviour below ) reflects the development in the electronic structure of a precursor to a spin-density-wave state. This development begins at with a thermal evolution of the quasiparticle spectral weight which brings about temperature-dependent spin damping and ends at where the Fermi surface has lost pieces near corners of the magnetic Brillouin zone. For the resistivity is linear in T because this change in spectral weight does not affect the resistivity significantly; below vertex corrections act to bring about the measured downturn in and approximately quadratic-in-T resistivity for .

@article{chu96, abstract = {We study the temperature crossovers seen in the magnetic and transport properties of cuprates using a nearly antiferromagnetic Fermi-liquid model (NAFLM). We distinguish between underdoped and overdoped systems on the basis of their low-frequency magnetic behaviour and so classify the optimally doped cuprates as a special case of the underdoped cuprates. For the overdoped cuprates, we find, in agreement with earlier work, mean-field z = 2 behaviour of the magnetic variables associated with the fact that the damping rate of their spin fluctuations is essentially independent of temperature, while the resistivity exhibits a crossover from Fermi-liquid behaviour at low temperature to linear-in-T behaviour above a certain temperature . We demonstrate that above the proximity of the quasiparticle Fermi surface to the magnetic Brillouin zone boundary brings about the measured linear-in-T resistivity. For the underdoped cuprates we argue that the sequence of crossovers identified by Barzykin and Pines in the low-frequency magnetic behaviour (from mean-field z = 2 behaviour at high temperatures, , to non-universal z = 1 scaling behaviour at intermediate temperatures, , to pseudogap behaviour below ) reflects the development in the electronic structure of a precursor to a spin-density-wave state. This development begins at with a thermal evolution of the quasiparticle spectral weight which brings about temperature-dependent spin damping and ends at where the Fermi surface has lost pieces near corners of the magnetic Brillouin zone. For the resistivity is linear in T because this change in spectral weight does not affect the resistivity significantly; below vertex corrections act to bring about the measured downturn in and approximately quadratic-in-T resistivity for .}, added-at = {2008-06-25T19:30:29.000+0200}, author = {Chubukov, Andrey V. and Pines, David and Stojkovic, Branko P.}, biburl = {https://www.bibsonomy.org/bibtex/2791aceca4d06c055f752b024e2f0194c/jgl}, citeulike-article-id = {2917479}, doi = {10.1088/0953-8984/8/48/021}, interhash = {fc36315d8d29acf0d71d2dce974d5346}, intrahash = {791aceca4d06c055f752b024e2f0194c}, journal = {Journal of Physics: Condensed Matter}, keywords = {high-tc, theory}, number = 48, pages = {10017--10036}, posted-at = {2008-06-23 10:37:14}, priority = {2}, timestamp = {2008-06-25T19:30:32.000+0200}, title = {Temperature crossovers in cuprates}, url = {http://dx.doi.org/10.1088/0953-8984/8/48/021}, volume = 8, year = 1996 }