Перевод названия: OСОБЕННОСТЬ ВЗАИМОСВЯЗИ ЭЛЕКТРОННЫХ И МАГНИТНЫХ СВОЙСТВ ВТСП-КУПРАТОВ, ОБУСЛОВЛЕННАЯ БЛИЖНИМ АНТИФЕРРОМАГНИТНЫМ ПОРЯДКОМ
Тип публикации: статья из журнала
Год издания: 2010
Идентификатор DOI: 10.1134/S1063776110070101
Ключевые слова: Anisotropic resistivity, Antiferromagnetic orders, Concentration dependence, Cuprates, Doping levels, Electronic and magnetic properties, Fermi surface topology, High temperature superconducting, Magnetic orders, Magnetic state, Maximum values, Pseudo-gap, Short-range magnetic orders, Strong electron correlations, Temperature dependence, Anisotropy, Antiferromagnetic materials, Antiferromagnetism, Copper compounds, Correlators, Electronic properties, High temperature superconductors, Hole concentration, Magnetic properties, Neon, Superconducting magnets, Single crystals
Аннотация: We report on the results of measurements of anisotropic resistivity of RBa(2)Cu(3)O(6 + x) (R = Tm, Lu) high-temperature superconducting single crystals in a wide range of doping levels, indicating a nontrivial effect of magnetic order on the electronic properties of cuprates. In particular, our results visually demonstrate the croПоказать полностьюssover from the state with moderate anisotropy of resistivity rho (c) /rho (ab) similar to 30 to a strongly anisotropic state with rho (c) /rho (ab) similar to 7 x 10(3) upon cooling as well as upon a decrease in the hole concentration in the CuO(2) planes. It is also shown that anisotropy is sensitive to the magnetic state of CuO(2) planes and attains its maximum value after the establishment of the long-range antiferromagnetic order. The results are discussed in the framework of the theory based on the t-t'-taEuro(3)-J model of CuO(2) layers taking into account strong electron correlations and short-range magnetic order. In this theory, anomalies of spin correlators and Fermi surface topology for a critical hole concentration of p* a parts per thousand 0.24 are demonstrated. The concentration dependence of the charge carrier energy indicates partial suppression of energy due to the emergence of a pseudogap at p
Журнал: JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS
Выпуск журнала: Vol. 111, Is. 1
Номера страниц: 104-113
ISSN журнала: 10637761
Место издания: NEW YORK
Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER