Nonlocal excitations and 1/8 singularity in cuprates
نویسندگان
چکیده
منابع مشابه
Magnetic excitations of stripes and checkerboards in the cuprates
We discuss the magnetic excitations of well-ordered stripe and checkerboard phases, including the high energy magnetic excitations of recent interest and possible connections to the “resonance peak” in cuprate superconductors. Using a suitably parametrized Heisenberg model and spin wave theory, we study a variety of magnetically ordered configurations, including vertical and diagonal siteand bo...
متن کاملTheory of spin excitations in undoped and underdoped cuprates
We consider the magnetic properties of high Tc cuprates from a gauge theory point of view, with emphasis on the underdoped regime. Underdoped cuprates possess certain antiferromagnetic correlations, as evidenced, for example, by different temperature dependence of the Cu and O site NMR relaxation rates, that are not captured well by slave boson mean field theories of the t-J model. We show that...
متن کاملSpin susceptibility in bilayered cuprates: Resonant magnetic excitations
Ilya Eremin,1 Dirk K. Morr,2,3 Andrey V. Chubukov,4 and Karl Bennemann2 1Max-Planck Institut für Physik komplexer Systeme, D-01187 Dresden, Germany and Institute für Mathematische und Theoretische Physik, TU-Braunschweig, D-38106 Braunschweig, Germany 2Institut für Theoretische Physik, Freie Universität Berlin, D-14195 Berlin, Germany 3Department of Physics, University of Illinois at Chicago, C...
متن کاملConformal Invariance on Orbifolds and Excitations of Singularity
We study conformal field theory on two-dimensional orbifolds and show this to be an effective way to analyze physical effects of geometric singularities with angular deficits. They are closely related to boundaries and cross caps. Representatives classes of singularities can be described exactly using generalizations of boundary states. From this we compute correlation functions and derive the ...
متن کاملTransport of quantum excitations via local and nonlocal fluctuations
In quantum systems, one usually seeks to minimize dephasing noise and disorder. The efficiency of transport in a quantum system is usually degraded by the presence of noise and disorder. However, it has been shown that the combination of the two can lead to significantly more efficiency than each by itself. Here, we consider how the addition of nonlocal noise, in the form of incoherent hopping,...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Korean Physical Society
سال: 2013
ISSN: 0374-4884,1976-8524
DOI: 10.3938/jkps.62.1827