Superconductivity in a doped mott insulator

نویسنده

  • Lee
چکیده

Starting from the d-wave resonating-valence-bond mean-field theory of Kotliar and Liu, we present a new, long-wavelength/low-energy exact, treatment of gauge fluctuations. The result is a theory of gapless fermion quasiparticles coupled to superconducting phase fluctuations. We will discuss the physical implications, and the similarity and differences to a theory of superconductors with phase fluctuations.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Visualizing the atomic-scale electronic structure of the Ca2CuO2Cl2 Mott insulator.

Although the mechanism of superconductivity in the cuprates remains elusive, it is generally agreed that at the heart of the problem is the physics of doped Mott insulators. A crucial step for solving the high temperature superconductivity puzzle is to elucidate the electronic structure of the parent compound and the behaviour of doped charge carriers. Here we use scanning tunnelling microscopy...

متن کامل

ابررسانایی در کوپراتهای بهینه آلاییده: برنامه BZA به خوبی کار می‌کند و ابر تعادل چسب است

  Resonating valence bond states in a doped Mott insulator was proposed to explain superconductivity in cuprates in January 1987 by Anderson. A challenging task then was proving existence of this unconventional mechanism and a wealth of possibilities, with a rigor acceptable in standard condensed matter physics, in a microscopic theory and develop suitable many body techniques. Shortly, a paper...

متن کامل

An Electronic Model for CoO2 layer based systems: Chiral RVB metal and Superconductivity

Takada et al. have reported superconductivity in layered NaxCoO2.yH2O (Tc ≈ 5 K) and more recently Wen et al. in AxCoO2+δ (A = Na, K)(Tc ≈ 31 K). We model a reference neutral CoO2 layer as an orbitally non-degenerate spin1 2 antiferromagnetic Mott insulator on a triangular lattice and NaxCoO2.yH2O and AxCoO2+δ as electron doped Mott insulators described by a tJ model. It is suggested that at op...

متن کامل

On an SO(5) unification attempt for the cuprates

Zhang [1] in his paper ‘A unified theory based on SO(5) symmetry of superconductivity and antiferromagnetism, Science 275 1089 (97)’ has argued that there exists an approximate global SO(5) symmetry in the low temperature phase of the high Tc cuprates. This suggestion contains a five component order parameter: three components correspond to a spin 1, charge zero particle-hole pair condensed at ...

متن کامل

Strong coupling superconductivity, pseudogap, and Mott transition.

An intricate interplay between superconductivity, pseudogap, and Mott transition, either bandwidth driven or doping driven, occurs in materials. Layered organic conductors and cuprates offer two prime examples. We provide a unified perspective of this interplay in the two-dimensional Hubbard model within cellular dynamical mean-field theory on a 2×2 plaquette and using the continuous-time quant...

متن کامل

Universality of pseudogap and emergent order in lightly doped Mott insulators

Universality of pseudogap and emergent order in lightly doped Mott insulators I. Battisti*, K.M. Bastiaans*, V. Fedoseev, A. de la Torre, N. Iliopoulos, A. Tamai, E.C. Hunter, R.S. Perry, J. Zaanen, F. Baumberger, M.P. Allan 1 Leiden Institute of Physics, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, The Netherlands 2 Department of Quantum Matter Physics, University of Geneva, 24 Quai Ern...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Physical review letters

دوره 84 12  شماره 

صفحات  -

تاریخ انتشار 2000