Quantum criticality in the pseudogap Bose-Fermi Anderson and Kondo models: Interplay between fermion- and boson-induced Kondo destruction

نویسندگان

  • J. H. Pixley
  • Stefan Kirchner
  • Kevin Ingersent
  • Qimiao Si
چکیده

J. H. Pixley,1 Stefan Kirchner,2,3 Kevin Ingersent,4 and Qimiao Si1 1Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA 2Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany 3Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany 4Department of Physics, University of Florida, Gainesville, Florida 32611-8440, USA (Received 10 June 2013; revised manuscript received 27 September 2013; published 10 December 2013)

برای دانلود رایگان 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

Kondo physics and dissipation: A numerical renormalization-group approach to Bose-Fermi Kondo models

We extend the numerical renormalization-group method to treat Bose-Fermi Kondo models BFKMs describing a local moment coupled both to a conduction band and to a dissipative bosonic bath representing, e.g., lattice or spin collective excitations of the environment. We apply the method to the Ising-symmetry BFKM with a structureless band and a bath spectral function s. The method is valid for all...

متن کامل

Pseudogap Fermi-Bose Kondo model.

We consider a magnetic impurity coupled to both fermionic quasiparticles with a pseudogap density of states and bosonic spin fluctuations. Using renormalization group and large-N calculations we investigate the phase diagram of the resulting Fermi-Bose Kondo model. We show that the Kondo temperature is strongly reduced by low-energy spin fluctuations, and make connections to experiments in cupr...

متن کامل

Quantum critical Kondo destruction in the Bose-Fermi Kondo model with a local transverse field

Recent studies of the global phase diagram of quantum-critical heavy-fermion metals prompt consideration of the interplay between the Kondo interactions and quantum fluctuations of the local moments alone. Toward this goal, we study a Bose-Fermi Kondo model (BFKM) with Ising anisotropy in the presence of a local transverse field that generates quantum fluctuations in the local-moment sector. We...

متن کامل

Numerical renormalization-group study of the Bose-Fermi Kondo model.

We extend the numerical renormalization-group method to Bose-Fermi Kondo models (BFKMs), describing a local moment coupled to a conduction band and a dissipative bosonic bath. We apply the method to the Ising-symmetry BFKM with a bosonic bath spectral function eta(omega) proportional omega(s), of interest in connection with heavy-fermion criticality. For 0 < s < 1, an interacting critical point...

متن کامل

سیستمهای ناکام و همبسته الکترونی

 Quantum phases and fluctuations in correlated electron systems with frustration and competing interactions are reviewed. In the localized moment case the S=1/2 J1 - J2 - model on a square lattice exhibits a rich phase diagram with magnetic as well as exotic hidden order phases due to the interplay of frustration and quantum fluctuations. Their signature in magnetocaloric quantities and the hig...

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

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2013