Electric Dipolar Kondo Effect Emerging from a Vibrating Magnetic Ion

Takashi Hotta and Kazuo Ueda
Phys. Rev. Lett. 108, 247214 – Published 15 June 2012

Abstract

When a magnetic ion vibrates in a metal, it inevitably introduces a new channel of hybridization with conduction electrons, and in general, the vibrating ion induces an electric dipole moment. In such a situation, we find that magnetic and nonmagnetic Kondo effects alternatively occur due to the screening of the spin moment and electric dipole moment of the vibrating ion. In particular, the electric dipolar two-channel Kondo effect is found to occur for a weak Coulomb interaction. We also show that a magnetically robust heavy-electron state appears near the fixed point of the electric dipolar two-channel Kondo effect. We believe that the vibrating magnetic ion opens a new door in Kondo physics.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 19 October 2011

DOI:https://doi.org/10.1103/PhysRevLett.108.247214

© 2012 American Physical Society

Authors & Affiliations

Takashi Hotta1 and Kazuo Ueda2

  • 1Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
  • 2Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 108, Iss. 24 — 15 June 2012

Reuse & Permissions
Access Options

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×