Literature DB >> 17303749

Multiple energy scales at a quantum critical point.

P Gegenwart1, T Westerkamp, C Krellner, Y Tokiwa, S Paschen, C Geibel, F Steglich, E Abrahams, Q Si.   

Abstract

We report thermodynamic measurements in a magnetic-field-driven quantum critical point of a heavy fermion metal, YbRh2Si2. The data provide evidence for an energy scale in the equilibrium excitation spectrum that is in addition to the one expected from the slow fluctuations of the order parameter. Both energy scales approach zero as the quantum critical point is reached, thereby providing evidence for a new class of quantum criticality.

Entities:  

Year:  2007        PMID： 17303749     DOI： 10.1126/science.1136020

Source DB:  PubMed          Journal:  Science        ISSN： 0036-8075            Impact factor:   47.728


  7 in total

1.  Destruction of the Kondo effect in the cubic heavy-fermion compound Ce3Pd20Si6.

Authors:  J Custers; K A Lorenzer; M Müller; A Prokofiev; A Sidorenko; H Winkler; A M Strydom; Y Shimura; T Sakakibara; R Yu; Q Si; S Paschen
Journal:  Nat Mater       Date:  2012-01-10       Impact factor: 43.841

2.  Critical quasiparticle theory applied to heavy fermion metals near an antiferromagnetic quantum phase transition.

Authors:  Elihu Abrahams; Peter Wölfle
Journal:  Proc Natl Acad Sci U S A       Date:  2012-02-13       Impact factor: 11.205

3.  Fermi-surface collapse and dynamical scaling near a quantum-critical point.

Authors:  Sven Friedemann; Niels Oeschler; Steffen Wirth; Cornelius Krellner; Christoph Geibel; Frank Steglich; Silke Paschen; Stefan Kirchner; Qimiao Si
Journal:  Proc Natl Acad Sci U S A       Date:  2010-07-28       Impact factor: 11.205

4.  Breakdown of the Bardeen-Cooper-Schrieffer ground state at a quantum phase transition.

Authors:  R Jaramillo; Yejun Feng; J C Lang; Z Islam; G Srajer; P B Littlewood; D B McWhan; T F Rosenbaum
Journal:  Nature       Date:  2009-05-21       Impact factor: 49.962

5.  Heavy-fermion quantum criticality and destruction of the Kondo effect in a nickel oxypnictide.

Authors:  Yongkang Luo; Leonid Pourovskii; S E Rowley; Yuke Li; Chunmu Feng; Antoine Georges; Jianhui Dai; Guanghan Cao; Zhu'an Xu; Qimiao Si; N P Ong
Journal:  Nat Mater       Date:  2014-05-25       Impact factor: 43.841

6.  Quantum critical behavior in heavy electron materials.

Authors:  Yi-feng Yang; David Pines
Journal:  Proc Natl Acad Sci U S A       Date:  2014-05-27       Impact factor: 11.205

7.  Evolution of the Kondo lattice and non-Fermi liquid excitations in a heavy-fermion metal.

Authors:  S Seiro; L Jiao; S Kirchner; S Hartmann; S Friedemann; C Krellner; C Geibel; Q Si; F Steglich; S Wirth
Journal:  Nat Commun       Date:  2018-08-20       Impact factor: 14.919
  7 in total

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