Random field effects in field-driven quantum critical points
被引:0
|
作者:
F. Anfuso
论文数: 0引用数: 0
h-index: 0
机构:University of Cologne,Institute for Theoretical Physics
F. Anfuso
A. Rosch
论文数: 0引用数: 0
h-index: 0
机构:University of Cologne,Institute for Theoretical Physics
A. Rosch
机构:
[1] University of Cologne,Institute for Theoretical Physics
来源:
The European Physical Journal B
|
2009年
/
69卷
关键词:
71.10.-w Theories and models of many-electron systems;
71.27.+a Strongly correlated electron systems; heavy fermions;
75.10.-b General theory and models of magnetic ordering;
D O I:
暂无
中图分类号:
学科分类号:
摘要:
We investigate the role of disorder for field-driven
quantum phase transitions of metallic antiferromagnets. For systems
with sufficiently low symmetry, the combination of a uniform
external field and non-magnetic impurities leads effectively to a
random magnetic field which strongly modifies the behavior close to
the critical point. Using perturbative renormalization group, we
investigate in which regime of the phase diagram the disorder
affects critical properties. In heavy fermion systems where even
weak disorder can lead to strong fluctuations of the local Kondo
temperature, the random field effects are especially pronounced. We
study possible manifestation of random field effects in experiments
and discuss in this light neutron scattering results for the field
driven quantum phase transition in CeCu5.8Au0.2.
机构:
Northeastern Univ, Coll Sci, Shenyang 110819, Liaoning Provin, Peoples R ChinaNortheastern Univ, Coll Sci, Shenyang 110819, Liaoning Provin, Peoples R China
Liu, Yan
Yan, Huan
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机构:
Northeastern Univ, Coll Sci, Shenyang 110819, Liaoning Provin, Peoples R ChinaNortheastern Univ, Coll Sci, Shenyang 110819, Liaoning Provin, Peoples R China
Yan, Huan
Jia, Min
论文数: 0引用数: 0
h-index: 0
机构:
Northeastern Univ, Coll Sci, Shenyang 110819, Liaoning Provin, Peoples R ChinaNortheastern Univ, Coll Sci, Shenyang 110819, Liaoning Provin, Peoples R China
Jia, Min
Du, Haifeng
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h-index: 0
机构:
Chinese Acad Sci, High Magnet Field Lab, Hefei 230031, Anhui, Peoples R China
Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R ChinaNortheastern Univ, Coll Sci, Shenyang 110819, Liaoning Provin, Peoples R China
Du, Haifeng
Du, An
论文数: 0引用数: 0
h-index: 0
机构:
Northeastern Univ, Coll Sci, Shenyang 110819, Liaoning Provin, Peoples R ChinaNortheastern Univ, Coll Sci, Shenyang 110819, Liaoning Provin, Peoples R China
Du, An
Zang, Jiadong
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h-index: 0
机构:
Univ New Hampshire, Dept Phys, Durham, NH 03824 USA
Univ New Hampshire, Mat Sci Program, Durham, NH 03824 USANortheastern Univ, Coll Sci, Shenyang 110819, Liaoning Provin, Peoples R China
机构:
Univ Paris 05, CNRS, UMR 8145, MAP5, 45 Rue St Peres, F-75006 Paris, FranceUniv Paris 05, CNRS, UMR 8145, MAP5, 45 Rue St Peres, F-75006 Paris, France
Estrade, Anne
Fournier, Julie
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h-index: 0
机构:
Univ Paris 05, CNRS, UMR 8145, MAP5, 45 Rue St Peres, F-75006 Paris, France
Univ Paris 06, F-75252 Paris 05, FranceUniv Paris 05, CNRS, UMR 8145, MAP5, 45 Rue St Peres, F-75006 Paris, France
机构:Florida State University,Center for Materials Research and Technology, School of Computational Science and Information Technology, and Department of Physics
Per Arne Rikvold
M. Kolesik
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机构:Florida State University,Center for Materials Research and Technology, School of Computational Science and Information Technology, and Department of Physics
M. Kolesik
Journal of Statistical Physics,
2000,
100
: 377
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403