Two-loop disorder effects on the nematic quantum criticality in d-wave superconductors
Two-loop disorder effects on the nematic quantum criticality in d-wave superconductors
复制标题
双环无序效应对 d 波超导体向列量子临界性的影响
DOI:
10.1016/j.physleta.2015.05.028
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发表时间:
2015-05
影响因子:
2.6
通讯作者:
Jing Wang
中科院分区:
文献类型:
--
作者:
Jing Wang
The gapless nodal fermions exhibit non-Fermi liquid behaviors at the nematic quantum critical point that is supposed to exist in some-wave cuprate superconductors. This non-Fermi liquid state may be turned into a disorder-dominated diffusive metal if the fermions also couple to a disordered potential that generates a relevant perturbation in the sense of renormalization group theory. It is therefore necessary to examine whether a specific disorder is relevant or not. We study the interplay between critical nematic fluctuation and random chemical potential by performing renormalization group analysis. The parameter that characterizes the strength of random chemical potential is marginal at the one-loop level, but becomes marginally relevant after including the two-loop corrections. Thus even weak random chemical potential leads to diffusive motion of nodal fermions and the significantly critical behaviors of physical implications, since the strength flows eventually to large values at low energies.
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影响因子:
3.7
作者:
Ying Zhang;E. Demler;S. Sachdev
通讯作者:
Ying Zhang;E. Demler;S. Sachdev
影响因子:
3.7
作者:
Jing Wang
通讯作者:
Jing Wang
DOI:
10.1016/0550-3213(95)00002-a
发表时间:
1995-04
期刊:
Nuclear Physics
影响因子:
--
作者:
A. Nersesyan;A. Tsvelik;F. Wenger
通讯作者:
A. Nersesyan;A. Tsvelik;F. Wenger
影响因子:
3.7
作者:
FRADKIN, E
通讯作者:
FRADKIN, E
DOI:
10.1103/revmodphys.66.129
发表时间:
1993-07
期刊:
--
影响因子:
--
作者:
P. Kopietz
通讯作者:
P. Kopietz