Role of four-fermion interaction and impurity in the states of two-dimensional semi-Dirac materials
Role of four-fermion interaction and impurity in the states of two-dimensional semi-Dirac materials
复制标题
四费米子相互作用和杂质在二维半狄拉克材料态中的作用
DOI:
10.1088/1361-648x/aaa8ce/meta
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发表时间:
2018-03
期刊:
影响因子:
--
通讯作者:
JingWang
中科院分区:
文献类型:
--
作者:
JingWang
We study the effects of four-fermion interaction and impurity on the low-energy states of 2D semi-Dirac materials by virtue of the unbiased renormalization group approach. The coupled flow equations that govern the energy-dependent evolutions of all correlated interaction parameters are derived after taking into account one-loop corrections from the interplay between four-fermion interaction and impurity. Whether and how four-fermion interaction and impurity influence the low-energy properties of 2D semi-Dirac materials are discreetly explored and addressed attentively. After carrying out the standard renormalization group analysis, we find that both trivial insulating and nontrivial semimetal states are qualitatively stable against all four kinds of four-fermion interactions. However, while switching on both four-fermion interaction and impurity, certain insulator–semimetal phase transitions and the distance of Dirac nodal points can be respectively induced and modified due to their strong interplay and intimate competition. Moreover, several non-Fermi liquid behaviors that deviate from the conventional Fermi liquids are exhibited at the lowest-energy limit.
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影响因子:
8.6
作者:
Chan, Ching-Kit;Lee, Patrick A.;Ran, Ying
通讯作者:
Ran, Ying
影响因子:
3.7
作者:
I. Boettcher;I. Herbut
通讯作者:
I. Boettcher;I. Herbut
影响因子:
3.7
作者:
Jing Wang;Guo-Zhu Liu
通讯作者:
Guo-Zhu Liu
影响因子:
3.7
作者:
Jing Wang
通讯作者:
Jing Wang
DOI:
10.1093/benz/9780199773787.article.b00170547
发表时间:
--
期刊:
--
影响因子:
--
作者:
通讯作者:
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