New black holes with hyperscaling violation for the transports of quantum critical points with magnetic impurity
New black holes with hyperscaling violation for the transports of quantum critical points with magnetic impurity
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带有磁性杂质的量子临界点传输具有超尺度破坏的新黑洞
DOI：
10.1007/jhep06(2020)128
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发表时间：
2019-12
影响因子：
5.4
通讯作者：
Geunho Song
中科院分区：
文献类型：
--
作者：
Xian-Hui Ge;Yunseok Seo;Sang-Jin Sin;Geunho Song
我们考虑了在量子临界点附近掺杂磁性杂质的量子物质的磁输运。为此，我们首先找到了新的具有超尺度破坏的黑洞解，它是对偶的。考虑到精确解附近的波动，我们用全息法计算了所有输运系数。我们将我们的结果应用于磁性掺杂的拓扑绝缘体的表面态，发现了两个QCP，一个是玻色子，另一个是费米子。结果表明，掺杂的Bi2Se3和Bi2Te3对应不同的QCP。我们还研究了QCP的输运随物理参数的变化，发现存在从弱局域化到弱反局域化的相变和交叉。
We consider the magneto-transports of quantum matters doped with magnetic impurities near the quantum critical points (QCP). For this, we first find new black hole solution with hyper-scaling violation which is dual to such system. By considering the fluctuation near this exact solution, we calculated all transport coefficients using the holographic method. We applied our result to the surface state of the topological insulator with magnetic doping and found two QCP’s, one bosonic and the other fermionic. It turns out that doped Bi2Se3 and Bi2Te3 correspond to different QCP’s. We also investigated transports of QCP’s as functions of physical parameters and found that there are phase transitions as well as crossovers from weak localization to weak anti-localization.
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影响因子：
5.4
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通讯作者：
Bom Soo Kim
影响因子：
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作者：
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