Controlled pairing symmetry of the superfluid state in systems of three-component repulsive fermionic atoms in optical lattices
Controlled pairing symmetry of the superfluid state in systems of three-component repulsive fermionic atoms in optical lattices
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光学晶格中三组分排斥费米子原子系统中超流态的受控配对对称性
DOI：
10.1103/physreva.92.023617
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Sei-ichiroSuga
中科院分区：
文献类型：
--
作者：
Takeno;M.;Ueno;T.;Kitagami;S.;Allen;R.J.;Baddeley;A.D.;& Hitch;G.J.;一川誠;Sei-ichiroSuga
研究了光晶格中排斥相互作用三分量（色）费米子原子超流态的配对对称性。当三个颜色相关的排斥中的两个比另一个强得多时，配对对称性是扩展波，尽管超流态在相图中出现在配对的Mott绝缘体附近。另一方面，当三个颜色相关排斥中的两个比另一个弱时，配对对称性是波动的。这种配对对称性的变化是由于占主导地位的量子涨落从未配对原子的密度涨落和颜色密度波涨落到颜色选择性反铁磁涨落的变化。这种现象可以用现有的实验技术来研究。
We investigate the pairing symmetry of the superfluid state in repulsively interacting three-component (color) fermionic atoms in optical lattices. When two of the three color-dependent repulsions are much stronger than the other, pairing symmetry is an extendedwave, although the superfluid state appears adjacent to the paired Mott insulator in the phase diagram. On the other hand, when two of the three color-dependent repulsions are weaker than the other, pairing symmetry is awave. This change in pairing symmetry is attributed to the change in the dominant quantum fluctuations from the density fluctuations of unpaired atoms and the color-density wave fluctuations to the color-selective antiferromagnet fluctuations. This phenomenon can be studied using existing experimental techniques.