| 潜在超导母体材料LaOMnSe的第一性原理研究 |
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| 引用本文： | 张敏平,王广涛.潜在超导母体材料LaOMnSe的第一性原理研究[J].低温物理学报,2012(1):32-36. |
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| 作者姓名： | 张敏平 王广涛 |
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| 作者单位： | 河南师范大学物理系信息与工程学院 |
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| 基金项目： | 国家自然科学基金(批准号:10947001)资助的课题~~ |
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| 摘 要： | 通过第一性原理计算，我们研究了LaOMnSe的结构、电子性质和磁性质．我们发现LaOMnSe在11点附近存在三个类空穴费米面，在M点附近有两个类电子费米面．如果将类空穴费米面平移（π，π，O），则类空穴费米面就会和类电子费米面在很大程度上重叠，这种费米面嵌套将会导致磁不稳定性和自旋密度波（SI）、V），和LaOFeAs...
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| 关 键 词： | 第一原理计算 磁性 超导 |
LaOMnSe:A POTENTIASL PARENT COMPOUND OF UPERCONDUCTOR |
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| G Min-ping,ANG Guang-tao.LaOMnSe:A POTENTIASL PARENT COMPOUND OF UPERCONDUCTOR[J].Chinese Journal of Low Temperature Physics,2012(1):32-36. |
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| Authors: | G Min-ping ANG Guang-tao |
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| Institution: | College of Physics and Information Engineering,Henan Normal University,Henan Xinxiang 453007 |
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| Abstract: | By the first-principles calculations,we studied the structure,electronic and magnetic properties of LaOMnSe.there are three hole-like Fermi surfaces around Γ-point and two electron-like Fermi surfaces around M-point.The hole-like Fermi surfaces will strongly overlap with electron-like Fermi surfaces if they are shifted by the q vector(π,π,0).Such Fermi surfaces nesting will induce magnetic instability and spin density wave(SDW),which is similar toLaOFeAs.Because of so much similarity to LaOFeAs,LaOMnSe isexpected to become superconductor with electron or hole doping. |
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| Keywords: | the fIrst-principles calculations magnetic properties superconduction |
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