Avoided Quantum Criticality and Magnetoelastic Coupling in BaFe2-xNixAs2
文献类型：期刊论文
| 作者 | Lu, XY ; Gretarsson, H ; Zhang, R ; Liu, XR ; Luo, HQ ; Tian, W ; Laver, M ; Yamani, Z ; Kim, YJ ; Nevidomskyy, AH ; Si, QM ; Dai, PC |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2013 |
| 卷号 | 110期号:25 |
| ISSN号 | 0031-9007 |
| 通讯作者 | Lu, XY (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We study the structural and magnetic orders in electron-doped BaFe2-xNixAs2 by high-resolution synchrotron x-ray and neutron scatterings. Upon Ni doping x, the nearly simultaneous tetragonal-to-orthorhombic structural (T-s) and antiferromagnetic (T-N) phase transitions in BaFe2As2 are gradually suppressed and separated, resulting in T-s > T-N with increasing x, as was previously observed. However, the temperature separation between T-s and T-N decreases with increasing x for x >= 0.065, tending toward a quantum bicritical point near optimal superconductivity at x approximate to 0.1. The zero-temperature transition is preempted by the formation of a secondary incommensurate magnetic phase in the region 0: 088 less than or similar to x less than or similar to 0.104, resulting in a finite value of T-N approximate to T-c + 10 K above the superconducting dome around x approximate to 0.1. Our results imply an avoided quantum critical point, which is expected to strongly influence the properties of both the normal and superconducting states. |
| 资助信息 | MOST [2012CB821400, 2011CBA00110]; NSFC [11004233]; Robert A. Welch Foundation [C-1411, C-1818]; NSERC; CFI; U.S. DOE, BES [DE-AC02-98CH10886]; Scientific User Facilities Division; BES; U.S. DOE; [U.S. NSF-DMR-1063866]; [U.S. NSF-DMR-1006985] |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/56794]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Lu, XY,Gretarsson, H,Zhang, R,et al. Avoided Quantum Criticality and Magnetoelastic Coupling in BaFe2-xNixAs2[J]. PHYSICAL REVIEW LETTERS,2013,110(25). |
| APA | Lu, XY.,Gretarsson, H.,Zhang, R.,Liu, XR.,Luo, HQ.,...&Dai, PC.(2013).Avoided Quantum Criticality and Magnetoelastic Coupling in BaFe2-xNixAs2.PHYSICAL REVIEW LETTERS,110(25). |
| MLA | Lu, XY,et al."Avoided Quantum Criticality and Magnetoelastic Coupling in BaFe2-xNixAs2".PHYSICAL REVIEW LETTERS 110.25(2013). |
入库方式： OAI收割
来源：物理研究所
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