Interplay of structure and charge order revealed by quantum oscillations in thin films of Pr2CuO4±δ
Interplay of structure and charge order revealed by quantum oscillations in thin films of
Pr2CuO4±δ
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Pr2CuO4±δ 薄膜中量子振荡揭示的结构和电荷顺序的相互作用
DOI：
10.1103/physrevb.100.235111
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发表时间：
2015
影响因子：
3.7
通讯作者：
E. Arenholz
中科院分区：
文献类型：
--
作者：
N. Breznay;I. Hayes;N. Nair;T. Helm;J. Analytis;R. McDonald;Zengwei Zhu;Y. Krockenberger;H. Irie;Hideki Yamamoto;K. Modic;A. Frano;P. Shafer;E. Arenholz
作者：Breznay，NP；海耶斯，IM；荷兰奈尔；赫尔姆，T；分析，JG；麦克唐纳，RD；朱Z;克罗肯伯格，Y；入江，H；山本，H；莫迪奇，KA；弗拉诺，A；谢弗，P；阿伦霍尔兹，E |摘要：© 2019 美国物理学会。空穴和电子掺杂铜酸盐族中量子振荡的发现强调了费米表面在铜酸盐超导中的重要性。虽然在这两个家族中观察到的量子振荡揭示了重建费米表面的存在，但两者之间仍然存在重要区别。在空穴掺杂的铜酸盐中，振荡被认为是由电荷密度波的影响引起的，而在电子掺杂的铜酸盐中，人们认为这些振荡是从反铁磁重构的费米表面发生的，尽管事实上在过掺杂的化合物中观察到振荡，远离假定的反铁磁临界点。在这项工作中，我们研究了 Pr2CuO4±δ 薄膜，其表观掺杂可以通过退火进行微调，从而可以研究跨越临界点的样品中的量子振荡。我们表明，即使准粒子的质量增强，费米表面本身也只有很小的变化，这表明电荷顺序是更可能的起源，电子相关性强烈依赖于结构参数。
Author(s): Breznay, NP; Hayes, IM; Nair, NL; Helm, T; Analytis, JG; McDonald, RD; Zhu, Z; Krockenberger, Y; Irie, H; Yamamoto, H; Modic, KA; Frano, A; Shafer, P; Arenholz, E | Abstract: © 2019 American Physical Society. The discovery of quantum oscillations in hole- A nd electron-doped cuprate families has underscored the importance of the Fermi surface in cuprate superconductivity. While the observed quantum oscillations in both families have revealed the presence of reconstructed Fermi surfaces, there remains an important distinction between the two. In hole-doped cuprates the oscillations are thought to arise from the effects of a charge density wave, while in the electron-doped cuprates it is thought that these oscillations occur from an antiferromagnetically reconstructed Fermi surface, despite the fact that the oscillations are observed in overdoped compounds, far from the putative antiferromagnetic critical point. In this work we study thin films of Pr2CuO4±δ, whose apparent doping can be finely tuned by annealing, allowing studies of quantum oscillations in samples straddling the critical point. We show that even though there is a mass enhancement of the quasiparticles, there are only small changes to the Fermi surface itself, suggesting that charge order is a more likely origin, with electronic correlations that are strongly dependent on the structural parameters.
电子掺杂铜酸盐超导体中重建费米表面的量子振荡
影响因子：
3.3
作者：
Higgins, J S;Chan, M K;Sarkar, Tarapada;McDonald, R D;Greene, R L;Butch, N P
通讯作者：
Butch, N P