Investigating the cause of crossover from charge/spin-stripe insulator to correlated metallic phase in layered T′ nickelates R4Ni3O8 (R=La,Pr,orNd),Physical Review B - X-MOL

当前位置： X-MOL 学术 › Phys. Rev. B › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Investigating the cause of crossover from charge/spin-stripe insulator to correlated metallic phase in layered T′ nickelates R4Ni3O8 (R=La,Pr,orNd)
Physical Review B ( IF 3.2 ) Pub Date : 2024-09-09 , DOI: 10.1103/physrevb.110.094412
Dibyata Rout ₁ , Sanchayeta Ranajit Mudi ₁ , Suman Karmakar ₂ , Rajeev Rawat ₂ , Surjeet Singh ₁

Affiliation

The infinite layered (

T^{'}

) nickelates have recently garnered significant attention due to the discovery of superconductivity in hole-doped

{R NiO}_{2}

(

R = La, \Pr, or Nd

), which is the

n = \infty

member of the series

R_{n + 1} {Ni}_{n} O_{2 n + 2}

. Here, we investigate the

n = 3

member, namely

R_{4} {Ni}_{3} O_{8}

(

R = La, \Pr, or Nd

), of this family. The compound

{La}_{4} {Ni}_{3} O_{8}

exhibits simultaneous charge/spin-stripe ordering at

T_{N}^{*}

= 105 K, which occurs concomitantly with the onset of the metal-to-insulator (MIT) transition below

T_{N}^{*}

. We investigate the conspicuous absence of this transition in the Pr and Nd analogs of

{La}_{4} {Ni}_{3} O_{8}

. For this purpose, we synthesized solid solutions of the form

(La, {\Pr)}_{4} {Ni}_{3} O_{8}

and

(La, {Nd)}_{4} {Ni}_{3} O_{8}

, and examined the behavior of

T_{N}^{*}

as a function of the average

R

-site ionic radius (

r_{\bar{R}}

). We show that after an initial quasilinear decrease with decreasing

r_{\bar{R}}, T_{N}^{*}

suddenly vanishes in the narrow range

1.134 \leq r_{\bar{R}} \leq 1.143 Å

. In the same range, we observed the emergence of a weak anomaly in the specific heat, whose onset temperature (

T^{*}

) increases as

r_{\bar{R}}

further decreases reaching a maximum of 13 K for

{Nd}_{4} {Ni}_{3} O_{8}

. We suggest, therefore, that the sudden vanishing of charge/spin-stripe/MIT ordering upon decreasing

r_{\bar{R}}

is related to the appearance of this new electronic phase for

r_{\bar{R}} < r_{c}

. The nature of this phase or the weak anomaly and the point

r_{\bar{R}} \approx r_{c}

, where

T_{N}^{*}

vanishes and

T^{*}

appears, should be investigated further. In this regard,

\Pr_{4} {Ni}_{3} O_{8}

and Pr-rich samples should be useful due to the weak magnetization response associated with the Pr sublattice, as shown here.

中文翻译：

研究层状 T' 镍酸盐 R4Ni3O8 (R=La,Pr,orNd) 中从电荷/自旋条纹绝缘体到相关金属相的交叉原因

无限分层（

T^{'}

）由于空穴掺杂超导性的发现，镍酸盐最近引起了极大的关注

{R NiO}_{2}

(

R = La, \Pr, or Nd

），这是

n = \infty

系列成员

R_{n + 1} {Ni}_{n} O_{2 n + 2}

。在这里，我们调查

n = 3

成员，即

R_{4} {Ni}_{3} O_{8}

(

R = La, \Pr, or Nd

），这个家庭的。该化合物

{La}_{4} {Ni}_{3} O_{8}

表现出同时充电/旋转条纹排序

T_{N}^{*}

= 105 K，与下面的金属到绝缘体 (MIT) 转变同时发生

T_{N}^{*}

。我们研究了 Pr 和 Nd 类似物中明显缺乏这种转变。

{La}_{4} {Ni}_{3} O_{8}

。为此，我们合成了以下形式的固溶体

(La, {\Pr)}_{4} {Ni}_{3} O_{8}

和

(La, {Nd)}_{4} {Ni}_{3} O_{8}

，并检查了行为

T_{N}^{*}

作为平均值的函数

R

位点离子半径（

r_{\bar{R}}

）。我们表明，在初始拟线性下降之后

r_{\bar{R}}, T_{N}^{*}

突然消失在狭窄的范围内

1.134 \leq r_{\bar{R}} \leq 1.143 Å

。在同一范围内，我们观察到比热出现了微弱异常，其起始温度为（

T^{*}

) 增加为

r_{\bar{R}}

进一步降低达到最大值 13 K

{Nd}_{4} {Ni}_{3} O_{8}

。因此，我们建议，电荷/自旋条纹/MIT 排序在减少时突然消失

r_{\bar{R}}

与这种新电子相的出现有关

r_{\bar{R}} < r_{c}

。此阶段或弱异常的性质和点

r_{\bar{R}} \approx r_{c}

，在哪里

T_{N}^{*}

消失并且

T^{*}

看来，应该进一步调查。对此，

\Pr_{4} {Ni}_{3} O_{8}

由于与 Pr 亚晶格相关的弱磁化响应，富含 Pr 的样品应该很有用，如此处所示。

更新日期：2024-09-12

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南

相关文章参考文献引文

点击加载相关文章

全部期刊列表>>

阿拉丁

分享您的投稿习惯

经济学SSCI期刊

英语语言编辑翻译加编辑新

加速出版服务新

1212购书送好礼

Springer旗下全新催化方向高质新刊

动物学生物学

系统生物学合成生物学

专注于基础生命科学与临床研究的交叉领域

传播分子、细胞和发育生物学领域的重大发现

聚焦分子细胞和生物体生物学

图书出版流程

快速找到合适的投稿机会

热点论文一站获取

定位全球科研英才

中国图象图形学学会合作刊

南科大

上海交大

多伦多

新加坡

上海师范

清华大学

福州大学

兰州化物所

南京大学

厦门大学

ACS材料视界

客服邮箱：service@x-mol.com
官方微信：X-molTeam2
邮编：100098
地址：北京市海淀区知春路56号中航科技大厦

bug