Possible zero sound in layered perovskites with ferromagnetic s-d exchange interaction

被引：1

作者：

Mishonov, Todor M. ^{[1
]}

Zahariev, Nedelcho I. ^{[1
]}

Chamati, Hassan ^{[1
]}

Varonov, Albert M. ^{[1
]}

机构：

[1] Bulgarian Acad Sci, Georgi Nadjakov Inst Solid State Phys, 72 Tzarigradsko Chaussee, BG-1784 Sofia, Bulgaria

来源：

SN APPLIED SCIENCES | 2022年 / 4卷 / 08期

关键词：

Zero sound; s-d Exchange interaction; Hot spots; Cold spots; High-Tc superconductivity; Transverse sound modes; SCATTERING;

D O I：

10.1007/s42452-022-05107-8

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We analyze the conditions for observation of zero sound in layered perovskites with transition metal ion on chalcogenide oxidizer. We conclude that propagation of zero sound is possible only for a ferromagnetic sign of the s-d interaction. If the s-d exchange integral J(sd) has antiferromagnetic sign, as it is perhaps in the case for layered cuprates, zero sound is a thermally activated dissipation mode, which generates only "hot spots" in the Angle Resolved Photoemission Spectroscopy (ARPES) data along the Fermi contour. We predict that zero sound will be observable for transition metal perovskites with 4s and 3d levels close to the p-level of the chalcogenide. The simultaneous lack of superconductivity, the appearance of hot spots in ARPES data, and the proximity of the three named levels, represents the significant hint for the choice of material to be investigated.

引用

页数：9