Quasiparticle interference testing the possible pairing symmetry in Sr2RuO4

doi:10.1088/1674-1056/ab8888

中国物理B ›› 2020, Vol. 29 ›› Issue (6): 67401-067401.doi: 10.1088/1674-1056/ab8888

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Quasiparticle interference testing the possible pairing symmetry in Sr₂RuO₄

Cong-Cong Zhang(张聪聪), Jin-Hua Sun(孙金华), Yang Yang(杨阳), Wan-Sheng Wang(王万胜)

1 Department of Physics, Ningbo University, Ningbo 315211, China;
2 College of Physics and Electronic Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China;
3 School of Engineering, Lishui University, Lishui 323000, China

收稿日期:2019-12-27 修回日期:2020-03-19 出版日期:2020-06-05 发布日期:2020-06-05
通讯作者: Wan-Sheng Wang E-mail:wangwansheng@nbu.edu.cn
基金资助:
Project supported by the National Natural Science Foundataion of China (Grant Nos. 11604168, 11604166, and 11604303). WSW also acknowledges the supports by K. C. Wong Magna Fund in Ningbo University.

Quasiparticle interference testing the possible pairing symmetry in Sr₂RuO₄

Cong-Cong Zhang(张聪聪)¹, Jin-Hua Sun(孙金华)¹, Yang Yang(杨阳)², Wan-Sheng Wang(王万胜)^1,3

1 Department of Physics, Ningbo University, Ningbo 315211, China;
2 College of Physics and Electronic Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China;
3 School of Engineering, Lishui University, Lishui 323000, China

Received:2019-12-27 Revised:2020-03-19 Online:2020-06-05 Published:2020-06-05
Contact: Wan-Sheng Wang E-mail:wangwansheng@nbu.edu.cn
Supported by:
Project supported by the National Natural Science Foundataion of China (Grant Nos. 11604168, 11604166, and 11604303). WSW also acknowledges the supports by K. C. Wong Magna Fund in Ningbo University.

摘要/Abstract

摘要： The quasiparticle interference (QPI) patterns of the superconducting state in Sr₂RuO₄ are theoretically studied by taking into account the spin-orbital coupling and two different pairing modes, chiral p-wave pairing and equal d-wave pairing, in order to propose an experimental method to test them. Both of the QPI spectra for the two pairing modes have clearly peaks evolving with energy, and their locations can be determined from the tips of the constant energy contour. But the number, location, and evolution of these peaks with energy are different between the two pairing modes. The different behaviors of the QPI patterns in these two pairing modes may help to resolve whether Sr₂RuO₄ is a chiral p-wave or d-wave superconductor.

关键词: Sr₂RuO₄, quasiparticle interference, chiral p-wave, d-wave

Abstract: The quasiparticle interference (QPI) patterns of the superconducting state in Sr₂RuO₄ are theoretically studied by taking into account the spin-orbital coupling and two different pairing modes, chiral p-wave pairing and equal d-wave pairing, in order to propose an experimental method to test them. Both of the QPI spectra for the two pairing modes have clearly peaks evolving with energy, and their locations can be determined from the tips of the constant energy contour. But the number, location, and evolution of these peaks with energy are different between the two pairing modes. The different behaviors of the QPI patterns in these two pairing modes may help to resolve whether Sr₂RuO₄ is a chiral p-wave or d-wave superconductor.

Key words: Sr₂RuO₄, quasiparticle interference, chiral p-wave, d-wave

中图分类号: (Theories and models of superconducting state)

74.20.-z

74.20.Rp (Pairing symmetries (other than s-wave)) 74.70.-b (Superconducting materials other than cuprates)

张聪聪, 孙金华, 杨阳, 王万胜. Quasiparticle interference testing the possible pairing symmetry in Sr₂RuO₄[J]. 中国物理B, 2020, 29(6): 67401-067401.

Cong-Cong Zhang(张聪聪), Jin-Hua Sun(孙金华), Yang Yang(杨阳), Wan-Sheng Wang(王万胜). Quasiparticle interference testing the possible pairing symmetry in Sr₂RuO₄[J]. Chin. Phys. B, 2020, 29(6): 67401-067401.

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Quasiparticle interference testing the possible pairing symmetry in Sr₂RuO₄

Quasiparticle interference testing the possible pairing symmetry in Sr₂RuO₄

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