Fermi surfaces of iron pnictides investigated by use of magnetic quantum oscillations

利用磁量子振荡研究铁磷族化物的费米面

• 批准号: 168450307
• 负责人: Professor Dr. Joachim Wosnitza
• 金额: --
• 依托单位: Hochfeld-Magnetlabor Dresden
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/168450307?language=en
• 关键词: Fermi; surfaces; iron; pnictides; investigated

In this project the bulk Fermiology of iron pnictides shall be investigated by means of de Haas-van Alphen and Shubnikov-de Haas measurements. Both super-conducting as well as non-superconducting materials will be studied in static fields up to 20 T and pulsed fields beyond 70 T. Besides the Fermi-surface topology, the band-resolved effective masses and many-body interactions as well as the charge-carrier mean-free paths shall be determined. By that we will provide input and test for the theoretical predictions of state-of-the-art band-structure calculations. Resolving magnetic quantum oscillations in the mixed state of superconductivity will allow to probe for possible band-gap anisotropies. The outcome will serve as foundation for theories on the nature of the superconducting state in the iron pnictides.

本项目将利用de Haas-van Alphen和Shubnikov-de哈斯测量研究磷属铁氧化物的体费米学。超导和非超导材料都将在高达20 T的静态场和超过70 T的脉冲场中进行研究。除了费米表面拓扑结构外，还应确定带分辨有效质量和多体相互作用以及电荷载流子平均自由路径。通过这一点，我们将为最先进的能带结构计算的理论预测提供输入和测试。解决超导混合态中的磁量子振荡将允许探测可能的带隙各向异性。这一结果将作为铁磷属元素化物超导态性质的理论基础。

项目成果

Fermi surface of the superconductor BaIr 2 P 2

超导体 Balr 2 P 2 的费米面

• DOI: 10.1103/physrevb.92.134518
• 发表时间: 2015
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: T. Förster;B. Bergk;O. Ignatchik;M. Bartkowiak;S. Blackburn;M. Côté;G. Seyfarth;N. Berry;Z. Fisk;I. Sheikin;A. D. Bianchi;J. Wosnitza
• 通讯作者: J. Wosnitza

Upper critical magnetic field in Ba0.68K0.32Fe2As2 and Ba(Fe0.93Co0.07)2As2

Ba0 68K0 32Fe2As2 和 Ba(Fe0 93Co0 07)2As2 的上临界磁场

• DOI: 10.1134/s0021364011110038
• 发表时间: 2011
• 期刊: JETP Letters
• 影响因子: 1.3
• 作者: V. A. Gasparov;L. Drigo;A. Audouard;D. L. Sun;C. T. Lin;S. L. Bud’ko;P. C. Canfield;F. Wolff-Fabris;J. Wosnitza
• 通讯作者: J. Wosnitza

Electron transport and anisotropy of the upper critical magnetic field in Ba0.68K0.32Fe2As2 single crystals

• DOI: 10.1134/s0021364011010036
• 发表时间: 2010-11
• 期刊: JETP Letters
• 影响因子: 1.3
• 作者: V. Gasparov;F. Wolff-Fabris;D. Sun;C. Lin;J. Wosnitza

Fermi-surface topology of the iron pnictide LaFe2P2

铁磷族元素 LaFe2P2 的费米面拓扑

• DOI: 10.1103/physrevb.89.220505
• 发表时间: 2014
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: S. Blackburn;B. Prévost;M. Bartkowiak;O. Ignatchik;A. Polyakov;T. Förster;M. Côté;G. Seyfarth;C. Capan;Z. Fisk;R. G. Goodrich;I. Sheikin;H. Rosner;A. D. Bianchi;J. Wosnitza
• 通讯作者: J. Wosnitza