Field-induced transition within the superconducting state of CeRh<sub>2</sub>As<sub>2</sub>

doi:10.1126/science.abe7518

GSTDTAP > 气候变化

DOI	10.1126/science.abe7518
	Field-induced transition within the superconducting state of CeRh₂As₂
	S. Khim; J. F. Landaeta; J. Banda; N. Bannor; M. Brando; P. M. R. Brydon; D. Hafner; R. Küchler; R. Cardoso-Gil; U. Stockert; A. P. Mackenzie; D. F. Agterberg; C. Geibel; E. Hassinger
	2021-08-27
发表期刊	Science
出版年	2021
英文摘要	Most superconductors have only one superconducting phase. Khim et al. measured the magnetic susceptibility of the heavy fermion material CeRh2As2 to reveal the presence of two distinct superconducting phases, one of which emerges from the other when an external magnetic field is applied (see the Perspective by Pourret and Knebel). The researchers ascribe the unusual properties of CeRh2As2 to its crystal structure, which is globally centrosymmetric but consists of noncentrosymmetric layers. Science , abe7518, this issue p. [1012][1]; see also abj8193, p. [962][2] Materials with multiple superconducting phases are rare. Here, we report the discovery of two-phase unconventional superconductivity in CeRh2As2. Using thermodynamic probes, we establish that the superconducting critical field of its high-field phase is as high as 14 tesla, even though the transition temperature is only 0.26 kelvin. Furthermore, a transition between two different superconducting phases is observed in a c axis magnetic field. Local inversion-symmetry breaking at the cerium sites enables Rashba spin-orbit coupling alternating between the cerium sublayers. The staggered Rashba coupling introduces a layer degree of freedom to which the field-induced transition and high critical field seen in experiment are likely related. [1]: /lookup/doi/10.1126/science.abe7518 [2]: /lookup/doi/10.1126/science.abj8193
领域	气候变化 ; 资源环境
URL	查看原文
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/336664
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	S. Khim,J. F. Landaeta,J. Banda,et al. Field-induced transition within the superconducting state of CeRh₂As₂[J]. Science,2021.
APA	S. Khim.,J. F. Landaeta.,J. Banda.,N. Bannor.,M. Brando.,...&E. Hassinger.(2021).Field-induced transition within the superconducting state of CeRh₂As₂.Science.
MLA	S. Khim,et al."Field-induced transition within the superconducting state of CeRh₂As₂".Science (2021).