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Multiple phases with intertwined magnetic and superconducting orders in Nd-doped CeCoIn5
- Source :
- Physical Review B. 97
- Publication Year :
- 2018
- Publisher :
- American Physical Society (APS), 2018.
-
Abstract
- The thermal conductivity of heavy-fermion superconductor ${\mathrm{Ce}}_{0.95}{\mathrm{Nd}}_{0.05}{\mathrm{CoIn}}_{5}$ was measured with a magnetic field rotating in the tetragonal $a\text{\ensuremath{-}}b$ plane. The thermal conductivity exhibits a step within the high-field low-temperature (HFLT) phase, which exists above 8 Tesla within the superconducting state, when field is rotated through the antinodal [100] direction of the superconducting $d$-wave order parameter. This anomaly indicates the presence of a third order parameter within the HFLT phase, similar to that of pure ${\mathrm{CeCoIn}}_{5}$. Therefore, the HFLT state with triply intertwined orders, i.e., superconducting $d$-wave, magnetic spin-density wave (SDW), and a putative superconducting $p$-wave pair-density wave (PDW), is robust against 5% Nd doping. The second magnetic phase within the superconducting state below 8 Tesla, a low-field SDW, displays a hysteresis in thermal conductivity as a function of field magnitude, which is also revealing the existence of a third order consistent with a $p$-wave PDW. Given different origins and properties of the HFLT and low-field SDW states, the presence of three intertwined orders in both phases is remarkable and of far-reaching consequences.
- Subjects :
- Superconductivity
Physics
Field (physics)
Condensed matter physics
Order (ring theory)
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
Magnetic field
Tetragonal crystal system
Hysteresis
Thermal conductivity
Condensed Matter::Superconductivity
Phase (matter)
0103 physical sciences
010306 general physics
0210 nano-technology
Subjects
Details
- ISSN :
- 24699969 and 24699950
- Volume :
- 97
- Database :
- OpenAIRE
- Journal :
- Physical Review B
- Accession number :
- edsair.doi...........73dd6e59d840524df01d91905fee4df6