Multiple phases with intertwined magnetic and superconducting orders in Nd-doped
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
In this study, the thermal conductivity of heavy-fermion superconductor Ce0.95Nd0.05CoIn5 was measured with a magnetic field rotating in the tetragonal a-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 CeCoIn5. 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. Lastly, 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.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE
- Grant/Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1479923
- Alternate ID(s):
- OSTI ID: 1454358
- Report Number(s):
- LA-UR-17-28485; PRBMDO
- Journal Information:
- Physical Review B, Vol. 97, Issue 24; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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