Extended nuclear quadrupole resonance study of the heavy-fermion superconductor
Abstract
PuCoGa 5 has emerged as a prototypical heavy-fermion superconductor, with its transition temperature (T c≃18.5 K) being the highest amongst such materials. Nonetheless, a clear description as to what drives the superconducting pairing is still lacking, rendered complicated by the notoriously intricate nature of plutonium's 5f valence electrons. Here, we present a detailed 69,71Ga nuclear quadrupole resonance (NQR) study of PuCoGa 5, concentrating on the system's normal state properties near to T c and aiming to detect distinct signatures of possible pairing mechanisms. In particular, the quadrupole frequency and spin-lattice relaxation rate were measured for the two crystallographically inequivalent Ga sites and for both Ga isotopes, in the temperature range 1.6–300 K. No evidence of significant charge fluctuations is found from the NQR observables. On the contrary, the low-energy dynamics is dominated by anisotropic spin fluctuations with strong, nearly critical, in-plane character, which are effectively identical to the case of the sister compound PuCoIn 5. Lastly, these findings are discussed within the context of different theoretical proposals for the unconventional pairing mechanism in heavy-fermion superconductors.
- Authors:
-
[2];
[2];
[2];
[2]
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); UCLA, Los Angeles, CA (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22)
- OSTI Identifier:
- 1343707
- Alternate Identifier(s):
- OSTI ID: 1328588; OSTI ID: 1344362
- Report Number(s):
- LA-UR-16-24320; LA-UR-16-24563
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1701546
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 94; Journal Issue: 16; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Koutroulakis, Georgios, Yasuoka, Hiroshi, Tobash, Paul H., Mitchell, Jeremy Neil, Bauer, Eric Dietzgen, and Thompson, Joe David. Extended nuclear quadrupole resonance study of the heavy-fermion superconductor PuCoGa5. United States: N. p., 2016.
Web. doi:10.1103/PhysRevB.94.165115.
Koutroulakis, Georgios, Yasuoka, Hiroshi, Tobash, Paul H., Mitchell, Jeremy Neil, Bauer, Eric Dietzgen, & Thompson, Joe David. Extended nuclear quadrupole resonance study of the heavy-fermion superconductor PuCoGa5. United States. https://doi.org/10.1103/PhysRevB.94.165115
Koutroulakis, Georgios, Yasuoka, Hiroshi, Tobash, Paul H., Mitchell, Jeremy Neil, Bauer, Eric Dietzgen, and Thompson, Joe David. Mon .
"Extended nuclear quadrupole resonance study of the heavy-fermion superconductor PuCoGa5". United States. https://doi.org/10.1103/PhysRevB.94.165115. https://www.osti.gov/servlets/purl/1343707.
@article{osti_1343707,
title = {Extended nuclear quadrupole resonance study of the heavy-fermion superconductor PuCoGa5},
author = {Koutroulakis, Georgios and Yasuoka, Hiroshi and Tobash, Paul H. and Mitchell, Jeremy Neil and Bauer, Eric Dietzgen and Thompson, Joe David},
abstractNote = {PuCoGa5 has emerged as a prototypical heavy-fermion superconductor, with its transition temperature (Tc≃18.5 K) being the highest amongst such materials. Nonetheless, a clear description as to what drives the superconducting pairing is still lacking, rendered complicated by the notoriously intricate nature of plutonium's 5f valence electrons. Here, we present a detailed 69,71Ga nuclear quadrupole resonance (NQR) study of PuCoGa5, concentrating on the system's normal state properties near to Tc and aiming to detect distinct signatures of possible pairing mechanisms. In particular, the quadrupole frequency and spin-lattice relaxation rate were measured for the two crystallographically inequivalent Ga sites and for both Ga isotopes, in the temperature range 1.6–300 K. No evidence of significant charge fluctuations is found from the NQR observables. On the contrary, the low-energy dynamics is dominated by anisotropic spin fluctuations with strong, nearly critical, in-plane character, which are effectively identical to the case of the sister compound PuCoIn5. Lastly, these findings are discussed within the context of different theoretical proposals for the unconventional pairing mechanism in heavy-fermion superconductors.},
doi = {10.1103/PhysRevB.94.165115},
url = {https://www.osti.gov/biblio/1343707},
journal = {Physical Review B},
issn = {2469-9950},
number = 16,
volume = 94,
place = {United States},
year = {2016},
month = {10}
}
Free Publicly Available Full Text
Publisher's Version of Record
Other availability
Search WorldCat to find libraries that may hold this journal
Cited by: 1 work
Citation information provided by
Web of Science
Web of Science
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Spin Susceptibility, Phase Diagram, and Quantum Criticality in the Eelctron-Doped High T c Superconductor Ba(Fe 1- x Co x ) 2 As 2
journal, January 2009
- Ning, Fanlong; Ahilan, Kanagasingham; Imai, Takashi
- Journal of the Physical Society of Japan, Vol. 78, Issue 1
Electronic State of and as Probed by Polarized Neutrons
journal, February 2008
- Hiess, A.; Stunault, A.; Colineau, E.
- Physical Review Letters, Vol. 100, Issue 7
Delocalization and occupancy effects of 5f orbitals in plutonium intermetallics using L3-edge resonant X-ray emission spectroscopy
journal, June 2014
- Booth, C. H.; Medling, S. A.; Jiang, Yu
- Journal of Electron Spectroscopy and Related Phenomena, Vol. 194
Quantum critical state in a magnetic quasicrystal
journal, October 2012
- Deguchi, Kazuhiko; Matsukawa, Shuya; Sato, Noriaki K.
- Nature Materials, Vol. 11, Issue 12
Unconventional superconductivity in PuCoGa5
journal, March 2005
- Curro, N. J.; Caldwell, T.; Bauer, E. D.
- Nature, Vol. 434, Issue 7033
Unconventional Quantum Criticality Due to Critical Valence Transition
journal, June 2014
- Miyake, Kazumasa; Watanabe, Shinji
- Journal of the Physical Society of Japan, Vol. 83, Issue 6
Huge Enhancement of Impurity Scattering due to Critical Valence Fluctuations in a Ce-Based Heavy Electron System
journal, April 2002
- Miyake, Kazumasa; Maebashi, Hideaki
- Journal of the Physical Society of Japan, Vol. 71, Issue 4
New trend of superconductivity in strongly correlated electron systems
journal, March 2007
- Miyake, K.
- Journal of Physics: Condensed Matter, Vol. 19, Issue 12
Tandem Pairing in Heavy-Fermion Superconductors
journal, December 2010
- Flint, Rebecca; Coleman, Piers
- Physical Review Letters, Vol. 105, Issue 24
Tuning of the electronic properties in by actinide (U, Np) and transition-metal (Fe, Rh, Ni) substitutions
journal, September 2005
- Boulet, P.; Colineau, E.; Wastin, F.
- Physical Review B, Vol. 72, Issue 10
The Effect of Electron-Electron Interaction on the Nuclear Spin Relaxation in Metals
journal, April 1963
- Moriya, Tôru
- Journal of the Physical Society of Japan, Vol. 18, Issue 4
Anisotropic Spin Fluctuations and Superconductivity in “115” Heavy Fermion Compounds: NMR Study in
journal, November 2010
- Baek, S. -H.; Sakai, H.; Bauer, E. D.
- Physical Review Letters, Vol. 105, Issue 21
The valence-fluctuating ground state of plutonium
journal, July 2015
- Janoschek, Marc; Das, Pinaki; Chakrabarti, Bismayan
- Science Advances, Vol. 1, Issue 6
Relaxation Anomalies of 69/71 Ga NQR in the Paramagnetic State of the Itinerant Antiferromagnet UGa 3 : Possible Evidence for a Crossover to Localized Spin Fluctuations and Development of Orbital Fluctuations of 5 f -electrons at High Temperatures
journal, February 2004
- Takagi, Shigeru; Muraoka, Hideaki; D. Matsuda, Tatsuma
- Journal of the Physical Society of Japan, Vol. 73, Issue 2
Magnetism, superconductivity, and pairing symmetry in iron-based superconductors
journal, October 2008
- Chubukov, A. V.; Efremov, D. V.; Eremin, I.
- Physical Review B, Vol. 78, Issue 13
Localized 5f electrons in superconducting PuCoIn 5 : consequences for superconductivity in PuCoGa 5
journal, December 2011
- Bauer, E. D.; Altarawneh, M. M.; Tobash, P. H.
- Journal of Physics: Condensed Matter, Vol. 24, Issue 5
Nuclear spin-lattice relaxation rate in : A two-component spin-fermion model
journal, August 2006
- Bang, Yunkyu; Graf, M. J.; Curro, N. J.
- Physical Review B, Vol. 74, Issue 5
Advances in the preparation and characterization of transuranium systems
journal, July 2003
- Wastin, F.; Boulet, P.; Rebizant, J.
- Journal of Physics: Condensed Matter, Vol. 15, Issue 28
Heavy-Electron Metals: New Highly Correlated States of Matter
journal, January 1988
- Fisk, Z.; Hess, D. W.; Pethick, C. J.
- Science, Vol. 239, Issue 4835
Single crystal growth of plutonium compounds from molten metal fluxes
journal, July 2012
- Bauer, Eric D.; Tobash, Paul H.; Mitchell, Jeremy N.
- Philosophical Magazine, Vol. 92, Issue 19-21
Microscopic properties of the heavy-fermion superconductor PuCoIn 5 explored by nuclear quadrupole resonance
journal, May 2014
- Koutroulakis, G.; Yasuoka, H.; Chudo, H.
- New Journal of Physics, Vol. 16, Issue 5
Composite pairing in a mixed-valent two-channel Anderson model
journal, August 2011
- Flint, Rebecca; Nevidomskyy, Andriy H.; Coleman, Piers
- Physical Review B, Vol. 84, Issue 6
Anisotropic Superconducting Gap in Transuranium Superconductor PuRhGa 5 : Ga NQR Study on a Single Crystal
journal, June 2005
- Sakai, Hironori; Tokunaga, Yo; Fujimoto, Tatsuya
- Journal of the Physical Society of Japan, Vol. 74, Issue 6
Observation of Two Distinct Superconducting Phases in CeCu2Si2
journal, December 2003
- Yuan, H. Q.
- Science, Vol. 302, Issue 5653
Magnetically mediated superconductivity in heavy fermion compounds
journal, July 1998
- Mathur, N. D.; Grosche, F. M.; Julian, S. R.
- Nature, Vol. 394, Issue 6688
Cu and O NMR studies of the magnetic properties of ( =62 K)
journal, January 1991
- Takigawa, M.; Reyes, A. P.; Hammel, P. C.
- Physical Review B, Vol. 43, Issue 1
Plutonium-Based Heavy-Fermion Systems
journal, March 2015
- Bauer, E. D.; Thompson, J. D.
- Annual Review of Condensed Matter Physics, Vol. 6, Issue 1
Favorable magnetic fluctuation anisotropy for unconventional superconductivity in -electron systems
journal, April 2007
- Kambe, S.; Sakai, H.; Tokunaga, Y.
- Physical Review B, Vol. 75, Issue 14
Avoided valence transition in a plutonium superconductor
journal, March 2015
- Ramshaw, B. J.; Shekhter, Arkady; McDonald, Ross D.
- Proceedings of the National Academy of Sciences, Vol. 112, Issue 11
Temperature dependence of the electric field gradient in noncubic metals
journal, June 1976
- Christiansen, J.; Heubes, P.; Keitel, R.
- Zeitschrift f�r Physik B Condensed Matter and Quanta, Vol. 24, Issue 2
Unconventional superconductivity in
journal, May 2006
- Curro, N. J.; Caldwell, T.; Bauer, E. D.
- Physica B: Condensed Matter, Vol. 378-380
Heavy electrons and the symplectic symmetry of spin
journal, July 2008
- Flint, Rebecca; Dzero, M.; Coleman, P.
- Nature Physics, Vol. 4, Issue 8
NMR studies of the normal and superconducting states of the organic superconductor κ-(ET Cu[N(CN ]Br
journal, October 1995
- De Soto, S. M.; Slichter, C. P.; Kini, A. M.
- Physical Review B, Vol. 52, Issue 14
: Spin Fluctuations in the Vicinity of a Quantum Critical Point at Low Magnetic Field
journal, August 2002
- Ishida, K.; Okamoto, K.; Kawasaki, Y.
- Physical Review Letters, Vol. 89, Issue 10
Structural Tuning of Unconventional Superconductivity in ( )
journal, September 2004
- Bauer, E. D.; Thompson, J. D.; Sarrao, J. L.
- Physical Review Letters, Vol. 93, Issue 14
Works referencing / citing this record:
Tuning Nuclear Quadrupole Resonance: A Novel Approach for the Design of Frequency-Selective MRI Contrast Agents
journal, June 2018
- Gösweiner, Christian; Lantto, Perttu; Fischer, Roland
- Physical Review X, Vol. 8, Issue 2
Tuning Nuclear Quadrupole Resonance: A Novel Approach for the Design of Frequency-Selective MRI Contrast Agents
journal, June 2018
- Gösweiner, Christian; Lantto, Perttu; Fischer, Roland
- Physical Review X, Vol. 8, Issue 2
Probing Magnetism in the Vortex Phase of by X-Ray Magnetic Circular Dichroism
journal, October 2017
- Magnani, N.; Eloirdi, R.; Wilhelm, F.
- Physical Review Letters, Vol. 119, Issue 15