skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Nanoscale heterogeneity induced by nonmagnetic Zn dopants in the quantum critical metal CeCoIn5: 115In NQR/NMR and 59Co NMR study

Journal Article · · Physical Review. B

We report antiferromagnetism in a prototypical quantum critical metal CeCoIn5 is known to be induced by slight substitutions of nonmagnetic Zn atoms for In. In nominally 7% Zn-substituted CeCoIn5, an antiferromagnetic (AFM) state coexists with heavy fermion superconductivity. Heterogeneity of the electronic states is investigated in Zn-doped CeCoIn5 by means of nuclear quadrupole and magnetic resonances (NQR and NMR). Site-dependent NQR relaxation rates 1/T1 indicate that the AFM state is locally nucleated around Zn substituents in the matrix of a heavy fermion state, and percolates through the bulk at the AFM transition temperature TN. At lower temperatures, an anisotropic superconducting (SC) gap below the SC transition temperature Tc, and the SC state permeates through the AFM regions via a SC proximity effect. Applying an external magnetic field induces a spin-flop transition near 5T, reducing the volume of the AFM regions. Consequently, a short-ranged inhomogeneous AFM state survives and coexists with a paramagnetic Fermi liquid state at high fields.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF); Japan Society for the Promotion of Science (JSPS); Japan Atomic Energy Agency (JAEA)
Grant/Contract Number:
89233218CNA000001; DMR-1644779; JP16KK0106; JP17K05522; JP17K05529; JP20K03852
OSTI ID:
1884757
Report Number(s):
LA-UR-21-23885; TRN: US2308111
Journal Information:
Physical Review. B, Vol. 104, Issue 8; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (45)

Generalized Gradient Approximation Made Simple journal October 1996
Comparison of the crystal structure of the heavy-fermion materials CeCoIn 5 , CeRhIn 5 and CeIrIn 5 journal December 2002
Non-Fermi-liquid behavior in d - and f -electron metals journal October 2001
Transport and Thermal Properties of Heavy-Fermion Superconductors: A Unified Picture journal November 1986
Electronic Tuning and Uniform Superconductivity in CeCoIn 5 journal October 2012
Microscopic investigation of electronic inhomogeneity induced by substitutions in a quantum critical metal CeCoIn 5 journal September 2015
The Effect of Electron-Electron Interaction on the Nuclear Spin Relaxation in Metals journal April 1963
Perturbing the Superconducting Planes in CeCoIn5 by Sn Substitution journal July 2005
The antiferromagnet/superconductor proximity effect in Cr/V/Cr trilayers journal September 2002
NQR study in CeIn3 journal January 1999
Disorder in quantum critical superconductors journal December 2013
Magnetic spin-lattice relaxation in nuclear quadrupole resonance: the eta not=0 case journal October 1991
Coupled Superconducting and Magnetic Order in CeCoIn5 journal September 2008
Fermi-liquid instabilities at magnetic quantum phase transitions journal August 2007
Magnetic-Field-Induced Enhancements of Nuclear Spin-Lattice Relaxation Rates in the Heavy-Fermion Superconductor CeCoIn 5 Using Co 59 Nuclear Magnetic Resonance journal September 2011
Evidence for spiral magnetic order in the heavy fermion material CeRhIn 5 journal September 2000
Anisotropic Spin Fluctuations in Heavy-Fermion Superconductor CeCoIn 5 : In-NQR and Co-NMR Studies journal September 2003
Magnetic structure of the compound CeIn3 journal May 1980
Impurity Effects in Cuprate Superconductors journal January 1993
Impurity Effect in High-TcSuperconductors –A Consistent Analysis byd-Wave Superconducting Model– journal June 1994
Reversible Tuning of the Heavy-Fermion Ground State in CeCoIn 5 journal August 2006
Interacting Antiferromagnetic Droplets in Quantum Critical CeCoIn 5 journal October 2007
Field Dependent Coherence Length in the Superclean, High- κ Superconductor CeCoIn 5 journal September 2006
Reemergent Superconductivity and Avoided Quantum Criticality in Cd-Doped CeIrIn 5 under Pressure journal April 2015
Disorder-driven non-Fermi liquid behaviour of correlated electrons journal August 2005
Pauli-limited superconductivity and antiferromagnetism in the heavy-fermion compoundCeCo(In1xZnx)5 journal November 2015
NMR and NQR studies of the heavy fermion superconductors Ce T In 5 ( T = Co and Ir) journal September 2001
Possible Evolution of Antiferromagnetism in Zn-Doped Heavy-Fermion Superconductor CeCoIn 5 journal March 2014
Magnetism and superconductivity driven by identical 4f states in a heavy-fermion metal journal May 2010
Local structure and site occupancy of Cd and Hg substitutions in Ce T In 5 ( T = Co , Rh, and Ir) journal April 2009
Low temperature magnetic structure of CeRhIn 5 by neutron diffraction on absorption-optimized samples journal March 2017
Antiferromagnetic quantum critical point in journal May 2006
Evidence for Coexistence of Bulk Superconductivity and Itinerant Antiferromagnetism in the Heavy Fermion System CeCo(In1−xCdx)5 journal July 2015
Magnetic Criticality and Unconventional Superconductivity in CeCoIn5: Study of115In-Nuclear Quadrupole Resonance under Pressure journal August 2004
Probing the electronic structure of pure and doped Ce M In 5 ( M = Co , Rh , Ir ) crystals with nuclear quadrupolar resonance journal June 2008
Observation of a new field-induced phase transition and its concomitant quantum critical fluctuations in CeCo(In1xZnx)5 journal June 2017
Local moments in the heterogeneous electronic state of Cd-substituted CeCoIn5: NQR relaxation rates journal April 2017
Evolution of ground-state wave function in CeCoIn 5 upon Cd or Sn doping journal January 2018
Impurity-induced magnetic droplet in unconventional superconductors near a magnetic instability: Application to Nd-doped CeCoIn 5 journal December 2017
Rapid suppression of superconductivity in journal April 2005
Magnetic ordering in the presence of fast spin fluctuations: A neutron scattering study of Ce In 3 journal November 1980
Thermodynamic and transport investigation of Ce Co In 5 x Sn x journal June 2006
Magnetic structure of Cd-doped Ce Co In 5 journal August 2007
In Situ STM Observation of Nonmagnetic Impurity Effect in MBE-grown CeCoIn 5 Films journal March 2018
Heavy-fermion superconductivity in CeCoIn 5 at 2.3 K journal April 2001