Quantum critical fluctuations in the heavy fermion compound Ce(Ni0.935 Pd0.065)2Ge2

Wang, C. H.; Poudel, L.; Taylor, A. E.; Lawrence, J. M.; Christianson, A. D.; Chang, S.; Rodriguez-Rivera, J. A.; Lynn, J. W.; Podlesnyak, A. A.; Ehlers, G.; Baumbach, R. E.; Bauer, E. D.; Gofryk, K.; Ronning, F.; McClellan, K. J.; Thompson, J. D.

doi:10.1088/0953-8984/27/1/015602

Quantum critical fluctuations in the heavy fermion compound Ce(Ni_0.935 Pd_0.065)₂Ge₂

Journal Article · Wed Jan 14 04:00:00 EST 2015 · Journal of Physics. Condensed Matter

DOI:https://doi.org/10.1088/0953-8984/27/1/015602· OSTI ID:1177660

Wang, C. H. ^[1]; Poudel, L. ^[2]; Taylor, A. E. ^[3]; Lawrence, J. M. ^[4]; Christianson, A. D. ^[2]; Chang, S. ^[5]; Rodriguez-Rivera, J. A. ^[6]; Lynn, J. W. ^[5]; Podlesnyak, A. A. ^[3]; Ehlers, G. ^[3]; Baumbach, R. E. ^[7]; Bauer, E. D. ^[8]; Gofryk, K. ^[9]; Ronning, F. ^[8]; McClellan, K. J. ^[8]; Thompson, J. D. ^[8]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of California, Irvine, CA (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Univ. of California, Irvine, CA (United States)
National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States); Univ. of Maryland, College Park, MD (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); National High Magnetic Field Lab., Tallahassee, FL (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Idaho National Lab. (INL), Idaho Falls, ID (United States)

Electric resistivity, specific heat, magnetic susceptibility, and inelastic neutron scattering experi- ments were performed on a single crystal of the heavy fermion compound Ce(Ni_0.935 Pd_0.065)₂Ge₂ in order to study the spin fluctuations near an antiferromagnetic (AF) quantum critical point (QCP). The resistivity and the specific heat coefficient for T ≤ 1 K exhibit the power law behavior expected for a 3D itinerant AF QCP (ρ(T) ~ T^3/2 and γ(T) ~ γ₀ - bT^1/2). However, for 2 ≤ T ≤ 10 K, the susceptibility and specific heat vary as log T and the resistivity varies linearly with temperature. Furthermore, despite the fact that the resistivity and specific heat exhibit the non-Fermi liquid behavior expected at a QCP, the correlation length, correlation time, and staggered susceptibility of the spin fluctuations remain finite at low temperature. We suggest that these deviations from the divergent behavior expected for a QCP may result from alloy disorder.

Research Organization:: Idaho National Laboratory (INL), Idaho Falls, ID (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: FG02-03ER46036

OSTI ID:: 1177660

Journal Information:: Journal of Physics. Condensed Matter, Journal Name: Journal of Physics. Condensed Matter Journal Issue: 1 Vol. 27; ISSN 0953-8984

Publisher:: IOP Publishing

Country of Publication:: United States

Language:: English

References (21)

Non-Fermi-liquid behavior in d - and f -electron metals Stewart, G. R. Reviews of Modern Physics, Vol. 73, Issue 4 https://doi.org/10.1103/RevModPhys.73.797	journal	October 2001
Antiferromagnetic criticality at a heavy-fermion quantum phase transition Knafo, W.; Raymond, S.; Lejay, P. Nature Physics, Vol. 5, Issue 10 https://doi.org/10.1038/nphys1374	journal	September 2009
Spin Fluctuations in Normal State CeCu 2 Si 2 on Approaching the Quantum Critical Point Arndt, Julia; Stockert, Oliver; Schmalzl, Karin Physical Review Letters, Vol. 106, Issue 24 https://doi.org/10.1103/PhysRevLett.106.246401	journal	June 2011
Pd/Cu Site Interchange and Non-Fermi-Liquid Behavior in UCu 4 Pd Booth, C. H.; MacLaughlin, D. E.; Heffner, R. H. Physical Review Letters, Vol. 81, Issue 18 https://doi.org/10.1103/PhysRevLett.81.3960	journal	November 1998
Spin fluctuations and non-Fermi-liquid behavior of CeNi 2 Ge 2 Kadowaki, H.; Fåk, B.; Fukuhara, T. Physical Review B, Vol. 68, Issue 14 https://doi.org/10.1103/PhysRevB.68.140402	journal	October 2003
Specific heat, resistivity and neutron scattering studies in the Kondo lattice CeNi2Ge2 Knopp, G.; Loidl, A.; Caspary, R. Journal of Magnetism and Magnetic Materials, Vol. 74, Issue 3 https://doi.org/10.1016/0304-8853(88)90209-0	journal	October 1988
Disorder-Driven Non-Fermi-Liquid Behavior in Kondo Alloys Miranda, E.; Dobrosavljević, V.; Kotliar, G. Physical Review Letters, Vol. 78, Issue 2 https://doi.org/10.1103/PhysRevLett.78.290	journal	January 1997
MACS—a new high intensity cold neutron spectrometer at NIST Rodriguez, J. A.; Adler, D. M.; Brand, P. C. Measurement Science and Technology, Vol. 19, Issue 3 https://doi.org/10.1088/0957-0233/19/3/034023	journal	January 2008
Ground state of a quantum critical system: Neutron scattering on Ce ( Ru 1 − x Fe x ) 2 Ge 2 Montfrooij, Wouter; Lamsal, Jagat; Aronson, Meigan Physical Review B, Vol. 76, Issue 5 https://doi.org/10.1103/PhysRevB.76.052404	journal	August 2007
Comparison of CeR h 2 S i 2 and CeRh 2 − x Ru x Si 2 near their Magnetic-Nonmagnetic Boundaries Graf, T.; Thompson, J. D.; Hundley, M. F. Physical Review Letters, Vol. 78, Issue 19 https://doi.org/10.1103/PhysRevLett.78.3769	journal	May 1997
Non-Fermi-liquid behavior in U and Ce alloys: Criticality, disorder, dissipation, and Griffiths-McCoy singularities Castro Neto, A. H.; Jones, B. A. Physical Review B, Vol. 62, Issue 22 https://doi.org/10.1103/PhysRevB.62.14975	journal	December 2000
Quantum critical phenomena Hertz, John A. Physical Review B, Vol. 14, Issue 3 https://doi.org/10.1103/PhysRevB.14.1165	journal	August 1976
Fermi-liquid instabilities at magnetic quantum phase transitions Löhneysen, Hilbert v.; Rosch, Achim; Vojta, Matthias Reviews of Modern Physics, Vol. 79, Issue 3 https://doi.org/10.1103/RevModPhys.79.1015	journal	August 2007
The new cold neutron chopper spectrometer at the Spallation Neutron Source: Design and performance Ehlers, G.; Podlesnyak, A. A.; Niedziela, J. L. Review of Scientific Instruments, Vol. 82, Issue 8 https://doi.org/10.1063/1.3626935	journal	August 2011
Effect of a nonzero temperature on quantum critical points in itinerant fermion systems Millis, A. J. Physical Review B, Vol. 48, Issue 10 https://doi.org/10.1103/PhysRevB.48.7183	journal	September 1993
Specific heat of CeNi2Ge2 in wide-range of temperatures Kuwai, T.; Takeuchi, M.; Tsuchiya, T. Journal of Magnetism and Magnetic Materials, Vol. 272-276 https://doi.org/10.1016/j.jmmm.2003.11.061	journal	May 2004
Magnetic, calorimetric, and transport properties of C e ( P d 1 − x Ni x ) 2 Ge 2 and CeNi 2 ( G e 1 − y Si y ) 2 Knebel, G.; Brando, M.; Hemberger, J. Physical Review B, Vol. 59, Issue 19 https://doi.org/10.1103/PhysRevB.59.12390	journal	May 1999
Quantum Critical Point of an Itinerant Antiferromagnet in a Heavy Fermion Kadowaki, Hiroaki; Tabata, Yoshikazu; Sato, Masugu Physical Review Letters, Vol. 96, Issue 1 https://doi.org/10.1103/PhysRevLett.96.016401	journal	January 2006
Crossover to Fermi-Liquid Behavior at Lowest Temperatures in Pure CeNi2Ge2 Koerner, S.; Scheidt, E. -W.; Schreiner, T. Journal of Low Temperature Physics, Vol. 119, Issue 1/2, p. 147-153 https://doi.org/10.1023/A:1004616704032	journal	January 2000
Anomalous Properties around Magnetic Instability in Heavy Electron Systems Moriya, Tôru; Takimoto, Tetsuya Journal of the Physical Society of Japan, Vol. 64, Issue 3 https://doi.org/10.1143/JPSJ.64.960	journal	March 1995
Magnetic Structure of Ce(Ni _{1- x} Pd _x ) ₂ Ge ₂ Proximate to the Magnetic Instability Fukuhara, Tadashi; Kadowaki, Hiroaki; Aso, Naofumi Journal of the Physical Society of Japan, Vol. 71, Issue 5 https://doi.org/10.1143/JPSJ.71.1360	journal	May 2002

Cited By (1)

Multicomponent fluctuation spectrum at the quantum critical point in CeCu6−xAgx Poudel, Lekh; Lawrence, Jon M.; Wu, Liusuo S. npj Quantum Materials, Vol. 4, Issue 1 https://doi.org/10.1038/s41535-019-0191-y	journal	October 2019

Similar Records

Quantum critical fluctuations in the heavy fermion compound Ce(Ni_0.935Pd_0.065)₂Ge₂

Journal Article · Tue Dec 02 19:00:00 EST 2014 · Journal of Physics. Condensed Matter · OSTI ID:1302910

Inelastic neutron scattering in valence fluctuation compounds

Technical Report · Mon Feb 14 23:00:00 EST 2011 · OSTI ID:1005014

Quantum Critical Behavior in the Heavy Fermion Single Crystal Ce(Ni0.935Pd0.065)2Ge2

Conference · Fri Dec 31 23:00:00 EST 2010 · OSTI ID:1010991

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
ANTIFERROMAGNETISM
CERIUM
ELECTRIC CONDUCTIVITY
FERMI GAS
FERMIONS
FLUCTUATIONS
Fermi Liquid
INELASTIC SCATTERING
MAGNETIC SUSCEPTIBILITY
MONOCRYSTALS
Neutron Scattering
Phase Transformation
SPECIFIC HEAT
SPIN
STRONG ELECTRONIC CORRELATIONS
Temperature Range 0000-0013 K