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

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

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

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

Abstract

Electric resistivity, specific heat, magnetic susceptibility, and inelastic neutron scattering experiments were performed on a single crystal of the heavy fermion compound Ce(Ni_0.935Pd_0.065)₂Ge₂ in order to research 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. In addition, 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. In conclusion, we suggest that these deviations from the divergent behavior expected for a QCP may result from alloy disorder.

Authors:

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

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); University 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)
University 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); Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab)
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)

Publication Date:: Wed Dec 03 00:00:00 EST 2014

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1302910

Grant/Contract Number:: AC05-00OR22725; FG02-03ER46036; DMR-0944772

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Physics. Condensed Matter

Additional Journal Information:: Journal Volume: 27; Journal Issue: 1; Journal ID: ISSN 0953-8984

Publisher:: IOP Publishing

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; antiferromagnetic quantum critical point; non-Fermi liquid; Kondo disorder; heavy fermion; correlation length; correlation time

Citation Formats


                    Wang, C. H., Poudel, L., Taylor, Alice E., Lawrence, J M., Christianson, Andrew D., Chang, S., Rodriguez-Rivera, J. A., Lynn, J. W., Podlesnyak, Andrey A., Ehlers, G., Baumbach, R. E., Bauer, E. D., Gofryk, Krzysztof, Ronning, F., Mcclellan, K. J., and Thompson, J. D. Quantum critical fluctuations in the heavy fermion compound Ce(Ni0.935Pd0.065)2Ge2.  United States: N. p., 2014. 
Web.  doi:10.1088/0953-8984/27/1/015602.

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                    Wang, C. H., Poudel, L., Taylor, Alice E., Lawrence, J M., Christianson, Andrew D., Chang, S., Rodriguez-Rivera, J. A., Lynn, J. W., Podlesnyak, Andrey A., Ehlers, G., Baumbach, R. E., Bauer, E. D., Gofryk, Krzysztof, Ronning, F., Mcclellan, K. J., & Thompson, J. D. Quantum critical fluctuations in the heavy fermion compound Ce(Ni0.935Pd0.065)2Ge2.  United States.  https://doi.org/10.1088/0953-8984/27/1/015602

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                    Wang, C. H., Poudel, L., Taylor, Alice E., Lawrence, J M., Christianson, Andrew D., Chang, S., Rodriguez-Rivera, J. A., Lynn, J. W., Podlesnyak, Andrey A., Ehlers, G., Baumbach, R. E., Bauer, E. D., Gofryk, Krzysztof, Ronning, F., Mcclellan, K. J., and Thompson, J. D. Wed .  
"Quantum critical fluctuations in the heavy fermion compound Ce(Ni0.935Pd0.065)2Ge2".  United States.  https://doi.org/10.1088/0953-8984/27/1/015602.  https://www.osti.gov/servlets/purl/1302910.

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@article{osti_1302910,

  title        = {Quantum critical fluctuations in the heavy fermion compound Ce(Ni0.935Pd0.065)2Ge2},

  author       = {Wang, C. H. and Poudel, L. and Taylor, Alice E. and Lawrence, J M. and Christianson, Andrew D. and Chang, S. and Rodriguez-Rivera, J. A. and Lynn, J. W. and Podlesnyak, Andrey A. and Ehlers, G. and Baumbach, R. E. and Bauer, E. D. and Gofryk, Krzysztof and Ronning, F. and Mcclellan, K. J. and Thompson, J. D.},

  abstractNote = {Electric resistivity, specific heat, magnetic susceptibility, and inelastic neutron scattering experiments were performed on a single crystal of the heavy fermion compound Ce(Ni0.935Pd0.065)2Ge2 in order to research 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) ~ T3/2 and γ(T) ~ γ0 - bT1/2). However, for 2 ≤ T ≤ 10 K, the susceptibility and specific heat vary as log T and the resistivity varies linearly with temperature. In addition, 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. In conclusion, we suggest that these deviations from the divergent behavior expected for a QCP may result from alloy disorder.},

  doi          = {10.1088/0953-8984/27/1/015602},

  journal      = {Journal of Physics. Condensed Matter},

  number       = 1,

  volume       = 27,

  place        = {United States},

  year         = {Wed Dec 03 00:00:00 EST 2014},

  month        = {Wed Dec 03 00:00:00 EST 2014}

}

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Works referencing / citing this record:

Multicomponent fluctuation spectrum at the quantum critical point in CeCu6−xAgx
journal, October 2019

Poudel, Lekh; Lawrence, Jon M.; Wu, Liusuo S.
npj Quantum Materials, Vol. 4, Issue 1
DOI: 10.1038/s41535-019-0191-y

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

Abstract

Citation Formats

Fermi-liquid instabilities at magnetic quantum phase transitions journal, August 2007

Quantum critical phenomena journal, August 1976

Effect of a nonzero temperature on quantum critical points in itinerant fermion systems journal, September 1993

Anomalous Properties around Magnetic Instability in Heavy Electron Systems journal, March 1995

Non-Fermi-liquid behavior in d - and f -electron metals journal, October 2001

Quantum Critical Point of an Itinerant Antiferromagnet in a Heavy Fermion journal, January 2006

Antiferromagnetic criticality at a heavy-fermion quantum phase transition journal, September 2009

Crossover to Fermi-Liquid Behavior at Lowest Temperatures in Pure CeNi2Ge2 journal, January 2000

Specific heat, resistivity and neutron scattering studies in the Kondo lattice CeNi2Ge2 journal, October 1988

Spin fluctuations and non-Fermi-liquid behavior of CeNi 2 Ge 2 journal, October 2003

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 journal, May 1999

Specific heat of CeNi2Ge2 in wide-range of temperatures journal, May 2004

The new cold neutron chopper spectrometer at the Spallation Neutron Source: Design and performance journal, August 2011

MACS—a new high intensity cold neutron spectrometer at NIST journal, January 2008

Magnetic Structure of Ce(Ni 1- x Pd x ) 2 Ge 2 Proximate to the Magnetic Instability journal, May 2002

Ground state of a quantum critical system: Neutron scattering on Ce ( Ru 1 − x Fe x ) 2 Ge 2 journal, August 2007

Spin Fluctuations in Normal State CeCu 2 Si 2 on Approaching the Quantum Critical Point journal, June 2011

Disorder-Driven Non-Fermi-Liquid Behavior in Kondo Alloys journal, January 1997

Comparison of CeR h 2 S i 2 and CeRh 2 − x Ru x Si 2 near their Magnetic-Nonmagnetic Boundaries journal, May 1997

Pd/Cu Site Interchange and Non-Fermi-Liquid Behavior in UCu 4 Pd journal, November 1998

Non-Fermi-liquid behavior in U and Ce alloys: Criticality, disorder, dissipation, and Griffiths-McCoy singularities journal, December 2000

Specific heat, resistivity and neutron scattering studies in the Kondo lattice CeNi2Ge2 journal, October 1988

Multicomponent fluctuation spectrum at the quantum critical point in CeCu6−xAgx journal, October 2019

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

Fermi-liquid instabilities at magnetic quantum phase transitions
journal, August 2007

Quantum critical phenomena
journal, August 1976

Effect of a nonzero temperature on quantum critical points in itinerant fermion systems
journal, September 1993

Anomalous Properties around Magnetic Instability in Heavy Electron Systems
journal, March 1995

Non-Fermi-liquid behavior in $d$ - and $f$ -electron metals
journal, October 2001

Quantum Critical Point of an Itinerant Antiferromagnet in a Heavy Fermion
journal, January 2006

Antiferromagnetic criticality at a heavy-fermion quantum phase transition
journal, September 2009

Crossover to Fermi-Liquid Behavior at Lowest Temperatures in Pure CeNi2Ge2
journal, January 2000

Specific heat, resistivity and neutron scattering studies in the Kondo lattice CeNi2Ge2
journal, October 1988

Spin fluctuations and non-Fermi-liquid behavior of ${CeNi}_{2} {Ge}_{2}$
journal, October 2003

Magnetic, calorimetric, and transport properties of ${C e (P d}_{1 - x} {Ni}_{x})_{2} {Ge}_{2}$ and ${CeNi}_{2} {(G e}_{1 - y} {Si}_{y})_{2}$
journal, May 1999

Specific heat of CeNi2Ge2 in wide-range of temperatures
journal, May 2004

The new cold neutron chopper spectrometer at the Spallation Neutron Source: Design and performance
journal, August 2011

MACS—a new high intensity cold neutron spectrometer at NIST
journal, January 2008

Magnetic Structure of Ce(Ni _{1- x} Pd _x ) ₂ Ge ₂ Proximate to the Magnetic Instability
journal, May 2002

Ground state of a quantum critical system: Neutron scattering on $Ce {({Ru}_{1 - x} {Fe}_{x})}_{2} {Ge}_{2}$
journal, August 2007

Spin Fluctuations in Normal State ${CeCu}_{2} {Si}_{2}$ on Approaching the Quantum Critical Point
journal, June 2011

Disorder-Driven Non-Fermi-Liquid Behavior in Kondo Alloys
journal, January 1997

Comparison of CeR $h_{2}$ S $i_{2}$ and ${CeRh}_{2 - x} {Ru}_{x} {Si}_{2}$ near their Magnetic-Nonmagnetic Boundaries
journal, May 1997

Pd/Cu Site Interchange and Non-Fermi-Liquid Behavior in ${UCu}_{4} Pd$
journal, November 1998

Non-Fermi-liquid behavior in U and Ce alloys: Criticality, disorder, dissipation, and Griffiths-McCoy singularities
journal, December 2000

Specific heat, resistivity and neutron scattering studies in the Kondo lattice CeNi2Ge2
journal, October 1988

Multicomponent fluctuation spectrum at the quantum critical point in CeCu6−xAgx
journal, October 2019