Remarkably robust and correlated coherence and antiferromagnetism in (Ce1-xLax)Cu2Ge2

Hodovanets, H.; Bud’ko, S. L.; Straszheim, W. E.; Taufour, V.; Mun, E. D.; Kim, H.; Flint, R.; Canfield, P. C.

doi:10.1103/PhysRevLett.114.236601

Title: Remarkably robust and correlated coherence and antiferromagnetism in (Ce_1-xLa_x)Cu₂Ge₂

Abstract

We present magnetic susceptibility, resistivity, specific heat, and thermoelectric power measurements on (Ce_1-xLa_x)Cu₂Ge₂ single crystals (0 ≤ x ≤ 1). With La-substitution, the antiferromagnetic temperature T_N is suppressed in an almost linear fashion and moves below 0.36 K, the base temperature of our measurements for x > 0.8. Surprisingly, in addition to robust antiferromagnetism, the system also shows low temperature coherent scattering below T_coh up to ~0.9 of La, indicating a small percolation limit ~9% of Ce. T_coh as a function of magnetic field was found to have different behavior for x < 0.9 and x > 0.9. Remarkably, (T_coh)² at H = 0 was found to be linearly proportional to T_N. In conclusion, the jump in the magnetic specific heat δC_m at T_N as a function of T_K/T_N for (Ce_1-xLa_x)Cu₂Ge₂ follows the theoretical prediction based on the molecular field calculation for the S = 1/2 resonant level model.

Authors:

Hodovanets, H. ^[1]; Bud’ko, S. L. ^[1]; Straszheim, W. E. ^[1]; Taufour, V. ^[1]; Mun, E. D. ^[1]; Kim, H. ^[1]; Flint, R. ^[1]; Canfield, P. C. ^[1]

Iowa State Univ., Ames, IA (United States)

Publication Date:: Mon Jun 08 00:00:00 EDT 2015

Research Org.:: Ames Laboratory (AMES), Ames, IA (United States)

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

OSTI Identifier:: 1227369

Alternate Identifier(s):: OSTI ID: 1184053

Report Number(s):: IS-J-8644
Journal ID: ISSN 0031-9007; PRLTAO

Grant/Contract Number:: AC02-07CH11358; FA9550-09-1-0603

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Volume: 114; Journal Issue: 23; Journal ID: ISSN 0031-9007

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Hodovanets, H., Bud’ko, S. L., Straszheim, W. E., Taufour, V., Mun, E. D., Kim, H., Flint, R., and Canfield, P. C. Remarkably robust and correlated coherence and antiferromagnetism in (Ce1-xLax)Cu2Ge2.  United States: N. p., 2015. 
Web.  doi:10.1103/PhysRevLett.114.236601.

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                    Hodovanets, H., Bud’ko, S. L., Straszheim, W. E., Taufour, V., Mun, E. D., Kim, H., Flint, R., & Canfield, P. C. Remarkably robust and correlated coherence and antiferromagnetism in (Ce1-xLax)Cu2Ge2.  United States.  https://doi.org/10.1103/PhysRevLett.114.236601

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                    Hodovanets, H., Bud’ko, S. L., Straszheim, W. E., Taufour, V., Mun, E. D., Kim, H., Flint, R., and Canfield, P. C. Mon .  
"Remarkably robust and correlated coherence and antiferromagnetism in (Ce1-xLax)Cu2Ge2".  United States.  https://doi.org/10.1103/PhysRevLett.114.236601.  https://www.osti.gov/servlets/purl/1227369.

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@article{osti_1227369,

  title        = {Remarkably robust and correlated coherence and antiferromagnetism in (Ce1-xLax)Cu2Ge2},

  author       = {Hodovanets, H. and Bud’ko, S. L. and Straszheim, W. E. and Taufour, V. and Mun, E. D. and Kim, H. and Flint, R. and Canfield, P. C.},

  abstractNote = {We present magnetic susceptibility, resistivity, specific heat, and thermoelectric power measurements on (Ce1-xLax)Cu2Ge2 single crystals (0 ≤ x ≤ 1). With La-substitution, the antiferromagnetic temperature TN is suppressed in an almost linear fashion and moves below 0.36 K, the base temperature of our measurements for x > 0.8. Surprisingly, in addition to robust antiferromagnetism, the system also shows low temperature coherent scattering below Tcoh up to ~0.9 of La, indicating a small percolation limit ~9% of Ce. Tcoh as a function of magnetic field was found to have different behavior for x < 0.9 and x > 0.9. Remarkably, (Tcoh)2 at H = 0 was found to be linearly proportional to TN. In conclusion, the jump in the magnetic specific heat δCm at TN as a function of TK/TN for (Ce1-xLax)Cu2Ge2 follows the theoretical prediction based on the molecular field calculation for the S = 1/2 resonant level model.},

  doi          = {10.1103/PhysRevLett.114.236601},

  journal      = {Physical Review Letters},

  number       = 23,

  volume       = 114,

  place        = {United States},

  year         = {Mon Jun 08 00:00:00 EDT 2015},

  month        = {Mon Jun 08 00:00:00 EDT 2015}

}

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Works referencing / citing this record:

Breakdown of coherence in Kondo alloys: crucial role of concentration versus band filling
journal, July 2019

Burdin, Sébastien; Lacroix, Claudine
Journal of Physics: Condensed Matter, Vol. 31, Issue 39
DOI: 10.1088/1361-648x/ab2701

Emergent Coherent Lattice Behavior in Kondo Nanosystems
text, January 2018

Raczkowski, Marcin; Assaad, Fakher F.
arXiv
DOI: 10.48550/arxiv.1809.00930

Breakdown of coherence in Kondo alloys: crucial role of concentration vs band filling
text, January 2018

Burdin, Sébastien; Lacroix, Claudine
arXiv
DOI: 10.48550/arxiv.1810.05383

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Title: Remarkably robust and correlated coherence and antiferromagnetism in (Ce1-xLax)Cu2Ge2

Abstract

Citation Formats

Disorder and coherence in heavy-fermion systems journal, October 1986

Strongly inhomogeneous phases and non-Fermi-liquid behavior in randomly depleted Kondo lattices journal, April 2007

Lifshitz Transition in Kondo Alloys journal, May 2013

Heavy-fermion systems journal, October 1984

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

Addendum: Non-Fermi-liquid behavior in d - and f -electron metals journal, July 2006

Unconventional Quantum Criticality in Heavy-Fermion Compounds journal, March 2011

Magnetoresistivity of the Kondo-system (La, Ce)B6 journal, September 1976

Specific heat of concentrated kondo systems: (La, Ce)Al2 and CeAl2 journal, December 1978

Kondo effect and impurity-impurity interaction in (La, Ce)B6 alloys journal, September 1978

Heavy-fermion behavior and the single-ion Kondo model journal, March 1987

Nature of 4 f magnetism in Ce 1 − x La x Pd 2 Si 2 journal, December 1989

Antiferromagnetism in CeAu 2 Si 2 - and CeAg 2 Si 2 -based Kondo-lattice systems journal, October 1994

Intersite Coupling Effects in a Kondo Lattice journal, August 2002

Single-Ion Kondo Scaling of the Coherent Fermi Liquid Regime in Ce 1 − x La x Ni 2 Ge 2 journal, February 2012

Some exact results for dilute mixed-valent and heavy-fermion systems journal, September 1989

Two Fluid Description of the Kondo Lattice journal, January 2004

Investigation of new lanthanum-, cerium- and uranium-based ternary intermetallics journal, September 1985

Specific heats and crystal-field splittings of CeCu 2 Ge 2 , CeRu 2 Ge 2 and UBe 13 journal, January 1987

CeCu 2 Ge 2 : Magnetic order in a Kondo lattice journal, January 1987

Crystal field excitations in CeCu 2 Ge 2 : Revisited employing a single crystal and inelastic neutron scattering journal, April 2012

Growth of single crystals from metallic fluxes journal, June 1992

High-temperature solution growth of intermetallic single crystals and quasicrystals journal, May 2001

Experimental setup for the measurement of the thermoelectric power in zero and applied magnetic field journal, March 2010

Anisotropic transport and magnetic properties and magnetic-field tuned states of CeZn 11 single crystals journal, August 2013

Thermodynamics of Ce impurities in a magnetic field journal, October 1985

Specific heat of (La, Ce)B6 single crystals in a magnetic field at low temperatures journal, January 1986

Low-Temperature Specific Heat of Ce x La 1- x Cu 6 journal, March 1989

Thermodynamics of the Kondo Model journal, August 1982

Magnetoresistance in heavy-fermion alloys journal, February 1988

Thermoelectric power of cerium and ytterbium intermetallics journal, September 2003

Theory of the thermoelectricity of intermetallic compounds with Ce or Yb ions journal, April 2005

Relationship between the thermopower and entropy of strongly correlated electron systems journal, August 2007

Specific heat of the Kondo model journal, September 1982

Interpretation of Kondo experiments in a magnetic field journal, November 1975

The Kondo lattice and weak antiferromagnetism journal, July 1977

A correlation between specific heat and the ratioTK/TN in magnetic Kondo lattices journal, February 1992

Crystal statistics with long-range forces: I. The equivalent neighbour model journal, December 1966

Simple Cubic Random-Site Percolation Thresholds for Complex Neighbourhoods journal, October 2012

Coherence Scale of the Kondo Lattice journal, July 2000

Kondo Effect and Antiferromagnetism in CeCu2Ge2: An Electronic Structure Study journal, February 2007

Breakdown of coherence in Kondo alloys: crucial role of concentration versus band filling journal, July 2019

Emergent Coherent Lattice Behavior in Kondo Nanosystems text, January 2018

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Title: Remarkably robust and correlated coherence and antiferromagnetism in (Ce_1-xLa_x)Cu₂Ge₂

Disorder and coherence in heavy-fermion systems
journal, October 1986

Strongly inhomogeneous phases and non-Fermi-liquid behavior in randomly depleted Kondo lattices
journal, April 2007

Lifshitz Transition in Kondo Alloys
journal, May 2013

Heavy-fermion systems
journal, October 1984

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

Addendum: Non-Fermi-liquid behavior in $d$ - and $f$ -electron metals
journal, July 2006

Unconventional Quantum Criticality in Heavy-Fermion Compounds
journal, March 2011

Magnetoresistivity of the Kondo-system (La, Ce)B6
journal, September 1976

Specific heat of concentrated kondo systems: (La, Ce)Al2 and CeAl2
journal, December 1978

Kondo effect and impurity-impurity interaction in (La, Ce)B6 alloys
journal, September 1978

Heavy-fermion behavior and the single-ion Kondo model
journal, March 1987

Nature of 4 f magnetism in ${Ce}_{1 - x}$ ${La}_{x}$ ${Pd}_{2}$ ${Si}_{2}$
journal, December 1989

Antiferromagnetism in CeAu ₂ Si ₂ - and CeAg ₂ Si ₂ -based Kondo-lattice systems
journal, October 1994

Intersite Coupling Effects in a Kondo Lattice
journal, August 2002

Single-Ion Kondo Scaling of the Coherent Fermi Liquid Regime in ${Ce}_{1 - x} {La}_{x} {Ni}_{2} {Ge}_{2}$
journal, February 2012

Some exact results for dilute mixed-valent and heavy-fermion systems
journal, September 1989

Two Fluid Description of the Kondo Lattice
journal, January 2004

Investigation of new lanthanum-, cerium- and uranium-based ternary intermetallics
journal, September 1985

Specific heats and crystal-field splittings of CeCu 2 Ge 2 , CeRu 2 Ge 2 and UBe 13
journal, January 1987

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journal, January 1987

Crystal field excitations in CeCu ₂ Ge ₂ : Revisited employing a single crystal and inelastic neutron scattering
journal, April 2012

Growth of single crystals from metallic fluxes
journal, June 1992

High-temperature solution growth of intermetallic single crystals and quasicrystals
journal, May 2001

Experimental setup for the measurement of the thermoelectric power in zero and applied magnetic field
journal, March 2010

Anisotropic transport and magnetic properties and magnetic-field tuned states of CeZn $_{11}$ single crystals
journal, August 2013

Thermodynamics of Ce impurities in a magnetic field
journal, October 1985

Specific heat of (La, Ce)B6 single crystals in a magnetic field at low temperatures
journal, January 1986

Low-Temperature Specific Heat of Ce _x La _{1- x} Cu ₆
journal, March 1989

Thermodynamics of the Kondo Model
journal, August 1982

Magnetoresistance in heavy-fermion alloys
journal, February 1988

Thermoelectric power of cerium and ytterbium intermetallics
journal, September 2003

Theory of the thermoelectricity of intermetallic compounds with Ce or Yb ions
journal, April 2005

Relationship between the thermopower and entropy of strongly correlated electron systems
journal, August 2007

Specific heat of the Kondo model
journal, September 1982

Interpretation of Kondo experiments in a magnetic field
journal, November 1975

The Kondo lattice and weak antiferromagnetism
journal, July 1977

A correlation between specific heat and the ratioTK/TN in magnetic Kondo lattices
journal, February 1992

Crystal statistics with long-range forces: I. The equivalent neighbour model
journal, December 1966

Simple Cubic Random-Site Percolation Thresholds for Complex Neighbourhoods
journal, October 2012

Coherence Scale of the Kondo Lattice
journal, July 2000

Kondo Effect and Antiferromagnetism in CeCu2Ge2: An Electronic Structure Study
journal, February 2007

Breakdown of coherence in Kondo alloys: crucial role of concentration versus band filling
journal, July 2019

Emergent Coherent Lattice Behavior in Kondo Nanosystems
text, January 2018

Breakdown of coherence in Kondo alloys: crucial role of concentration vs band filling
text, January 2018