Spin liquid in an almost ferromagnetic Kondo lattice

K. A. Kikoin; M. N. Kiselev; A. S. Mishchenko

doi:10.1134/1.558374

Spin liquid in an almost ferromagnetic Kondo lattice

K. A. Kikoin, M. N. Kiselev, A. S. Mishchenko

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Abstract

A theory of stabilization of a spin liquid in a Kondo lattice at temperatures close to the temperature of antiferromagnetic instability has been developed. Kondo exchange scattering of conduction electrons leads to emergence of a state of the spin liquid of the resonating valence bonds (RVB) type at T > T_K. Owing to this stabilization, low-energy processes of Kondo scattering with energies below T_K are frozen so that the "singlet" state of the Kondo lattice is not realized; instead a strongly correlated spin liquid with developed antiferromagnetic fluctuations occurs. A new version of the Feynman diagram technique has been developed to describe interaction between spin fluctuations and resonant valence bonds in a self-consistent manner. Emergence of a strongly anisotropic RVB spin liquid is discussed.

Original language	English
Pages (from-to)	399-414
Number of pages	16
Journal	Journal of Experimental and Theoretical Physics
Volume	85
Issue number	2
DOIs	https://doi.org/10.1134/1.558374
State	Published - 1 Jan 1997
Externally published	Yes

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General Physics and Astronomy

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@article{8e3db20331d640a0a8f417aa81cf5e95,

title = "Spin liquid in an almost ferromagnetic Kondo lattice",

abstract = "A theory of stabilization of a spin liquid in a Kondo lattice at temperatures close to the temperature of antiferromagnetic instability has been developed. Kondo exchange scattering of conduction electrons leads to emergence of a state of the spin liquid of the resonating valence bonds (RVB) type at T > TK. Owing to this stabilization, low-energy processes of Kondo scattering with energies below TK are frozen so that the {"}singlet{"} state of the Kondo lattice is not realized; instead a strongly correlated spin liquid with developed antiferromagnetic fluctuations occurs. A new version of the Feynman diagram technique has been developed to describe interaction between spin fluctuations and resonant valence bonds in a self-consistent manner. Emergence of a strongly anisotropic RVB spin liquid is discussed.",

author = "Kikoin, {K. A.} and Kiselev, {M. N.} and Mishchenko, {A. S.}",

note = "Funding Information: The authors are indebted to Yu. Kagan, N. V. Prokof{\textquoteright}ev, G. G. Khaliullin, D. E. Khmel{\textquoteright}nitski{\v Z}, and D. I. Khomski{\v Z} for helpful discussions and critical remarks. This work was supported by the Russian Fund for Fundamental Research (Project 95-02-04250a), INTAS (Project 93-2834), and Netherlands Organization for Support of Scientific Research (NWO, Project 07-30-002).",

year = "1997",

month = jan,

day = "1",

doi = "10.1134/1.558374",

language = "English",

volume = "85",

pages = "399--414",

journal = "Journal of Experimental and Theoretical Physics",

issn = "1063-7761",

publisher = "Pleiades Publishing",

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TY - JOUR

T1 - Spin liquid in an almost ferromagnetic Kondo lattice

AU - Kikoin, K. A.

AU - Kiselev, M. N.

AU - Mishchenko, A. S.

N1 - Funding Information: The authors are indebted to Yu. Kagan, N. V. Prokof’ev, G. G. Khaliullin, D. E. Khmel’nitskiŽ, and D. I. KhomskiŽ for helpful discussions and critical remarks. This work was supported by the Russian Fund for Fundamental Research (Project 95-02-04250a), INTAS (Project 93-2834), and Netherlands Organization for Support of Scientific Research (NWO, Project 07-30-002).

PY - 1997/1/1

Y1 - 1997/1/1

N2 - A theory of stabilization of a spin liquid in a Kondo lattice at temperatures close to the temperature of antiferromagnetic instability has been developed. Kondo exchange scattering of conduction electrons leads to emergence of a state of the spin liquid of the resonating valence bonds (RVB) type at T > TK. Owing to this stabilization, low-energy processes of Kondo scattering with energies below TK are frozen so that the "singlet" state of the Kondo lattice is not realized; instead a strongly correlated spin liquid with developed antiferromagnetic fluctuations occurs. A new version of the Feynman diagram technique has been developed to describe interaction between spin fluctuations and resonant valence bonds in a self-consistent manner. Emergence of a strongly anisotropic RVB spin liquid is discussed.

AB - A theory of stabilization of a spin liquid in a Kondo lattice at temperatures close to the temperature of antiferromagnetic instability has been developed. Kondo exchange scattering of conduction electrons leads to emergence of a state of the spin liquid of the resonating valence bonds (RVB) type at T > TK. Owing to this stabilization, low-energy processes of Kondo scattering with energies below TK are frozen so that the "singlet" state of the Kondo lattice is not realized; instead a strongly correlated spin liquid with developed antiferromagnetic fluctuations occurs. A new version of the Feynman diagram technique has been developed to describe interaction between spin fluctuations and resonant valence bonds in a self-consistent manner. Emergence of a strongly anisotropic RVB spin liquid is discussed.

UR - http://www.scopus.com/inward/record.url?scp=21944432290&partnerID=8YFLogxK

U2 - 10.1134/1.558374

DO - 10.1134/1.558374

M3 - Article

AN - SCOPUS:21944432290

SN - 1063-7761

VL - 85

SP - 399

EP - 414

JO - Journal of Experimental and Theoretical Physics

JF - Journal of Experimental and Theoretical Physics

IS - 2

ER -

Spin liquid in an almost ferromagnetic Kondo lattice

Abstract

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