Frustration and commensurate pinning in the low temperature phases of TTF-TCNQ

C. Hartzstein; V. Zevin; M. Weger

doi:10.1016/0378-4363(81)90896-2

Frustration and commensurate pinning in the low temperature phases of TTF-TCNQ

C. Hartzstein^*
, V. Zevin
, M. Weger

^*Corresponding author for this work

Racah Institute of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Stimulated by new experimental information about the low temperature phases of TTF-TCNQ we investigated the Landau free energy (LFE) which also includes fourth order interaction terms both between similar and different chains. This LFE accounts both for the appearance of the new "2a" phase at T<30K and P∼5Kbar and the merging of the second Peierls transition with the first order incommensurate-commensurate transition. The role of the frustration which arises from the dependence of the LFE on the phases of the order parameters is analyzed and it is shown that a finite fourth order interaction term is necessary to stabilize the "4a" commensurate phase.

Original language	English
Pages (from-to)	1191-1192
Number of pages	2
Journal	Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics
Volume	108
Issue number	1-3
DOIs	https://doi.org/10.1016/0378-4363(81)90896-2
State	Published - 1981

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10.1016/0378-4363(81)90896-2

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abstract = "Stimulated by new experimental information about the low temperature phases of TTF-TCNQ we investigated the Landau free energy (LFE) which also includes fourth order interaction terms both between similar and different chains. This LFE accounts both for the appearance of the new {"}2a{"} phase at T<30K and P∼5Kbar and the merging of the second Peierls transition with the first order incommensurate-commensurate transition. The role of the frustration which arises from the dependence of the LFE on the phases of the order parameters is analyzed and it is shown that a finite fourth order interaction term is necessary to stabilize the {"}4a{"} commensurate phase.",

author = "C. Hartzstein and V. Zevin and M. Weger",

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doi = "10.1016/0378-4363(81)90896-2",

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AU - Hartzstein, C.

AU - Zevin, V.

AU - Weger, M.

PY - 1981

Y1 - 1981

N2 - Stimulated by new experimental information about the low temperature phases of TTF-TCNQ we investigated the Landau free energy (LFE) which also includes fourth order interaction terms both between similar and different chains. This LFE accounts both for the appearance of the new "2a" phase at T<30K and P∼5Kbar and the merging of the second Peierls transition with the first order incommensurate-commensurate transition. The role of the frustration which arises from the dependence of the LFE on the phases of the order parameters is analyzed and it is shown that a finite fourth order interaction term is necessary to stabilize the "4a" commensurate phase.

AB - Stimulated by new experimental information about the low temperature phases of TTF-TCNQ we investigated the Landau free energy (LFE) which also includes fourth order interaction terms both between similar and different chains. This LFE accounts both for the appearance of the new "2a" phase at T<30K and P∼5Kbar and the merging of the second Peierls transition with the first order incommensurate-commensurate transition. The role of the frustration which arises from the dependence of the LFE on the phases of the order parameters is analyzed and it is shown that a finite fourth order interaction term is necessary to stabilize the "4a" commensurate phase.

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JF - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics

IS - 1-3

ER -

Frustration and commensurate pinning in the low temperature phases of TTF-TCNQ

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