Magneto-oscillatory behavior and magnetism in quasi-two-dimensional organic conductors

J. S. Brooks; S. J. Klepper; C. C. Agosta; M. Tokumoto; N. Kinoshita; Y. Tanaka; S. Uji; H. Aoki; G. J. Athas; X. Chen; H. Anzai

doi:10.1016/0379-6779(93)90327-S

Magneto-oscillatory behavior and magnetism in quasi-two-dimensional organic conductors

J. S. Brooks, S. J. Klepper, C. C. Agosta, M. Tokumoto, N. Kinoshita, Y. Tanaka, S. Uji, H. Aoki, G. J. Athas, X. Chen, H. Anzai

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

13 Citations (Scopus)

Abstract

We have studied the magneto-oscillatory behavior of quasi-two-dimensional (quasi-2D) organic conductors of the type (BEDT-TTF)₂XHg(SCN)₄, where X = K, Rb, NH₄, in order to probe the underlying magnetic behavior of these materials. The K and Rb compounds are metallic down to 50 mK, but are not superconducting. They both display a dual series of magneto-oscillations, a magnetic ordering at low temperatures, below about 10 K, and a sharp drop in the magnetoresistance associated with the destruction of this phase with the application of high magnetic fields at low temperatures. In contrast, the NH₄ material is a superconductor at low temperatures (below 1K) up to a pressure of at least 4 kbar. It also displays a complex background magnetoresistance upon which is superposed a single oscillation series. In all three organic materials, there is a strong interaction between the underlying magnetic phases (which influences the open orbits) and the magneto-oscillations which result from the quasi-2D Fermi surface behavior.

Original language	English
Pages (from-to)	1791-1794
Number of pages	4
Journal	Synthetic Metals
Volume	56
Issue number	1
DOIs	https://doi.org/10.1016/0379-6779(93)90327-S
Publication status	Published - 1993 Mar 29
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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@article{bffc516a126340aa95f0985c524f00a5,

title = "Magneto-oscillatory behavior and magnetism in quasi-two-dimensional organic conductors",

abstract = "We have studied the magneto-oscillatory behavior of quasi-two-dimensional (quasi-2D) organic conductors of the type (BEDT-TTF)2XHg(SCN)4, where X = K, Rb, NH4, in order to probe the underlying magnetic behavior of these materials. The K and Rb compounds are metallic down to 50 mK, but are not superconducting. They both display a dual series of magneto-oscillations, a magnetic ordering at low temperatures, below about 10 K, and a sharp drop in the magnetoresistance associated with the destruction of this phase with the application of high magnetic fields at low temperatures. In contrast, the NH4 material is a superconductor at low temperatures (below 1K) up to a pressure of at least 4 kbar. It also displays a complex background magnetoresistance upon which is superposed a single oscillation series. In all three organic materials, there is a strong interaction between the underlying magnetic phases (which influences the open orbits) and the magneto-oscillations which result from the quasi-2D Fermi surface behavior.",

author = "Brooks, {J. S.} and Klepper, {S. J.} and Agosta, {C. C.} and M. Tokumoto and N. Kinoshita and Y. Tanaka and S. Uji and H. Aoki and Athas, {G. J.} and X. Chen and H. Anzai",

note = "Funding Information: The authors are grateful to the staff of the Francis Bitter National Magnet Laboratory (supported by the National Science Foundation), where this work took place. Research at Boston University is supported by NSF DMR 88-18510,",

year = "1993",

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doi = "10.1016/0379-6779(93)90327-S",

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T1 - Magneto-oscillatory behavior and magnetism in quasi-two-dimensional organic conductors

AU - Brooks, J. S.

AU - Klepper, S. J.

AU - Agosta, C. C.

AU - Tokumoto, M.

AU - Kinoshita, N.

AU - Tanaka, Y.

AU - Uji, S.

AU - Aoki, H.

AU - Athas, G. J.

AU - Chen, X.

AU - Anzai, H.

N1 - Funding Information: The authors are grateful to the staff of the Francis Bitter National Magnet Laboratory (supported by the National Science Foundation), where this work took place. Research at Boston University is supported by NSF DMR 88-18510,

PY - 1993/3/29

Y1 - 1993/3/29

N2 - We have studied the magneto-oscillatory behavior of quasi-two-dimensional (quasi-2D) organic conductors of the type (BEDT-TTF)2XHg(SCN)4, where X = K, Rb, NH4, in order to probe the underlying magnetic behavior of these materials. The K and Rb compounds are metallic down to 50 mK, but are not superconducting. They both display a dual series of magneto-oscillations, a magnetic ordering at low temperatures, below about 10 K, and a sharp drop in the magnetoresistance associated with the destruction of this phase with the application of high magnetic fields at low temperatures. In contrast, the NH4 material is a superconductor at low temperatures (below 1K) up to a pressure of at least 4 kbar. It also displays a complex background magnetoresistance upon which is superposed a single oscillation series. In all three organic materials, there is a strong interaction between the underlying magnetic phases (which influences the open orbits) and the magneto-oscillations which result from the quasi-2D Fermi surface behavior.

AB - We have studied the magneto-oscillatory behavior of quasi-two-dimensional (quasi-2D) organic conductors of the type (BEDT-TTF)2XHg(SCN)4, where X = K, Rb, NH4, in order to probe the underlying magnetic behavior of these materials. The K and Rb compounds are metallic down to 50 mK, but are not superconducting. They both display a dual series of magneto-oscillations, a magnetic ordering at low temperatures, below about 10 K, and a sharp drop in the magnetoresistance associated with the destruction of this phase with the application of high magnetic fields at low temperatures. In contrast, the NH4 material is a superconductor at low temperatures (below 1K) up to a pressure of at least 4 kbar. It also displays a complex background magnetoresistance upon which is superposed a single oscillation series. In all three organic materials, there is a strong interaction between the underlying magnetic phases (which influences the open orbits) and the magneto-oscillations which result from the quasi-2D Fermi surface behavior.

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Magneto-oscillatory behavior and magnetism in quasi-two-dimensional organic conductors

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