Field-dependence of the specific heat and magnetothermal effect for α-(BEDT-TTF)2KHg(SCN)4 in the density wave and high field ground states

N. A. Fortune; M. A. Eblen; S. Uji; H. Aoki; J. Yamada; S. Tanaka; S. Maki; S. Nakatsuji; H. Anzai

doi:10.1016/S0379-6779(98)00431-7

Field-dependence of the specific heat and magnetothermal effect for α-(BEDT-TTF)₂KHg(SCN)₄ in the density wave and high field ground states

N. A. Fortune, M. A. Eblen, S. Uji, H. Aoki, J. Yamada, S. Tanaka, S. Maki, S. Nakatsuji, H. Anzai

Science

Research output: Contribution to journal › Conference article › peer-review

8 Citations (Scopus)

Abstract

We present thermodynamic evidence for a field-induced first-order phase transition in α-(BEDT-TTF)₂KHg(SCN)₄ in the low-temperature, high field limit (0.35 K, 23.4 T). Magnetoquantum oscillations with a fundamental frequency of 673 T(±1%) and its harmonics are observed in both magnetothermal and specific heat measurements below and above the transition. The field-independence of the non-oscillatory background contribution to the specific heat between 23.4 T and 33 T is consistent with a high-field metallic state.

Original language	English
Pages (from-to)	2078-2079
Number of pages	2
Journal	Synthetic Metals
Volume	103
Issue number	1-3
DOIs	https://doi.org/10.1016/S0379-6779(98)00431-7
Publication status	Published - 1999 Jun 24
Event	Proceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98) - Montpellier Duration: 1998 Jul 12 → 1998 Jul 18

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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title = "Field-dependence of the specific heat and magnetothermal effect for α-(BEDT-TTF)2KHg(SCN)4 in the density wave and high field ground states",

abstract = "We present thermodynamic evidence for a field-induced first-order phase transition in α-(BEDT-TTF)2KHg(SCN)4 in the low-temperature, high field limit (0.35 K, 23.4 T). Magnetoquantum oscillations with a fundamental frequency of 673 T(±1%) and its harmonics are observed in both magnetothermal and specific heat measurements below and above the transition. The field-independence of the non-oscillatory background contribution to the specific heat between 23.4 T and 33 T is consistent with a high-field metallic state.",

author = "Fortune, {N. A.} and Eblen, {M. A.} and S. Uji and H. Aoki and J. Yamada and S. Tanaka and S. Maki and S. Nakatsuji and H. Anzai",

note = "Funding Information: *nfortune@science.smth.edu.A portion of this work was performed at the National High Magnetic Field Laboratory, which is supported by NSF Cooperative Agreement No. IX&9527035. Acknowledgment is t&de to the donors&the Petroleum Research Fund, administered by the ACS and to the Research Corporation (CC45551 for Dartial su~txxt of this research. NAF thanks the NRIM Center of &elle&e Vi&q R&&chers Program for support during the initial phase of the work. MAE acknowledges additiona supportf rom the Howard Hughes Medical Institute undergraduate research fellowship program administered by Smith College.; Proceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98) ; Conference date: 12-07-1998 Through 18-07-1998",

year = "1999",

month = jun,

day = "24",

doi = "10.1016/S0379-6779(98)00431-7",

language = "English",

volume = "103",

pages = "2078--2079",

journal = "Synthetic Metals",

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TY - JOUR

T1 - Field-dependence of the specific heat and magnetothermal effect for α-(BEDT-TTF)2KHg(SCN)4 in the density wave and high field ground states

AU - Fortune, N. A.

AU - Eblen, M. A.

AU - Uji, S.

AU - Aoki, H.

AU - Yamada, J.

AU - Tanaka, S.

AU - Maki, S.

AU - Nakatsuji, S.

AU - Anzai, H.

N1 - Funding Information: *nfortune@science.smth.edu.A portion of this work was performed at the National High Magnetic Field Laboratory, which is supported by NSF Cooperative Agreement No. IX&9527035. Acknowledgment is t&de to the donors&the Petroleum Research Fund, administered by the ACS and to the Research Corporation (CC45551 for Dartial su~txxt of this research. NAF thanks the NRIM Center of &elle&e Vi&q R&&chers Program for support during the initial phase of the work. MAE acknowledges additiona supportf rom the Howard Hughes Medical Institute undergraduate research fellowship program administered by Smith College.

PY - 1999/6/24

Y1 - 1999/6/24

N2 - We present thermodynamic evidence for a field-induced first-order phase transition in α-(BEDT-TTF)2KHg(SCN)4 in the low-temperature, high field limit (0.35 K, 23.4 T). Magnetoquantum oscillations with a fundamental frequency of 673 T(±1%) and its harmonics are observed in both magnetothermal and specific heat measurements below and above the transition. The field-independence of the non-oscillatory background contribution to the specific heat between 23.4 T and 33 T is consistent with a high-field metallic state.

AB - We present thermodynamic evidence for a field-induced first-order phase transition in α-(BEDT-TTF)2KHg(SCN)4 in the low-temperature, high field limit (0.35 K, 23.4 T). Magnetoquantum oscillations with a fundamental frequency of 673 T(±1%) and its harmonics are observed in both magnetothermal and specific heat measurements below and above the transition. The field-independence of the non-oscillatory background contribution to the specific heat between 23.4 T and 33 T is consistent with a high-field metallic state.

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U2 - 10.1016/S0379-6779(98)00431-7

DO - 10.1016/S0379-6779(98)00431-7

M3 - Conference article

AN - SCOPUS:0033138190

VL - 103

SP - 2078

EP - 2079

JO - Synthetic Metals

JF - Synthetic Metals

SN - 0379-6779

IS - 1-3

T2 - Proceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98)

Y2 - 12 July 1998 through 18 July 1998

ER -

Field-dependence of the specific heat and magnetothermal effect for α-(BEDT-TTF)₂KHg(SCN)₄ in the density wave and high field ground states

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