Possible quantum Hall effect in a magnetic-field-induced phase transition in the quasi-one-dimensional CDW organic conductor, HMTSF-TCNQ

Keizo Murata; Yuhei Fukumoto; Keiichi Yokogawa; Woun Kang; Ryo Takaoka; Ryota Tada; H. Hirayama; James S. Brooks; David Graf; Harukazu Yoshino; Takahiko Sasaki; Reizo Kato

doi:10.1016/j.physb.2014.11.080

Possible quantum Hall effect in a magnetic-field-induced phase transition in the quasi-one-dimensional CDW organic conductor, HMTSF-TCNQ

Keizo Murata, Yuhei Fukumoto, Keiichi Yokogawa, Woun Kang, Ryo Takaoka, Ryota Tada, H. Hirayama, James S. Brooks, David Graf, Harukazu Yoshino, Takahiko Sasaki, Reizo Kato

Department of Physics

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

3 Scopus citations

Abstract

We have studied the angular dependence of magnetoresistance and Hall effect of the CDW organic conductor, HMTSF-TCNQ in order to see whether a magnetic-field-induced phase exists in the charge density wave (CDW) system, similarly to the magnetic-field-induced SDW phases in (TMTSF)₂X. The anomaly in magnetoresistance was observed only around the pressure where the CDW is almost suppressed, i.e. around 0.8-1.1 GPa, but neither at low pressures (0 and 0.5 GPa) nor at high pressure above 2 GPa. This behavior is quite similar to that of (TMTSF)₂X. At 1.1 GPa anomalies were found at fields of 0.2 T and 10 T. We speculate that at 1.1 GPa the field-induced phase is located between 0.2 T and 10 T, where 1D Fermi surface sheet and 2D Fermi-surface pocket are present. The R_xy shows plateau structure and R_xx was very small in the same region, suggestive of quantum Hall effect.

Original language	English
Pages (from-to)	241-244
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	460
DOIs	https://doi.org/10.1016/j.physb.2014.11.080
State	Published - 1 Mar 2015

Bibliographical note

Funding Information:
This work is partially supported JSPS Inst. Prog. for Young Researcher Overseas Visits “Promoting International Young Researchers in Mathematics and Math. Sci. by OCAMI” and Grant-in-Aid Sci. Res. on Innovative Areas #23110722 from M. Education and NSF DMR#1005293 (FSU). W.K. was supported by a grant from the National Research Foundation of Korea (NRF), funded by the Korean Government ( MSIP ) (Nos. 2011-0030902 , 2010-00453 and 2008-0061893 ). Work at the NHMFL is supported by the NSF DMR#0654118 , and by the State of Florida . To achieve this experiment, the assistance of A. Kiswandhi, S. Benjamin, L. Winter of the Brooks group was indispensable. We appreciate Prof. H. Fujiwara of Osaka Prefecture University for the X-ray examination for selecting high quality crystals.

Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.

Keywords

Charge density wave (CDW)
HMTSF-TCNQ
Magnetic-field-induced-CDW

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10.1016/j.physb.2014.11.080

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Murata, K., Fukumoto, Y., Yokogawa, K., Kang, W., Takaoka, R., Tada, R., Hirayama, H., Brooks, J. S., Graf, D., Yoshino, H., Sasaki, T., & Kato, R. (2015). Possible quantum Hall effect in a magnetic-field-induced phase transition in the quasi-one-dimensional CDW organic conductor, HMTSF-TCNQ. Physica B: Condensed Matter, 460, 241-244. https://doi.org/10.1016/j.physb.2014.11.080

@article{a7ca22164100407a82ee0cc9e308da9f,

title = "Possible quantum Hall effect in a magnetic-field-induced phase transition in the quasi-one-dimensional CDW organic conductor, HMTSF-TCNQ",

abstract = "We have studied the angular dependence of magnetoresistance and Hall effect of the CDW organic conductor, HMTSF-TCNQ in order to see whether a magnetic-field-induced phase exists in the charge density wave (CDW) system, similarly to the magnetic-field-induced SDW phases in (TMTSF)2X. The anomaly in magnetoresistance was observed only around the pressure where the CDW is almost suppressed, i.e. around 0.8-1.1 GPa, but neither at low pressures (0 and 0.5 GPa) nor at high pressure above 2 GPa. This behavior is quite similar to that of (TMTSF)2X. At 1.1 GPa anomalies were found at fields of 0.2 T and 10 T. We speculate that at 1.1 GPa the field-induced phase is located between 0.2 T and 10 T, where 1D Fermi surface sheet and 2D Fermi-surface pocket are present. The Rxy shows plateau structure and Rxx was very small in the same region, suggestive of quantum Hall effect.",

keywords = "Charge density wave (CDW), HMTSF-TCNQ, Magnetic-field-induced-CDW",

author = "Keizo Murata and Yuhei Fukumoto and Keiichi Yokogawa and Woun Kang and Ryo Takaoka and Ryota Tada and H. Hirayama and Brooks, {James S.} and David Graf and Harukazu Yoshino and Takahiko Sasaki and Reizo Kato",

note = "Funding Information: This work is partially supported JSPS Inst. Prog. for Young Researcher Overseas Visits “Promoting International Young Researchers in Mathematics and Math. Sci. by OCAMI” and Grant-in-Aid Sci. Res. on Innovative Areas #23110722 from M. Education and NSF DMR#1005293 (FSU). W.K. was supported by a grant from the National Research Foundation of Korea (NRF), funded by the Korean Government ( MSIP ) (Nos. 2011-0030902 , 2010-00453 and 2008-0061893 ). Work at the NHMFL is supported by the NSF DMR#0654118 , and by the State of Florida . To achieve this experiment, the assistance of A. Kiswandhi, S. Benjamin, L. Winter of the Brooks group was indispensable. We appreciate Prof. H. Fujiwara of Osaka Prefecture University for the X-ray examination for selecting high quality crystals. Publisher Copyright: {\textcopyright} 2014 Elsevier B.V. All rights reserved.",

year = "2015",

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doi = "10.1016/j.physb.2014.11.080",

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Murata, K, Fukumoto, Y, Yokogawa, K, Kang, W, Takaoka, R, Tada, R, Hirayama, H, Brooks, JS, Graf, D, Yoshino, H, Sasaki, T & Kato, R 2015, 'Possible quantum Hall effect in a magnetic-field-induced phase transition in the quasi-one-dimensional CDW organic conductor, HMTSF-TCNQ', Physica B: Condensed Matter, vol. 460, pp. 241-244. https://doi.org/10.1016/j.physb.2014.11.080

TY - JOUR

T1 - Possible quantum Hall effect in a magnetic-field-induced phase transition in the quasi-one-dimensional CDW organic conductor, HMTSF-TCNQ

AU - Murata, Keizo

AU - Fukumoto, Yuhei

AU - Yokogawa, Keiichi

AU - Kang, Woun

AU - Takaoka, Ryo

AU - Tada, Ryota

AU - Hirayama, H.

AU - Brooks, James S.

AU - Graf, David

AU - Yoshino, Harukazu

AU - Sasaki, Takahiko

AU - Kato, Reizo

N1 - Funding Information: This work is partially supported JSPS Inst. Prog. for Young Researcher Overseas Visits “Promoting International Young Researchers in Mathematics and Math. Sci. by OCAMI” and Grant-in-Aid Sci. Res. on Innovative Areas #23110722 from M. Education and NSF DMR#1005293 (FSU). W.K. was supported by a grant from the National Research Foundation of Korea (NRF), funded by the Korean Government ( MSIP ) (Nos. 2011-0030902 , 2010-00453 and 2008-0061893 ). Work at the NHMFL is supported by the NSF DMR#0654118 , and by the State of Florida . To achieve this experiment, the assistance of A. Kiswandhi, S. Benjamin, L. Winter of the Brooks group was indispensable. We appreciate Prof. H. Fujiwara of Osaka Prefecture University for the X-ray examination for selecting high quality crystals. Publisher Copyright: © 2014 Elsevier B.V. All rights reserved.

PY - 2015/3/1

Y1 - 2015/3/1

N2 - We have studied the angular dependence of magnetoresistance and Hall effect of the CDW organic conductor, HMTSF-TCNQ in order to see whether a magnetic-field-induced phase exists in the charge density wave (CDW) system, similarly to the magnetic-field-induced SDW phases in (TMTSF)2X. The anomaly in magnetoresistance was observed only around the pressure where the CDW is almost suppressed, i.e. around 0.8-1.1 GPa, but neither at low pressures (0 and 0.5 GPa) nor at high pressure above 2 GPa. This behavior is quite similar to that of (TMTSF)2X. At 1.1 GPa anomalies were found at fields of 0.2 T and 10 T. We speculate that at 1.1 GPa the field-induced phase is located between 0.2 T and 10 T, where 1D Fermi surface sheet and 2D Fermi-surface pocket are present. The Rxy shows plateau structure and Rxx was very small in the same region, suggestive of quantum Hall effect.

AB - We have studied the angular dependence of magnetoresistance and Hall effect of the CDW organic conductor, HMTSF-TCNQ in order to see whether a magnetic-field-induced phase exists in the charge density wave (CDW) system, similarly to the magnetic-field-induced SDW phases in (TMTSF)2X. The anomaly in magnetoresistance was observed only around the pressure where the CDW is almost suppressed, i.e. around 0.8-1.1 GPa, but neither at low pressures (0 and 0.5 GPa) nor at high pressure above 2 GPa. This behavior is quite similar to that of (TMTSF)2X. At 1.1 GPa anomalies were found at fields of 0.2 T and 10 T. We speculate that at 1.1 GPa the field-induced phase is located between 0.2 T and 10 T, where 1D Fermi surface sheet and 2D Fermi-surface pocket are present. The Rxy shows plateau structure and Rxx was very small in the same region, suggestive of quantum Hall effect.

KW - Charge density wave (CDW)

KW - HMTSF-TCNQ

KW - Magnetic-field-induced-CDW

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U2 - 10.1016/j.physb.2014.11.080

DO - 10.1016/j.physb.2014.11.080

M3 - Article

AN - SCOPUS:84923884550

SN - 0921-4526

VL - 460

SP - 241

EP - 244

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

ER -

Possible quantum Hall effect in a magnetic-field-induced phase transition in the quasi-one-dimensional CDW organic conductor, HMTSF-TCNQ

Abstract

Bibliographical note

Keywords

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