Field-induced charge-density-wave transitions in the organic metal α-(BEDT-TTF)2KHg(SCN)4 under pressure

Органические проводники

Автор(и)

  • D. Andres Walther-Meissner-Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching, Germany
  • M.V. Kartsovnik Walther-Meissner-Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching, Germany
  • W. Biberacher Walther-Meissner-Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching, Germany
  • K. Neumaier Walther-Meissner-Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching, Germany
  • I. Sheikin Laboratoire National des Champs Magnétiques Intenses, CNRS, 25 rue des Martyrs, B.P. 166, 38042 Grenoble Cedex 9, France
  • H. Müller European Synchrotron Radiation Facility, F-38043 Grenoble, France
  • N.D. Kushch Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia

DOI:

https://doi.org/10.1063/1.3670031

Ключові слова:

organic conductor, electronic phase transitions, charge-density waves, field-induced charge-density waves, high pressure, magnetoresistance.

Анотація

Successive magnetic-field-induced charge-density-wave transitions in the layered molecular conductor α-(BEDT-TTF)2KHg(SCN)4 are studied in the hydrostatic pressure regime, in which the zero field chargedensity- wave (CDW) state is completely suppressed. The orbital effect of the magnetic field is demonstrated to restore the density wave, while the orbital quantization induces transitions between different CDW states at changing the field strength. The latter appear as distinct anomalies in the magnetoresistance as a function of field. The interplay between the orbital and Pauli paramagnetic effects acting, respectively, to enhance and to suppress the CDW instability is particularly manifest in the angular dependence of the field-induced anomalies.

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Опубліковано

2011-08-22

Як цитувати

(1)
Andres, D.; Kartsovnik, M.; Biberacher, W.; Neumaier, K.; Sheikin, I.; Müller, H.; Kushch, N. Field-Induced Charge-Density-Wave Transitions in the Organic Metal α-(BEDT-TTF)2KHg(SCN)4 under Pressure: Органические проводники. Fiz. Nizk. Temp. 2011, 37, 959-969.

Номер

Том 37 № 9-10 (2011)

Розділ

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