High-field magnetotransport and Fermi-surface topology in the novel quasi-two-dimensional organic conductor bis(ethylenedithiolo)tetrathiafulvalenium mercuric postassium thiocyanate, (BEDT-TTF<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mo>)</mml:mo></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>KHg(SCN<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mm

Osada, Toshiko; Yagi, Ryuta; Kawasumi, A.; Kagoshima, S.; Miura, N.; Oshima, M.; Saito, Gunzi

doi:10.1103/physrevb.41.5428

Cited by 156 publications

(51 citation statements)

References 8 publications

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“…30b-30d are inconsistent with the 2D conducting behavior, partial nesting of the Fermi surface, and reconstruction of the Fermi surface at low temperatures (see section 3.5.6). The coexistence of the 2D and 1D Fermi surfaces was confirmed by the Fermi surface topology (Fermiology) [361][362][363][364] and is in good agreement with Figs. 30a and 30e.…”

supporting

confidence: 87%

“…The salt showed SdH oscillations with an abnormal kink at around 22 T, as observed by Osada et al (Fig. 67a), 586 which differs from those of the NH 4 salt. 587 AMRO of the K salt showed a drastic phase change at around 8 K. 588 Kartsovnik et al explained these behaviors in terms of the reconstruction of the Fermi surface through the nesting of the 1D Fermi part as seen in Figs.…”

Section: Symmetry Of Superconductivity;supporting

confidence: 68%

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Development of Conductive Organic Molecular Assemblies: Organic Metals, Superconductors, and Exotic Functional Materials

Saito¹,

Yoshida²

2007

Bulletin of the Chemical Society of Japan

371

127

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supporting

confidence: 87%

Section: Symmetry Of Superconductivity;supporting

confidence: 68%

Development of Conductive Organic Molecular Assemblies: Organic Metals, Superconductors, and Exotic Functional Materials

Saito¹,

Yoshida²

2007

Bulletin of the Chemical Society of Japan

371

127

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show abstract

“…Such a hysteresis is definitely inconsistent with a normal metallic behavior. On the other hand, it is known to be present in the CDW state of this compound [34][35][36]. Third, on lowering the temperature a strong decrease of the magnetoresistance background is observed at B ≥ 8 T, as can be seen in Fig.…”

Section: Re-entrant Cdw State Under Pressurementioning

confidence: 81%

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

Andres

Kartsovnik

Biberacher

et al. 2011

Low Temperature Physics

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Successive magnetic-field-induced charge-density-wave transitions in the layered molecular conductor α-(BEDT-TTF) 2 KHg(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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“…The compounds remain, however, metallic due to the ungapped cylindrical Fermi surface. The low-temperature state is characterized by a bunch of striking anomalies in high magnetic fields which, actually, have triggered the initial interest in these materials [22][23][24][25][26]. By now, it is clear that their behavior is largely governed by the coexistence of a narrow-gap CDW and metallic q2D carriers and, consequently, a rich phase diagram including several kinds of magnetic field-induced transitions between different CDW states, see, e.g., [27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Magnetic quantum oscillations in the charge-density-wave state of the organic metals α-(BEDT-TTF)2MHg(SCN)4 with M = K and Tl

Kartsovnik

Zverev

Andres

et al. 2014

Low Temperature Physics

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The low-temperature charge-density-wave (CDW) state in the layered organic metals α-(BEDT-TTF) 2 MHg(SCN) 4 has been studied by means of the Shubnikov -de Haas and de Haas -van Alphen effects. In addition to the dominant α-frequency, which is also observed in the normal state, both the magnetoresistance and magnetic torque possess a slowly oscillating component. These slow oscillations provide a firm evidence for the CDW-induced reconstruction of the original cylindrical Fermi surface. The α-oscillations of the interlayer magnetoresistance exhibit an anomalous phase inversion in the CDW state, whereas the de Haas -van Alphen signal maintains the normal phase. We argue that the anomaly may be attributed to the magneticbreakdown origin of the α-oscillations in the CDW state. A theoretical model illustrating the possibility of a phase inversion in the oscillating interlayer conductivity in the presence of a spatially fluctuating magnetic breakdown gap is proposed.

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High-field magnetotransport and Fermi-surface topology in the novel quasi-two-dimensional organic conductor bis(ethylenedithiolo)tetrathiafulvalenium mercuric postassium thiocyanate, (BEDT-TTF)2KHg(SCN

Cited by 156 publications

References 8 publications

Development of Conductive Organic Molecular Assemblies: Organic Metals, Superconductors, and Exotic Functional Materials

Development of Conductive Organic Molecular Assemblies: Organic Metals, Superconductors, and Exotic Functional Materials

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

Magnetic quantum oscillations in the charge-density-wave state of the organic metals α-(BEDT-TTF)2MHg(SCN)4 with M = K and Tl

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