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The $\kappa$-(ET)$_2$X layered conductors (where ET stands for BEDT-TTF) are studied within the dimer model as a function of the diagonal hopping $t^\prime$ and Hubbard repulsion $U$. Antiferromagnetism and d-wave superconductivity are…

Superconductivity · Physics 2015-06-25 P. Sahebsara , D. Senechal

We present experimental evidence for a hitherto unconfirmed type of angle-dependent magnetoresistance oscillation caused by magnetic breakdown. The effect was observed in the organic superconductor kappa-(BEDT-TTF)$_2$Cu(NCS)$_2$ using…

Strongly Correlated Electrons · Physics 2009-11-13 A. F. Bangura , P. A. Goddard , J. Singleton , S. W. Tozer , A. I. Coldea , A. Ardavan , R. D. McDonald , S. J. Blundell , J. A. Schlueter

Layered transition metal dichalcogenides (TMDs) are commonly classified as quasi-two-dimensional materials, meaning that their electronic structure closely resembles that of an individual layer, which results in resistivity anisotropies…

We have investigated in frame of the quantum transport theory the magnetic quantum oscillations of the longitudinal magnetoresistance $\rho_{zz}$ in quasi two-dimensional metals for a magnetic field perpendicular to the layers. Giant…

Condensed Matter · Physics 2016-08-31 T. Champel , V. P. Mineev

The two-dimensional organic conductor $\alpha$-(BEDT-TTF)$_2$I$_3$ undergoes a metal-insulator transition at $T_{\rm CO}=135$ K due to electronic charge ordering. We have conducted time-resolved investigations of its electronic properties…

Strongly Correlated Electrons · Physics 2016-06-15 Tobias Peterseim , Tomislav Ivek , Dieter Schweitzer , Martin Dressel

$\alpha$-(BEDT-TTF)$_2$I$_3$ is a prominent example of charge ordering among organic conductors. In this work we explore the details of transport within the charge-ordered as well as semimetallic phase at ambient pressure. In the…

DC and finite frequency transport measurements of thin films of amorphous indium oxide that were driven through the critical point of superconductor-insulator transition by the application of perpendicular magnetic field are presented. The…

Superconductivity · Physics 2015-03-19 G. Sambandamurthy , N. Peter Armitage

Motivated by recent experimental work on magnetic properties of Si-MOSFETs, we report a calculation of magnetisation and susceptibility of electrons in an inversion layer, taking into account the co-ordinate dependence of electron wave…

Mesoscale and Nanoscale Physics · Physics 2015-12-10 D. I. Golosov

This chapter reviews recent experimental studies of a novel open-orbit magnetic resonance phenomenon. The technique involves measurement of angle-dependent microwave magneto-conductivity and is, thus, closely related to the cyclotron…

Superconductivity · Physics 2009-09-29 Stephen Hill , Susumu Takahashi

There exist strong experimental evidences for the dimensional cross-over from two to three dimensions as \lan compounds are overdoped. In this paper we describe the dimensional cross-over of the layered correlated metal in the gauge theory…

Condensed Matter · Physics 2009-10-28 H. C. Lee , P. B. Wiegmann

We report on generic trends in the behavior of the interlayer penetration depth $\lambda_c$ of several different classes of quasi two-dimensional superconductors including cuprates, Sr$_2$RuO$_4$, transition metal dichalcogenides and…

Superconductivity · Physics 2015-06-24 S. V. Dordevic , E. J. Singley , D. N. Basov , J. H. Kim , M. B. Maple , E. Bucher

The magnetic field dependence of the resistance of (BEDT-TTF)$_2$MHg(SCN)$_4$[M=K,Rb,Tl] in the density-wave phase is explained in terms of a simple model involving magnetic breakdown and a reconstructed Fermi surface. The theory is…

The criterion for the maximum incoherent conductivity $\sigma_{c,max}$ in the anisotropic system is shown to be $\sigma_{c,max} \sigma_{ab}=C (e^2/h)^2 n_{2D}$, where $n_{2D}$ is the two-dimensional electron density, and $C$ is a numerical…

Strongly Correlated Electrons · Physics 2007-05-23 Misha Turlakov

We investigated the effect of magnetic field on the highly correlated metal near the Mott transition in the quasi-two-dimensional layered organic conductor, $\kappa$-(BEDT-TTF)$_{2}$Cu[N(CN)$_{2}$]Cl, by the resistance measurements under…

Strongly Correlated Electrons · Physics 2009-11-10 F. Kagawa , T. Itou , K. Miyagawa , K. Kanoda

Field-induced antiferromagnetic (AF) fluctuations and magnetization are observed above the (zero-field) ordering temperature, T_N = 23 K by electron spin resonance in kappa-(BEDT-TTF)_2Cu[N(CN)_2]Cl, a quasi two-dimensional antiferromagnet…

Strongly Correlated Electrons · Physics 2015-06-11 Ágnes Antal , Titusz Fehér , Bálint Náfrádi , László Forró , András Jánossy

We investigate the layer resolved magnetotransport properties of the antiferromagnetic/paramagnetic superlattices based on one band half-filled Hubbard model in three dimensions. In our set up the correlated layers (with on-site repulsion…

Strongly Correlated Electrons · Physics 2024-07-11 Sandip Halder , Sourav Chakraborty , Kalpataru Pradhan

Frustrated Mott insulators such as transition metal dichalcogenides present an ideal platform for the experimental realization of externally tuned insulator-metal transition. In this paper, we present the first nonperturbative numerical…

Strongly Correlated Electrons · Physics 2022-06-14 Madhuparna Karmakar , Nyayabanta Swain

We present a detailed discussion of both theoretical and experimental evidence in favour of the existence of states of ``confined coherence'' in metals of sufficiently high anisotropy and with sufficiently strong correlations. The defining…

Strongly Correlated Electrons · Physics 2009-10-30 David Clarke , Steven Strong

It is generally believed that superconductivity and magnetism are two antagonistic long-range phenomena. However, as it was preliminarily highlighted in D. Stamopoulos et al. [Phys. Rev. B 75, 014501 (2007)] and extensively studied in this…

Superconductivity · Physics 2009-11-13 D. Stamopoulos , E. Manios , M. Pissas

Numerous unconventional superconductors such as cuprates, heavy-fermions, and twisted-bilayer graphene exhibit incoherent metallic transport above the superconducting critical temperature. This phenomenon cannot be described with…

Strongly Correlated Electrons · Physics 2026-05-06 Aaron Kleger , Nikolay Gnezdilov , Rufus Boyack