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Graphene, a two-dimensional (2D) material with unique electronic properties, appears to be an ideal object for the application of surface-science methods. Among them, a family of scanning probe microscopy methods (STM, AFM, KPFM) and the…

Materials Science · Physics 2015-03-30 Yuriy Dedkov , Elena Voloshina , Mikhail Fonin

We have measured details of the quasi one-dimensional Fermi-surface sections in the organic superconductor kappa-(BEDT-TTF)_2 Cu(NCS)_2 and its deuterated analogue using angle-dependent millimetre-wave techniques. There are significant…

Strongly Correlated Electrons · Physics 2009-11-07 R. S. Edwards , A. Narduzzo , J. Singleton , A. Ardavan , J. A. Schlueter

Investigations of the Fermi surface via the electron momentum distribution reconstructed from either angular correlation of annihilation radiation (or Compton scattering) experimental spectra are presented. The basis of these experiments…

Other Condensed Matter · Physics 2017-05-11 G. Kontrym-Sznajd

In this paper we present a theoretical analysis of the effect of local geometrical structure of the Fermi surface on the surface impedance of a metal at the anomalous skin effect. We show that when the Fermi surface includes nearly…

Materials Science · Physics 2007-05-23 Natalya A. Zimbovskaya

We propose a mechanism that helps stabilize a superconducting state with broken time-reversal symmetry, which was predicted to realize in a d-wave superconducting film [A. B. Vorontsov, Phys. Rev. Lett. 102, 177001 (2009)]. In this…

Superconductivity · Physics 2015-04-01 Nobumi Miyawaki , Seiji Higashitani

Recent experiments have introduced a new concept for analyzing the photoemission spectra of correlated electrons -- the remnant Fermi surface (rFs), which can be measured even in systems which lack a conventional Fermi surface. Here, we…

Superconductivity · Physics 2009-10-31 C. Kusko , R. S. Markiewicz

Noncentrosymmetric metals such as Li$_2$(Pd$_{1-x}$Pt$_x$)$_3$B have different Fermi surface topology below and above the band touching point where spin-degeneracy is not lifted by the spin-orbit coupling. We investigate thermoelectric and…

Mesoscale and Nanoscale Physics · Physics 2019-07-17 Sonu Verma , Tutul Biswas , Tarun Kanti Ghosh

The role of "Fermi arc" surface-quasiparticle states in "topological metals" (where some Fermi surface sheets have non-zero Chern number) is examined. They act as "Fermi-level plumbing" conduits that transfer quasiparticles among groups of…

Strongly Correlated Electrons · Physics 2014-01-03 F. D. M. Haldane

A Fermi surface coupled to a scalar field can be described in a $1/N$ expansion by choosing the fermion-scalar Yukawa coupling to be random in the $N$-dimensional flavor space, but invariant under translations. We compute the conductivity…

Strongly Correlated Electrons · Physics 2023-07-20 Haoyu Guo , Aavishkar A. Patel , Ilya Esterlis , Subir Sachdev

Superconductivity or metallic state may coexist with density wave ordering at imperfect nesting of the Fermi surface. In addition to the macroscopic spatial phase separation, there are, at least, two possible microscopic structures of such…

Strongly Correlated Electrons · Physics 2015-06-23 P. D. Grigoriev , S. S. Kostenko

We report extensive measurements of quantum oscillations in the normal state of the Fe-based superconductor LaFePO, (Tc ~ 6 K) using low temperature torque magnetometry and transport in high static magnetic fields (45 T). We find that the…

We used high resolution angle-resolved photoemission spectroscopy to reveal the Fermi surface and key transport parameters of the metallic state of the layered Colossal Magnetoresistive (CMR) oxide La1.2Sr1.8Mn2O7. With these parameters the…

Strongly Correlated Electrons · Physics 2009-11-07 Y. -D. Chuang , A. D. Gromko , D. S. Dessau , T. Kimura , Y. Tokura

In this paper we present detailed theoretical analysis of the frequency and/or magnetic field dependence of the surface impedance of a metal at the anomalous skin effect. We calculate the surface impedance in the presence of a magnetic…

Materials Science · Physics 2007-05-23 Natalya A. Zimbovskaya

Based on density functional calculations, the relationship between magnetism or superconductivity and electronic states around Fermi level were derived, and the location of the Fermi level in nonmagnetic "form" of Laves-phase compounds is…

Materials Science · Physics 2007-05-23 Xing-Qiu Chen , Shu-Lan Wang , Xue-Yong Ding , Xiang-Xun Xue

The nature of Fermi surface defines the physical properties of conductors and many physical phenomena can be traced to its shape. Although the recent discovery of a current-dependent nonlinear magnetoresistance in spin-polarized…

We review the theory of oscillatory magnetic coupling in Metallic Multilayers across alloy spacers. We illustrate the relationship between the frequencies of the oscillations and the extremal caliper vectors of the Fermi surface of the…

Materials Science · Physics 2007-05-23 B. L. Györffy , N. N. Lathiotakis

Nanoscale particles embedded in a metallic matrix are of considerable interest as a route towards identifying and tailoring material properties. We present a detailed investigation of the electronic structure, and in particular the Fermi…

Materials Science · Physics 2011-04-12 J. Laverock , S. B. Dugdale , M. A. Alam , M. V. Roussenova , J. Wensley , J. Kwiatkowska , N. Shiotani

Fermi arcs are disconnected contour of Fermi surface, which can be observed in the pseudo-gap phase of high temperature superconductors. Aiming to understand this pseudo-gap phenomena, we study a holographic Fermionic system coupled with a…

High Energy Physics - Theory · Physics 2019-07-11 Sayan Chakrabarti , Debaprasad Maity , Wadbor Wahlang

We propose a quantum oscillation experiment by which the rotation of an underdoped YBa2Cu3O6+x sample about two different axes with respect to the orientation of the magnetic field can be used to infer the shape of the in-plane…

Superconductivity · Physics 2015-05-13 N. Harrison , R. D. McDonald

Extremely large non-saturating magnetoresistance has recently been reported for a large number of both topologically trivial and non-trivial materials. Different mechanisms have been proposed to explain the observed magnetotransport…

Materials Science · Physics 2019-01-23 Sheng Nan Zhang , Quan Sheng Wu , Yi Liu , Oleg V. Yazyev