A computer calculation of Fermi surface cross sections using the empty lattice model

1968 ◽  
Vol 46 (12) ◽  
pp. 1403-1412 ◽  
Author(s):  
Roger Taylor
Keyword(s):  
Fermi Surface ◽  
Computer Program ◽  
Cross Sections ◽  
Lattice Model ◽  
Computer Calculation ◽  
Correct Interpretation ◽  
Fermi Surfaces ◽  
The One ◽  
Computer Output

A computer program has been written in Fortran IV to calculate the areas of Fermi surface cross sections using the empty lattice model often referred to as the one-OPW model. The program employs the Harrison (1960) construction and will work for any structure with any Fermi radius. For hexagonal structures both the single and double zone schemes may be employed. Any plane may be selected by the user. This plane may be rotated a specified number of times about two axes and also shifted along one of the axes in order to search for extremal orbits along this axis. In applying the program to complicated Fermi surfaces a qualitative sketch of the surface may be necessary for the correct interpretation of the computer output. A copy of the deck of cards comprising the program may be obtained from the Depository of Unpublished Data.

scholarly journals Fermi surface of the one-dimensional Kondo-lattice model

1996 ◽  
Vol 54 (17) ◽  
pp. 12212-12215 ◽  
Author(s):  
S. Moukouri ◽  
L. G. Caron
Keyword(s):  
Fermi Surface ◽  
Lattice Model ◽  
Kondo Lattice ◽  
One Dimensional ◽  
Kondo Lattice Model ◽  
The One

scholarly journals Large Fermi surface of the one-dimensional Kondo lattice model

1994 ◽  
Vol 50 (1) ◽  
pp. 612-615 ◽  
Author(s):  
Kazuo Ueda ◽  
Tomotoshi Nishino ◽  
Hirokazu Tsunetsugu
Keyword(s):  
Fermi Surface ◽  
Lattice Model ◽  
Kondo Lattice ◽  
One Dimensional ◽  
Kondo Lattice Model ◽  
The One

scholarly journals Two-dimensional Fermi surfaces in Kondo insulator SmB6

Science ◽  
2014 ◽  
Vol 346 (6214) ◽  
pp. 1208-1212 ◽  
Author(s):  
G. Li ◽  
Z. Xiang ◽  
F. Yu ◽  
T. Asaba ◽  
B. Lawson ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Cross Sections ◽  
Surface Topology ◽  
Surface Conductance ◽  
Two Dimensional ◽  
Kondo Insulator ◽  
Fermi Surfaces ◽  
Samarium Hexaboride ◽  
Surface Plane ◽  
The Magnetic Field

In the Kondo insulator samarium hexaboride (SmB6), strong correlation and band hybridization lead to an insulating gap and a diverging resistance at low temperature. The resistance divergence ends at about 3 kelvin, a behavior that may arise from surface conductance. We used torque magnetometry to resolve the Fermi surface topology in this material. The observed oscillation patterns reveal two Fermi surfaces on the (100) surface plane and one Fermi surface on the (101) surface plane. The measured Fermi surface cross sections scale as the inverse cosine function of the magnetic field tilt angles, which demonstrates the two-dimensional nature of the conducting electronic states of SmB6.

Large Fermi surface of the one-dimensional Kondo lattice model observed by Friedel oscillations

1997 ◽  
Vol 230-232 ◽  
pp. 1024-1027 ◽  
Author(s):  
Naokazu Shibata ◽  
Kazuo Ueda ◽  
Tomotoshi Nishino ◽  
Chikara Ishii
Keyword(s):  
Fermi Surface ◽  
Lattice Model ◽  
Kondo Lattice ◽  
One Dimensional ◽  
Friedel Oscillations ◽  
Kondo Lattice Model ◽  
The One

scholarly journals Large Fermi surface of the one-dimensional Kondo-lattice model

1994 ◽  
Vol 199-200 ◽  
pp. 191-194 ◽  
Author(s):  
Kazuo Ueda ◽  
Tomotoshi Nishino ◽  
Hirokazu Tsunetsugu
Keyword(s):  
Fermi Surface ◽  
Lattice Model ◽  
Kondo Lattice ◽  
One Dimensional ◽  
Kondo Lattice Model ◽  
The One

scholarly journals Method for assessment of matching of total ankle joint endoprostheses based on CT data

2020 ◽  
Vol 6 (3) ◽  
pp. 396-397
Author(s):  
Heiner Martin ◽  
Josephine Wittmüß ◽  
Thomas Mittlmeier ◽  
Niels Grabow
Keyword(s):  
Cross Sections ◽  
Spline Functions ◽  
Moments Of Inertia ◽  
Cad System ◽  
Principal Moments Of Inertia ◽  
Principal Axes ◽  
Ct Data ◽  
The One ◽  
Relative Differences ◽  
Systemic Design

AbstractThe investigation of matching of endoprosthesis tibial components to the bone cross section is of interest for the manufacturer as well as for the surgeon. On the one hand, a systemic design of the prosthesis and the assortment is possible, on the other hand, a better matching implantation is enabled on the basis of experience of this study. CT sections were segmented manually using a CAD system and fitted by spline functions, then superseded with cross sections of the tibial component of a modified Hintermann H3 prosthesis. The principal moments of inertia, the direction of the principal axes and the area of the section were evaluated. Based on the relative differences of the principal moments of inertia, recommendations for application of the different prosthesis size and its selection with the surgery can be made.

An unified approach to inelastic light scattering in Keldysh–Schwinger functional integral formalism

2015 ◽  
Vol 29 (07) ◽  
pp. 1550040 ◽  
Author(s):  
Hyun Cheol Lee
Keyword(s):  
Light Scattering ◽  
Cross Sections ◽  
Golden Rule ◽  
Functional Integral ◽  
Integral Formalism ◽  
Inelastic Light Scattering ◽  
Scattering Geometry ◽  
The One ◽  
Resonant Part ◽  
Functional Integral Formalism

We propose a theoretical framework which can treat the nonresonant and the resonant inelastic light scattering on an equal footing in the form of correlation function, employing Keldysh–Schwinger functional integral formalism. The interference between the nonresonant and the resonant process can be also incorporated in this framework. This approach is applied to the magnetic Raman scattering of two-dimensional antiferromagnetic insulators. The entire set of the scattering cross-sections are obtained at finite temperature, the result for the resonant part agrees with the one obtained by the conventional Fermi golden rule at zero temperature. The interference contribution is shown to be very sensitive to the scattering geometry and the band structure.

Theoretical studies on the one- and two-photon absorption of tetrabenzoporphyrins and phthalocyanines

2004 ◽  
Vol 82 (1) ◽  
pp. 19-26 ◽  
Author(s):  
Xin Zhou ◽  
Ai-Min Ren ◽  
Ji-Kang Feng ◽  
Xiao-Juan Liu
Keyword(s):  
Dipole Moment ◽  
Cross Sections ◽  
Density Functional ◽  
Transition Dipole Moment ◽  
Photon Absorption ◽  
Transition Dipole ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Order Of Magnitude ◽  
The One

The one-photon absorption (OPA) properties of tetrabenzoporphyrins (TBPs) and phthalocyanines (Pcs) were studied using the semiempirical ZINDO method and time-dependent density functional theory (TDDFT), respectively. The compared results confirmed that the semiempirical ZINDO method was reasonably reliable when calculating the OPA of tetrabenzoporphyrins and phthalocyanines. On the basis of the OPA properties obtained from the ZINDO method, two-photon absorption (TPA) properties of two series of molecules were investigated, using ZINDO and sum-over-states (SOS) methods. The results showed that the TPA cross-sections of all molecules were in the range of 220.6 × 10–50 – 345.9 × 10–50 cm4·s·photon–1, which were in the same order of magnitude as the values reported in the literature. The relatively larger δ(ω) value for Pcs with respect to that for corresponding TBPs originates from larger intramolecular charge transfer, which can be characterized by the difference of dipole moment between S0 and S1 and the transition dipole moment between S1 and S5.Key words: two-photon absorption, ZINDO, sum-over-states, tetrabenzoporphyrin, phthalocyanines.

Sign in / Sign up

Export Citation Format

Share Document