Publications related to Spin structure

Field-controlled magnetic order in the quantum spin-ladder system (Hpip)2CuBr4

Henrik Moodysson Rønnow, Bruce Normand, Christian Rüegg, Joël Mesot, Pierre Bouillot, Thierry Giamarchi, Daniel Biner

Neutron diffraction is used to investigate the field-induced, antiferromagnetically ordered state in the two-leg spin-ladder material (Hpip)(2)CuBr4. This "classical" phase, a consequence of weak interladder coupling, is nevertheless highly unconventional: ...

2009

Lq,p-cohomology of Riemannian manifolds and simplicial complexes of bounded geometry

Stephen Ducret

The Lq,p-cohomology of a Riemannian manifold (M, g) is defined to be the quotient of closed Lp-forms, modulo the exact forms which are derivatives of Lq-forms, where the measure considered comes from the Riemannian structure. The Lq,p-cohomology of a simpl ...

EPFL2009

Diffusion Spectrum Imaging Shows the Structural Basis of Functional Cerebellar Circuits in the Human Cerebellum In Vivo

Reto Meuli, Cristina Granziera, Nouchine Hadjikhani, Van Jay Wedeen

Background: The cerebellum is a complex structure that can be affected by several congenital and acquired diseases leading to alteration of its function and neuronal circuits. Identifying the structural bases of cerebellar neuronal networks in humans in vi ...

2009

Fatigue Testing and Analysis of an Orthotropic Bridge Welded Detail Using Structural Hot Spot Stress Method

Farshid Zamiri Akhlaghi

At present, more powerful tools for numerical modelling and structural analysis are available for the use in fatigue design and assessment of complex structures. Taking advantage of these tools, structural hot spot stress approach (SHSS) can predict the fa ...

CETIM2009

Validating the model of a (3+1)-dimensional incommensurately modulated structure as generator of a family of compounds for the Eu2(MoO4)3 scheelite structure

Gervais Chapuis, Alla Arakcheeva, Philip Pattison, Jorge Martinez Garcia

The previously proposed model postulating that the incommensurately modulated KNd(MoO

_4

)

_2

structure can act as a generator of the scheelite family members is validated here by refining the crystal structure of europium molybdate, Eu

_2

(MoO

_4

)

_3

. ...

2009

Global 2D modeling of minority and majority substrate coupled currents

Maher Kayal, Jean-Michel Sallese, François Krummenacher, Marc Pastre, Fabrizio Lo Conte

This paper presents a modeling strategy to simulate 2D propagation of electrical perturbations induced by direct biasing of substrate junctions. Identifying parasitic substrate devices such as bipolar transistors reaches rapidly its limit when multiple cur ...

2009

Learning flexible sensori-motor mappings in a complex network

Eleni Vasilaki, Walter Senn

Given the complex structure of the brain, how can synaptic plasticity explain the learning and forgetting of associations when these are continuously changing? We address this question by studying different reinforcement learning rules in a multilayer netw ...

Springer Verlag2009

Low-Density Codes Based on Chaotic Systems for Low-Density Codes Based on Chaotic Systems for Simple Encoding

Martin Hasler, Slobodan Kozic

This paper proposes a new class of low-density generator-matrix codes (LDGM) based on chaotic dynamical systems. The codes are designed by controlling symbolic dynamics and using linear convolutional codes. Analyzing the complex structure of chaotic system ...

2009

Silane depletion dependent ion bombardment and material quality of microcrystalline silicon deposited by VHF-PECVD

Christophe Ballif, Grégory Bugnon, Julien Claude Bailat, Andrea Feltrin

Microcrystalline silicon is a composite material embedding silicon nanocrystals in an amorphous matrix [1]. It has attracted much research efforts in the photovoltaic domain [2], because of its potential for integration in a tandem cell concept as bottom c ...

2009

Effect of exchange coupling on coherently controlled spin-dependent transition rates

Clotaire Michel

The effect of exchange interactions within spin pairs on spin-dependent transport and recombination rates through localized states in semiconductors during coherent electron-spin resonant excitation is studied theoretically. It is shown that for identical ...

2008

Spin structure

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Field-controlled magnetic order in the quantum spin-ladder system (Hpip)2CuBr4

Lq,p-cohomology of Riemannian manifolds and simplicial complexes of bounded geometry

Diffusion Spectrum Imaging Shows the Structural Basis of Functional Cerebellar Circuits in the Human Cerebellum In Vivo

Fatigue Testing and Analysis of an Orthotropic Bridge Welded Detail Using Structural Hot Spot Stress Method

Validating the model of a (3+1)-dimensional incommensurately modulated structure as generator of a family of compounds for the Eu2(MoO4)3 scheelite structure

Global 2D modeling of minority and majority substrate coupled currents

Learning flexible sensori-motor mappings in a complex network

Low-Density Codes Based on Chaotic Systems for Low-Density Codes Based on Chaotic Systems for Simple Encoding

Silane depletion dependent ion bombardment and material quality of microcrystalline silicon deposited by VHF-PECVD

Effect of exchange coupling on coherently controlled spin-dependent transition rates

Diffusion Spectrum Imaging Shows the Structural Basis of Functional Cerebellar Circuits in the Human Cerebellum In Vivo

Fatigue Testing and Analysis of an Orthotropic Bridge Welded Detail Using Structural Hot Spot Stress Method

Field-controlled magnetic order in the quantum spin-ladder system (Hpip)2CuBr4

Lq,p-cohomology of Riemannian manifolds and simplicial complexes of bounded geometry

Global 2D modeling of minority and majority substrate coupled currents

Validating the model of a (3+1)-dimensional incommensurately modulated structure as generator of a family of compounds for the Eu2(MoO4)3 scheelite structure

Learning flexible sensori-motor mappings in a complex network

Low-Density Codes Based on Chaotic Systems for Low-Density Codes Based on Chaotic Systems for Simple Encoding

Silane depletion dependent ion bombardment and material quality of microcrystalline silicon deposited by VHF-PECVD

Effect of exchange coupling on coherently controlled spin-dependent transition rates