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19972023
most citedSpatially Resolved Raman Spectroscopy of Single- and Few-Layer Graphene

2.5k citations

Showing 2014Show all

16 papers · 1 filter

cond-mat.supr-con2014★ 13 cited

Camelback-shaped band reconciles heavy electron behavior with weak electronic Coulomb correlations in superconducting TlNi2Se2

N. Xu, C. E. Matt, P. Richard +16

Using high-resolution photoemission spectroscopy and first-principles calculations, we characterize superconducting TlNiSe as a material with weak electronic Coulomb correl…

cond-mat.str-el2014★ 15 cited

High-field magnetic resonance of spinons and magnons in a triangular lattice S=1/2 antiferromagnet Cs2CuCl4

A. I. Smirnov, T. A. Soldatov, K. Yu. Povarov +1

The electron spin resonance doublet indicating the width of the two spinon continuum in a spin-1/2 triangular-lattice Heisenberg antiferromagnet Cs2CuCl4 was studied in high magnet…

cond-mat.str-el2014★ 24 cited

On the relation between the 0.7-anomaly and the Kondo effect: Geometric Crossover between a Quantum Point Contact and a Kondo Quantum Dot

Jan Heyder, Florian Bauer, Enrico Schubert +5

Quantum point contacts (QPCs) and quantum dots (QDs), two elementary building blocks of semiconducting nanodevices, both exhibit famously anomalous conductance features: the 0.7-an…

cond-mat.supr-con2014★ 14 cited

Anomalous High-Energy Electronic Interaction in Iron-Based Superconductor

D. V. Evtushinsky, A. N. Yaresko, V. B. Zabolotnyy +11

Strong electron interactions in solids increase effective mass, and shrink the electronic bands [1]. One of the most unique and robust experimental facts about iron-based supercond…

cond-mat.mes-hall2014★ 18 cited

Scanning-gate-induced effects and spatial mapping of a cavity

R. Steinacher, A. A. Kozikov, C. Rössler +4

Tailored electrostatic potentials are the foundation of scanning gate microscopy. We present several aspects of the tip-induced potential on the two-dimensional electron gas. First…

cond-mat.supr-con2014★ 17 cited

Fermi-surface topological phase transition and horizontal order-parameter nodes in CaFeAs under pressure

R. S. Gonnelli, D. Daghero, M. Tortello +8

Iron-based compounds (IBS) display a surprising variety of superconducting properties that seems to arise from the strong sensitivity of these systems to tiny details of the lattic…

cond-mat.mes-hall2014★ 92 cited

Anomalous sequence of quantum Hall liquids revealing tunable Lifshitz transition in bilayer graphene

Anastasia Varlet, Dominik Bischoff, Pauline Simonet +6

Fermi surface topology plays an important role in determining the electronic properties of metals. In bulk metals, the Fermi energy is not easily tunable at the energy scale needed…

cond-mat.str-el2014★ 12 cited

Magnetic short and long range order in PbFeTaO

S. Chillal, S. N. Gvasaliya, D. Schroeter +5

PbFeTaO (PFT) belongs to the family of PbBBO which have inherent chemical disorder at the B-site. Due to this disorder, a complex magnet…

cond-mat.str-el2014★ 8 cited

The tunable quantum spin ladder Cu(Qnx)(ClBr)

K. Yu. Povarov, W. E. A. Lorenz, F. Xiao +3

We report magnetic, specific heat and ESR measurements on a series of spin ladder compounds Cu(Qnx)(ClBr). Down to K all the observables can be…

cond-mat.supr-con2014★ 10 cited

Quantitative imaging of flux vortices in type-II superconductor MgB using Cryo-Lorentz Transmission Electron Microscopy

M. J. G. Cottet, M. Cantoni, B. Mansart +5

Imaging of flux vortices in high quality MgB single crystals has been successfully performed in a commercial Field Emission Gun-based Transmission Electron Microscope. In Cryo-…

cond-mat.mes-hall2014★ 9 cited

Locally induced quantum interference in scanning gate experiments

A. A. Kozikov, R. Steinacher, C. Rössler +4

We present conductance measurements of a ballistic circular stadium influenced by a scanning gate. When the tip depletes the electron gas below, we observe very pronounced and regu…

cond-mat.mes-hall2014★ 18 cited

Dynamics of spin-flip photon-assisted tunneling

F. R. Braakman, J. Danon, L. R. Schreiber +2

We present time-resolved measurements of spin-flip photon-assisted tunneling and spin-flip relaxation in a doubly occupied double quantum dot. The photon-assisted excitation rate a…

cond-mat.mes-hall2014★ 12 cited

Resonant electron tunneling in a tip-controlled potential landscape

N. Pascher, F. Timpu, C. Rossler +4

By placing the biased tip of an atomic force microscope at a specific position above a semiconductor surface we can locally shape the potential landscape. Inducing a local repulsiv…

cond-mat.mes-hall2014★ 58 cited

Magnetoresistance Induced by Rare Strong Scatterers in a High Mobility 2DEG

L. Bockhorn, I. V. Gornyi, D. Schuh +3

We observe a strong negative magnetoresistance at non-quantizing magnetic fields in a high-mobility two-dimensional electron gas (2DEG). This strong negative magnetoresistance cons…

cond-mat.str-el2014★ 4 cited

Formation of gapless triplets in the bond-doped spin-gap antiferromagnet (CHN)(CuCl)

V. N. Glazkov, G. Skoblin, D. Hüvonen +2

We report results of an electron spin resonance (ESR) study of a spin-gap antiferromagnet (CHN)(CuCl) (nicknamed PHCC) with chlorine ions partially substitut…

cond-mat.mtrl-sci2014★ 95 cited

Approaching the Trap-Free Limit in Organic Single Crystal Field-Effect Transistors

Balthasar Blülle, Roger Häusermann, Bertram Batlogg

Crystalline organic semiconductors, bonded by weak van der Waals forces, exhibit macroscopic properties that are very similar to those of inorganic semiconductors. While there are…