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8 papers · 2 filters
Renormalized Landau Levels and Particle-Hole Symmetry in Graphene
Yafis Barlas, Wei-Cheng Lee, Kentato Nomura +1
In this proceedings paper we report on a calculation of graphene's Landau levels in a magnetic field. Our calculations are based on a self-consistent Hartree-Fock approximation for…
Entrapment of magnetic micro-crystals for on-chip electron spin resonance studies
N. Groll, S. Bertaina, M. Pati +2
On-chip Electron Spin Resonance (ESR) of magnetic molecules requires the ability to precisely position nanosized samples in antinodes of the electro-magnetic field for maximal magn…
Non-Fermi Liquid behavior in Neutral Bilayer Graphene
Yafis Barlas, Kun Yang
We calculate the density-density response function and electron self-energy for undoped bilayer graphene, within the Random Phase Approximation (RPA). We show that the quasiparticl…
A Caveat for Single-Molecule Magnetism: Non-linear Arrhenius Plots
Christos Lampropoulos, Stephen O. Hill, George Christou
The magnetization relaxation of Mn12 single-molecule magnets (SMMs) does not follow a simple Arrhenius law, even for data collected at low frequencies (5-1500 Hz) due to contributi…
Manifestation of Spin Selection Rules on the Quantum Tunneling of Magnetization in a Single Molecule Magnet
J. J. Henderson, C. Koo, P. L. Feng +5
We present low temperature magnetometry measurements on a new Mn3 single-molecule magnet (SMM) in which the quantum tunneling of magnetization (QTM) displays clear evidence for qua…
The enigma of the nu=0 quantum Hall effect in graphene
S. Das Sarma, Kun Yang
We apply Laughlin's gauge argument to analyze the quantum Hall effect observed in graphene when the Fermi energy lies near the Dirac point, and conclude that this necessarily…