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Bias and temperature dependence of the 0.7 conductance anomaly in Quantum Point Contacts
A. Kristensen, H. Bruus, A. E. Hansen +8
The 0.7 (2e^2/h) conductance anomaly is studied in strongly confined, etched GaAs/GaAlAs quantum point contacts, by measuring the differential conductance as a function of source-d…
From mesoscopic magnetism to the anomalous 0.7 conductance plateau
Henrik Bruus, Vadim V. Cheianov, Karsten Flensberg
We present a simple phenomenological model which offers a unifying interpretation of the experimental observations on the 0.7 conductance anomaly of quantum point contacts. The mod…
The magnetic neutron scattering resonance of high-T_c superconductors in external magnetic fields: an SO(5) study
Niels Asger Mortensen, H. M. Ronnow, Henrik Bruus +1
The magnetic resonance at 41 meV observed in neutron scattering studies of Y Ba_2 Cu_3 O_7 holds a key position in the understanding of high-T_c superconductivity. Within the SO(5)…