Coulomb Blockade Peak Spacing Distribution: The Interplay of Temperature and Spin
Gonzalo Usaj, Harold U. Baranger
Abstract
We calculate the Coulomb Blockade peak spacing distribution at finite temperature using the recently introduced ``universal Hamiltonian'' to describe the e-e interactions. We show that the temperature effect is important even at kT~0.1Δ(Δis the single-particle mean level spacing). This sensitivity arises because: (1) exchange reduces the minimum energy of excitation from the ground state and (2) the entropic contribution depends on the change of the spin of the quantum dot. Including the leading corrections to the universal Hamiltonian yields results in quantitative agreement with the experiments. Surprisingly, temperature appears to be the most important effect.
Create a lesson
Related papers
Single anyons and anyon binding in a quantum Hall dot
Marco Valentini, Will Wang, Amir Shapour Mohammadi et al.
Spin textures at the Fermi surface of ferromagnets and associated torque
T. Valet, J. Li, H. Jaffrès et al.
Dark state preparation in a zero-field-split molecular triplet
Maria Pfahler, Andrea Donarini
Plasmon modes in triple-point semimetal, its quadratic cousin, and Hopf semimetal
Ipsita Mandal
Role of dissipation dilution in achieving high mechanical quality factors in van der Waals resonators
Lukas Schleicher, Leonard Geilen, Alexander Musta et al.
Zeeman spin quantum geometry and intrinsic gyrotropic spin current
Srijan Chatterjee, Tarun Kanti Ghosh