impurity chains
for electric guitar

Bekah Simms
Composer
Bekah Simms
Composition Date: 2015
Duration: 00:12:00
Genre: Strings (plectral), Solo, Guitar / Lute, Solo

Instrumentation:

Instrumentation Set Number 1:
  • 1 x Guitar
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Programme Note:
There are written passages that, perhaps, have a profound meaning if only one could understand them. You know the language, you recognize the words, but the meaning is lost or skewered. Only fragments show themselves as having meaning: familiarity alongside something else.“We study odd-membered chains of spin- ½ impurities, with each end connected to its own metallic lead. For antiferromagnetic exchange coupling, universal two-channel Kondo (2CK) physics is shown to arise at low energies. Two overscreening mechanisms are found to occur depending on coupling strength, with distinct signatures in physical properties. For strong interimpurity coupling, a residual chain spin-12 moment experiences a renormalized effective coupling to the leads, while in the weak-coupling regime, Kondo coupling is mediated via incipient single-channel Kondo singlet formation. We also investigate models in which the leads are tunnel-coupled to the impurity chain, permitting variable dot filling under applied gate voltages.”-Andrew K. Mitchell, David E. Logan, and H. R. KrishnamurthyPhys. Rev. B 84, 035119 – Published 25 July 2011

Premiere Information:
29 October 2015, Array Space, Toronto, Ontario
Trevor Babb; guitar

CATALOGUE INFO:

  • Call Number:
  • MI 4111 S5925im
  • Genre:
  • Strings (plectral), Solo, Guitar / Lute, Solo
  • Date of Acquisition:
  • February 4, 2016
  • Type:
  • Print-music, Published by CMC
  • Physical Description:
  • 1 score (14 p. ) ;
    14 Pages
    Height: 30 cm
    Width: 23 cm
  • Additional Information:
  • Commissioned by Trevor Babb
    Inspired by texts written by Andrew K. Mitchell, David E. Logan, and H. R. Krishnamurthy
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