TY - JOUR
T1 - Fractional Entropy of Multichannel Kondo Systems from Conductance-Charge Relations
AU - Han, Cheolhee
AU - Iftikhar, Z.
AU - Kleeorin, Yaakov
AU - Anthore, A.
AU - Pierre, F.
AU - Meir, Yigal
AU - Mitchell, Andrew K.
AU - Sela, Eran
N1 - Publisher Copyright:
© 2022 American Physical Society.
PY - 2022/4/8
Y1 - 2022/4/8
N2 - Fractional entropy is a signature of nonlocal degrees of freedom, such as Majorana zero modes or more exotic non-Abelian anyons. Although direct experimental measurements remain challenging, Maxwell relations provide an indirect route to the entropy through charge measurements. Here we consider multichannel charge-Kondo systems, which are predicted to host exotic quasiparticles due to a frustration of Kondo screening at low temperatures. In the absence of experimental data for the charge occupation, we derive relations connecting the latter to the conductance, for which experimental results have recently been obtained. Our analysis indicates that Majorana and Fibonacci anyon quasiparticles are well developed in existing two-and three-channel charge-Kondo devices, and that their characteristic kBlog2 and kBlog[(1+5)/2] entropies are experimentally measurable.
AB - Fractional entropy is a signature of nonlocal degrees of freedom, such as Majorana zero modes or more exotic non-Abelian anyons. Although direct experimental measurements remain challenging, Maxwell relations provide an indirect route to the entropy through charge measurements. Here we consider multichannel charge-Kondo systems, which are predicted to host exotic quasiparticles due to a frustration of Kondo screening at low temperatures. In the absence of experimental data for the charge occupation, we derive relations connecting the latter to the conductance, for which experimental results have recently been obtained. Our analysis indicates that Majorana and Fibonacci anyon quasiparticles are well developed in existing two-and three-channel charge-Kondo devices, and that their characteristic kBlog2 and kBlog[(1+5)/2] entropies are experimentally measurable.
UR - http://www.scopus.com/inward/record.url?scp=85128769941&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.128.146803
DO - 10.1103/PhysRevLett.128.146803
M3 - Article
C2 - 35476492
AN - SCOPUS:85128769941
SN - 0031-9007
VL - 128
JO - Physical Review Letters
JF - Physical Review Letters
IS - 14
M1 - 146803
ER -