Publications and preprints

  1. Unsupervised Model Learning for Quantum Impurity Systems
    Jonas B. Rigo, Andrew K. Mitchell
    Preprint, arXiv:2401.13600 (2024)
    Keywords: Machine learning, effective models, downfolding, quantum impurities, quantum dots, molecular electronics

  2. Multiparameter critical quantum metrology with impurity probes
    George Mihailescu, Abolfazl Bayat, Steve Campbell, Andrew K. Mitchell
    Preprint, arXiv:2311.16931 (2023)
    Keywords: Metrology, quantum sensing, critical quantum metrology, thermometry, multiparameter estimation

  3. Many-body quantum interference route to the two-channel Kondo effect: Inverse design for molecular junctions
    Sudeshna Sen and Andrew K. Mitchell
    Preprint, arXiv:2310.14775 (2023)
    Keywords: Molecular electronics, quantum dots, inverse design, rational design, quantum interference, machine learning

  4. Kondo effect in twisted bilayer graphene
    A. S. Shankar, D. O. Oriekhov, Andrew K. Mitchell, Lars Fritz
    Phys. Rev. B 107, 245102 (2023)   //   Preprint, arXiv:2303.02492 (2023)
    Keywords: Twisted Bilayer Graphene, Magic Angle, Moire, twist materials, magnetic impurities, Kondo effect

  5. Quantum simulation of an exotic quantum critical point in a two-site charge Kondo circuit
    Winston Pouse, Lucas Peeters, Connie L. Hsueh, Ulf Gennser, Antonella Cavanna, Marc A. Kastner,
    Andrew K. Mitchell,* and David Goldhaber-Gordon*
    Nature Physics 19, 492 (2023)
    Keywords: Analogue quantum computation, quantum simulation, nanoelectronics, quantum dots, quantum criticality

  6. Z3 Parafermion in the double charge-Kondo model
    Deepak Karki, Edouard Boulat, Winston Pouse, David Goldhaber-Gordon, Andrew K Mitchell, Christophe Mora
    Phys. Rev. Lett. 130, 146201 (2023)   //   Preprint, arXiv:2210.04937 (2022)
    Keywords: Parafermions, quantum criticality, fractionalization, quantum dots

  7. Thermometry of strongly correlated fermionic quantum systems using impurity probes
    George Mihailescu, Steve Campbell, Andrew K. Mitchell
    Phys. Rev. A 107, 042614 (2023)   //  Preprint, arXiv:2212.09618 (2022)
    Keywords: Quantum metrology, quantum thermometry, impurities, quantum thermodynamics, quantum technologies

  8. Entropy measurement of a strongly coupled quantum dot
    Timothy Child,Owen Sheekey, Silvia Luscher, Saeed Fallahi, Geoffrey C. Gardner, Michael Manfra, Andrew Mitchell, Eran Sela, Yaakov Kleeorin, Yigal Meir, and Joshua Folk
    Phys. Rev. Lett. 129, 227702 (2022)   //   Preprint, arXiv:2110.14158
    Keywords: Entropy, quantum dots, Kondo effect

  9. Linear response quantum transport through interacting multi-orbital nanostructures
    Emma L. Minarelli, Jonas B. Rigo, Andrew K. Mitchell
    Preprint, arXiv:2209.01208 (2022)
    Keywords: quantum transport, thermoelectrics, quantum dots, molecular electronics

  10. Two-channel charge-Kondo physics in graphene quantum dots
    Emma L. Minarelli, Jonas B. Rigo, and Andrew K. Mitchell
    Nanomaterials 12, 1513 (2022)   //   Preprint, arXiv:2204.02226 (2022)
    Keywords: Graphene, Kondo, quantum dots

  11. Fractional Entropy of Multichannel Kondo Systems from Conductance-Charge Relations
    Cheolhee Han, Z. Iftikhar, Yaakov Kleeorin, A. Anthore, F. Pierre, Yigal Meir, Andrew K. Mitchell*, and Eran Sela*
    Phys. Rev. Lett. 128, 146803 (2022)   //   Preprint, arXiv:2108.12878
    Keywords: Entropy, quantum transport, nanoelectronics, quantum dots

  12. Automatic Differentiable Numerical Renormalization Group
    Jonas B. Rigo and Andrew K. Mitchell
    Phys. Rev. Research. 4, 013227 (2022)   //   Preprint, arXiv:2108.09575
    Keywords: Machine learning, differentiable programming, backpropagation, automatic differentiation, NRG, computational physics

  13. Monolithic Integration of Quantum Resonant Tunneling Gate on a 22nm FD-SOI CMOS Process
    Imran Bashir, Dirk Leipold, Elena Blokhina, Mike Asker, David Redmond, Ali Esmailiyan, Panagiotis Giounanlis, Hans Haenlein, Xuton Wu, Andrii Sokolov, Dennis Andrade-Miceli, Andrew K. Mitchell, Robert Bogdan Staszewski
    Preprint, arXiv:2112.04586 (2021)
    Keywords: CMOS, quantum computing, quantum dots

  14. SO(5) critical point in a spin-flavor Kondo device: Bosonization and refermionization solution
    Alon Liberman, Andrew K. Mitchell, Ian Affleck and Eran Sela
    Phys. Rev. B 103, 195131 (2021) -- Editor's Suggestion   //  Preprint arXiv:2103.10680
    Keywords: Nanoelectronics, quantum dot devices, non-Fermi liquids, NRG, bosonization

  15. SO(5) non-Fermi liquid in a Coulomb box device
    Andrew K. Mitchell, Alon Liberman, Eran Sela, Ian Affleck
    Phys. Rev. Lett. 126, 147702 (2021) -- Editor's Suggestion   //  Preprint arXiv:2009.12700
    Keywords: Nanoelectronics, quantum dot devices, non-Fermi liquids, NRG, CFT, bosonization

  16. Electric and heat transport in a charge two-channel Kondo device
    Gerwin A. R. van Dalum, Andrew K. Mitchell, Lars Fritz
    Phys. Rev. B 102, 205137 (2020)   //   arXiv:2007.07239
    Keywords: Nanoelectronics, quantum dot devices, thermoelectrics, quantum transport, non-Fermi liquid

  17. The Mott transition as a topological phase transition
    Sudeshna Sen, Patrick J. Wong, and Andrew K. Mitchell
    Phys. Rev. B 102, 081110(R) (2020) -- Rapid Communication & Editor's Suggestion   //   arXiv:2001.10526
    Keywords: strongly correlated materials, topology, quantum matter, Mott transition, DMFT, SSH

  18. Wiedemann-Franz law in a non-Fermi liquid and Majorana central charge: Thermoelectric transport in a two-channel Kondo system
    Gerwin A. R. van Dalum, Andrew K. Mitchell, and Lars Fritz
    Phys. Rev. B 102, 041111(R) (2020) -- Rapid Communication   //   arXiv:1912.04919
    Keywords: Thermoelectric quantum transport, non-Fermi liquids, charge Kondo, Wiedemann-Franz law

  19. Machine learning effective models for quantum systems
    Jonas B. Rigo and Andrew K. Mitchell
    Phys. Rev. B 101, 241105(R) (2020) -- Rapid Communication   //   arXiv:1910.11300
    Keywords: Machine learning, quantum boltzmann machines, effective models, molecular electronics

  20. CMOS Position-Based Charge Qubits: Theoretical Analysis of Control and Entanglement
    E. Blokhina, P. Giounanlis, Andrew K. Mitchell, D. Leipold, R. Staszewski
    IEEE Access, 8, 4182-4197 (2019)   //   arXiv:1912.11544
    Keywords: Charge Qubits, CMOS technology, quantum dots

  21. Enhanced photocatalysis and biomolecular sensing with field-activated nanotube-nanoparticle templates
    Sawsan Almohammed, Sebastian Tade Barwich, Andrew K. Mitchell, Brian J. Rodriguez, James H. Rice
    Nature Communications, 10, 2496 (2019) -- Open Access
    Keywords: quantum transport, nanostructure simulation, molecular electronics

  22. Multiband quasiparticle interference in the topological insulator Cu_x Bi_2 Te_3
    E. van Heumen, G.A.R. van Dalum, J. Kaas, N. de Jong, J. Oen, Y.K. Huang, Andrew K. Mitchell, L. Fritz, M.S. Golden
    arXiv:1110.4406
    Keywords: Topological Quantum Matter, Quasiparticle Interference, Topological Insulators

  23. Tunable Quantum Criticality and Super-ballistic Transport in a 'Charge' Kondo Circuit
    Z. Iftikhar, A. Anthore, Andrew K. Mitchell, F.D. Parmentier, U. Gennser, A. Ouerghi, A. Cavanna, C. Mora, P. Simon, F. Pierre
    Science, 360, 1315 (2018)   //   arXiv:1708.02542
    Keywords: Quantum nanoelectronics, quantum criticality, fractionalization, quantum transport, multi-channel Kondo, quantum dot

  24. Kondo blockade due to quantum interference in single-molecule junctions
    Andrew K. Mitchell, Kim G. L. Pedersen, Per Hedegaard, and Jens Paaske
    Nature Communications, 8, 15210 (2017)   //   arXiv:1612.04852
    Keywords: molecular electronics, quantum interference, Kondo blockade

  25. Kondo impurities in the Kitaev spin liquid: Numerical renormalization group solution and gauge-flux-driven screening
    Matthias Vojta, Andrew K. Mitchell, Fabian Zschocke
    Phys. Rev. Lett. 117, 037202 (2016)   //   arXiv:1604.03557
    Keywords: spin liquid, Kitaev honeycomb compass model, Kondo impurity, quantum phase transitions

  26. Universality and scaling in a charge two-channel Kondo device
    Andrew K. Mitchell, L. A. Landau, L. Fritz, E. Sela
    Phys. Rev. Lett. 116, 157202 (2016) -- Editor's Suggestion   //   arXiv:1602.02093
    Keywords: two-channel Kondo, non-Fermi liquid, charge-Kondo, quantum criticality, quantum transport

  27. Interleaved numerical renormalization group as an efficient multiband impurity solver
    Katharina Stadler, Andrew K. Mitchell, Jan von Delft and Andreas Weichselbaum
    Phys. Rev. B 93, 235101 (2016)   //   arXiv:1602.02182
    Keywords: Numerical renormalization group, NRG, multi-band impurity solver, iNRG, interleaved-NRG, numerical methods, Kondo

  28. Signatures of Weyl semimetals in quasiparticle interference
    Andrew K. Mitchell and Lars Fritz
    Phys. Rev. B 93, 035137 (2016)   //   arXiv:1512.06392
    Keywords: Topological quantum matter, Weyl semimetals, Fermi arcs, quasiparticle interference (QPI)

  29. Screening mechanisms in magnetic nanostructures
    Andrej Schwabe, Mirek Hänsel, Michael Potthoff and Andrew K. Mitchell
    Phys. Rev. B 92, 155104 (2015)   //   arXiv:1508.03157
    Keywords: Magnetic nanostructures, quantum confined systems, RKKY, Kondo, NRG

  30. Validity of the local self-energy approximation: application to coupled quantum impurities
    Andrew K. Mitchell and Ralf Bulla
    Phys. Rev. B 92, 155101 (2015) -- Editor's Suggestion   //   arXiv:1508.00394
    Keywords: Dynamical mean field theory, Impurity-DMFT, iDMFT, Inhomogeneous-DMFT, Real-space DMFT, two-impurity Kondo, parallel quantum dots

  31. Kondo effect in three-dimensional Dirac and Weyl systems
    Andrew K. Mitchell and Lars Fritz
    Phys. Rev. B 92, 121109(R) (2015) -- Rapid Communication   //   arXiv:1506.05491
    Keywords: Dirac semimetal, Weyl semimetal, 3D topological insulator, impurities, Kondo effect

  32. Multiple magnetic impurities on surfaces: scattering and quasiparticle interference
    Andrew K. Mitchell, Philip G Derry, and David E. Logan
    Phys. Rev. B 91, 235127 (2015)   //   arXiv:1504.05421
    Keywords: Magnetic impurities on surfaces, scattering, STM, QPI, two-impurity Kondo, RKKY

  33. Quasiparticle interference from magnetic impurities
    Philip G Derry, Andrew K. Mitchell, and David E. Logan
    Phys. Rev. B 92, 035126 (2015)   //   arXiv:1503.04712
    Keywords: Quasiparticle interference, QPI, magnetic impurities, scattering theory, Kondo effect

  34. Generalized Wilson Chain for solving multichannel quantum impurity problems
    Andrew K. Mitchell, Martin R. Galpin, Samuel Wilson-Fletcher, David E. Logan, and Ralf Bulla
    Phys. Rev. B 89, 121105(R) (2014) -- Rapid Communication   //   arXiv:1308.1903
    Keywords: Multi-channel Kondo, Numerical Renormalization Group, interleaved NRG (iNRG)

  35. Conductance fingerprint of Majorana fermions in the topological Kondo effect
    Martin R. Galpin, Andrew K. Mitchell, Jesada Temaismithi, David E. Logan, Benjamin Beri, and Nigel R. Cooper
    Phys. Rev. B 89, 045143 (2014)   //   arXiv:1312.5971
    Keywords: Majorana fermions, nanowire/superconductor heterostructures, topological Kondo effect

  36. Quantum phase transitions and thermodynamics of the power-law Kondo model
    Andrew K. Mitchell, Matthias Vojta, Ralf Bulla, and Lars Fritz
    Phys. Rev. B 88, 195119 (2013) -- Editor's Suggestion   //   arXiv:1309.0167
    Keywords: Unconventional metals, quantum phase transitions, perturbative renormalization group, RG, NRG

  37. Kondo effect with diverging hybridization: realization in graphene with vacancies
    Andrew K. Mitchell and Lars Fritz
    Phys. Rev. B 88, 075104 (2013)   //   arXiv:1212.2631v2
    Keywords: Graphene, defects, vacancies

  38. Local moment formation and Kondo screening in impurity trimers
    Andrew K. Mitchell, Thomas F. Jarrold and David E. Logan
    J. Phys. Chem. B 117, 12777 (2013)   //   arXiv:1302.6034
    Keywords: magnetic frustration, triangular triple quantum dot, impurity clusters

  39. Kondo effect on the surface of 3D topological insulators: Signatures in scanning tunneling spectroscopy
    Andrew K. Mitchell, Dirk Schuricht, Matthias Vojta and Lars Fritz
    Phys. Rev. B 87, 075430 (2013)   //   arXiv:1211.0034
    Keywords: topological insulators, quasiparticle interference, QPI, Kondo effect

  40. Universal low-temperature crossover in two-channel Kondo models
    Andrew K. Mitchell and Eran Sela
    Phys. Rev. B 85, 235127 (2012) -- Editor's Suggestion   //   arXiv:1203.4456v1
    Keywords: Two channel Kondo, Two impurity Kondo, non-Fermi liquid, CFT, quantum dots

  41. Local Magnetization in the Boundary Ising Chain at Finite Temperature
    Eran Sela and Andrew K. Mitchell
    J. Stat. Mech. (2012) P04006   //   arXiv:1202.3458v1
    Keywords: quantum 1d transverse field Ising model, quantum criticality, RG flow, form factor method

  42. Two-channel Kondo physics in two-impurity Kondo models
    Andrew K. Mitchell, Eran Sela, David E. Logan
    Phys. Rev. Lett. 108, 086405 (2012)   //   arXiv:1111.6503v1
    Keywords: two-channel Kondo, two-impurity Kondo, non-fermi liquid, conductance

  43. Real-space renormalization group flow in quantum impurity systems: local moment formation and the Kondo screening cloud
    Andrew K. Mitchell, Michael Becker, Ralf Bulla
    Phys. Rev. B 84, 115120 (2011) -- Editor's Suggestion   //   arXiv:1105.0560v2
    Keywords: Kondo screening cloud, entanglement, real-space RG

  44. Two-channel Kondo physics in odd impurity chains
    Andrew K. Mitchell, David E. Logan, H. R. Krishnamurthy
    Phys. Rev. B 84, 035119 (2011)   //   arXiv:1103.5038v3
    Keywords: coupled quantum dots, two channel Kondo, non fermi liquids, Kondo effect

  45. Exact Crossover Green Function in the Two-Channel and Two-Impurity Kondo Models
    Eran Sela, Andrew K. Mitchell, Lars Fritz
    Phys. Rev. Lett. 106, 147202 (2011)   //   arXiv:1101.3028v2
    Keywords: Quantum dots, two channel Kondo, two impurity Kondo, non-fermi liquid, CFT, NRG

  46. Two-channel Kondo phases and frustration-induced transitions in triple quantum dots
    Andrew K. Mitchell, David E. Logan
    Phys. Rev. B 81, 075126 (2010)   //   arXiv:0910.5143v2
    Keywords: triangular triple quantum dot, two channel Kondo, magnetic frustration

  47. Quantum phase transition in quantum dot trimers
    Andrew K. Mitchell, Thomas F. Jarrold, David E. Logan
    Phys. Rev. B 79, 085124 (2009)   //   arXiv:0902.4816v1
    Keywords: triangular triple quantum dots, ferromagnetic Kondo, magnetic frustration

  48. Gate voltage effects in capacitively coupled quantum dots
    Andrew K. Mitchell, Martin R. Galpin, David E. Logan
    EPL (Europhysics Letters) 76 (1), 95 (2006)   //   arXiv:cond-mat/0611219v1
    Keywords: double quantum dot, SU(4) Kondo


Selected research seminars online