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*** THIS WEBSITE IS CURRENTLY UNDER RECONSTRUCTION. UPDATED VERSION WILL BE POSTED SHORTLY  ***

Publications summary: h-index 14 (Google Scholar), >2000 citations, 11 Letters: 4 Nano Letters, 4 Physical Review Letters, 3 Physical Review B Letters, several single-author papers, 4 published Letters as PI [Carr...Kruchkov, Nano Lett, 2020], [Guan, Yazyev, Kruchkov, Phys Rev B Lett 2022], [Guan, Yazyev, Kruchkov, Nano Lett 2023], [Brzezinska,Guan, Yazyev, Sachdev, Kruchkov, Phys Rev Lett 2023].

 

 

***NEW PAPERS***

Alexander Kruchkov and Shinsei Ryu,  Spectral sum rules reflect topological and quantum-geometric invariants (28 Dec 2023).

Laurel Anderson and colleagues, Magneto-Thermoelectric Transport in Graphene Quantum Dot with Strong Correlations

(16 Jan 2024)

Favourite papers:

[1]  A. Kruchkov,  Quantum transport anomalies in dispersionless electronic bands, Letter in Physical Review B (2023). 

[2] A. Kruchkov, "Quantum geometry, flat Chern bands, and Wannier orbital quantization", Letter in Physical Review B 105, L241102 (2022). 

[3] A. Kruchkov, A. Patel, P. Kim, S. Sachdev, Thermoelectric power of Sachdev-Ye-Kitaev islands: Probing Bekenstein-Hawking entropy in quantum matter experiments, Phys. Rev. B 101, 205148 (2020). 

Outreach: Lindau Nobel Laureate Meeting release.

Related experiment: [2401.08050] Magneto-Thermoelectric Transport in Graphene Quantum Dot with Strong Correlations

[4] G. Tarnopolsky, A. J. Kruchkov, A. Vishwanath, Origin of Magic Angles in Twisted Bilayer Graphene, Physical Review Letters  122, 106405  (2019). 

Press release:  Quanta Magazine (2019) and Quanta Magazine (2021).

[5] A. Kruchkov, One-dimensional Bose-Einstein condensation of photons in a microtube , Phys. Rev. A 93, 043817 (2016).

Related experiment: Nature Physics 14, 1173 (2018).

[6] S. Carr, C. Li, Z. Zhu, E. Kaxiras, S. Sachdev, A.J. Kruchkov, Ultraheavy and ultrarelativistic Dirac quasiparticles in sandwiched graphenes, Nano Letters  (2020). 

Remark: The theoretical paper which lead to experiments Nature 590, 249 (2021) and Science 371, 6534, 1133 (2021). See also comment by Mike Zaletel

Letters as PI:

[1]  M. BrzezinskaY. GuanO. V. YazyevS. SachdevA. Kruchkov, Engineering SYK interactions in disordered graphene flakes under realistic experimental conditions,  Phys Rev Lett  (2023). 

[2] Y. Guan, O.V. Yazyev, A. Kruchkov, Unconventional Flat Chern Bands and 2e Charges in Skyrmionic Moiré Superlattices,  Nano Letters (2023)

[3] Y. Guan, O.V. Yazyev, A. Kruchkov, Re-entrant magic-angle phenomena in twisted bilayer graphene in integer magnetic fluxes,   Physical Review B (Letter), 106, L121115 (2022). 

[4] S. Carr, C. Li, Z. Zhu, E. Kaxiras, S. Sachdev, A.J. KruchkovUltraheavy and ultrarelativistic Dirac quasiparticles in sandwiched graphenes, Nano Letters  (2020). 

[5] I. Lukin, A. Sotnikov, A. Kruchkov, Unconventional superfluidity and quantum geometry of topological bosons (July 2023)

Recent papers (2023)

[27] Alexander Kruchkov and Shinsei Ryu,  Spectral sum rules reflect topological and quantum-geometric invariants (28 Dec 2023).

[26] Alexander Kruchkov and Shinsei Ryu, Noise probing of topological band gaps in dispersionless quantum states (31 Aug 2023), submitted, under review. 

[25]  Alexander Kruchkov, Anomalous conductivity of PT-symmetric Fermi liquids (27 May 2023), submitted, under reviw. 

[24] I. Lukin, A. Sotnikov, A. Kruchkov, Unconventional superfluidity and quantum geometry of topological bosons (July 2023)

[23]   A. Kruchkov, Quantum transport anomalies in dispersionless electronic bands, Letter in Physical Review B, 107, L241102 (2023). 

[22]  M. BrzezinskaY. GuanO. V. YazyevS. SachdevA. Kruchkov, Engineering SYK interactions in disordered graphene flakes under realistic experimental conditions, Physical Review Letters, 131, 036503  (2023). 

Earlier studies (<2022)

[21] Y. Guan, O.V. Yazyev, A. Kruchkov, Re-entrant magic-angle phenomena in twisted bilayer graphene in integer magnetic fluxes,   Physical Review B (Letter), 106, L121115 (2022). 

[20] Y. Guan, O.V. Yazyev, A. Kruchkov, Unconventional Flat Chern Bands and 2e Charges in Skyrmionic Moiré Superlattices,  Nano Letters (2023)

[19]  [Letter]   A. Kruchkov, Origin of band flatness and constraints of higher Chern numbers (2021), published as Letter "Quantum geometry, flat Chern bands, and Wannier orbital quantization" in Physical Review B 105, L241102 (2022). 

[18]  [Editors' Suggestion]   A. Kruchkov, A. Patel, P. Kim, S. Sachdev, Thermoelectric power of Sachdev-Ye-Kitaev islands: Probing Bekenstein-Hawking entropy in quantum matter experiments, Phys. Rev. B 101, 205148 (2020). 

[17]  S. Carr, C. Li, Z. Zhu, E. Kaxiras, S. Sachdev, A.J. Kruchkov, Ultraheavy and ultrarelativistic Dirac quasiparticles in sandwiched graphenes, Nano Letters  (2020). 

[16] F. Haddadi, Q. Wu, A. J. Kruchkov, O.V. Yazyev, Moiré Flat Bands in Twisted Double Bilayer Graphene,  Nano Letters (2020). 

[15] D.S. Borgnia, A.J. Kruchkov and R.-J. Slager, Non-Hermitian Boundary Modes, Phys. Rev. Lett. 124, 056802 (2020). 


[14]  [Editors' Suggestion]  E. Khalaf, A. J. Kruchkov, G. Tarnopolsky, A. Vishwanath, Magic Angle Hierarchy in Twisted Graphene Multilayers, Phys. Rev. B 100, 085109  (2019).

[13]  [Editors' Suggestion] G. Tarnopolsky, A. J. Kruchkov, A. Vishwanath, Origin of Magic Angles in Twisted Bilayer Graphene, Physical Review Letters  122, 106405  (2019) 

[12]  J. S. White, I. Živković, A. J. Kruchkov, M. Bartkowiak, A. Magrez, and H. M. Rønnow, Electric-Field-Driven Topological Phase Switching and Skyrmion-Lattice Metastability in Magnetoelectric Cu2OSeO3. Phys. Rev. Apllied, 10, 014021 (2018).

[11]  A. J. Kruchkov, J. S. White, M. Bartkowiak, I. Zivcovic, A. Magrez, H.M. Rønnow, Direct control of the skyrmion phase stability by electric field in a magnetoelectric insulator. Scientific Reports, 8, 10466 (2018).

[10] P.Huang, M. CantoniA. KruchkovR. JayaramanA. MagrezF. CarboneH.M. Rønnow, In situ Electric Field Skyrmion Creation in Magnetoelectric Cu2OSeO3. Nano Letters, 2018, 18 (8), pp 5167–5171.

[9] A. J. Kruchkov and H.M. Rønnow, Skyrmion Lattices in Electric Fields. Preprint: arXiv 1702.08863. Submitted to Phys.Rev. B

[8] A. Kruchkov, One-dimensional Bose-Einstein condensation of photons in a microtube , Phys. Rev. A 93, 043817 (2016).

[7] [Editors' Suggestion]  G. Berruto, I. Madan, Y. Murooka, E. Pomarico, G. M. Vanacore, J. Rajeswari, R. Lamb, P. Huang, A.J. Kruchkov, Y. Togawa, T. LaGrange, D. McGrouther, H. M. Rønnow and F. Carbone, Laser-induced Skyrmion writing and erasing in an ultrafast cryo-Lorentz transmission electron microscope, Phys. Rev. Lett., 120 (2018) 

 

[6] I. Levatic, P. Popcevic, V. Surija, A. Kruchkov, H. Berger, A. Magrez, J. S. White, H. M. Rønnow & I. Zivkovic, Dramatic pressure-driven enhancement of bulk skyrmion stability, Scientific Reports 6, 21347 (2016).

[5] A. Kruchkov, Radiation spectrum of systems with condensed light.  Preprint: arXiv:1404.2561

 

[4] A. Kruchkov, Bose-Einstein condensation of light in a cavity, Phys. Rev. A 89, 033862 (2014).

 

[3] A. Kruchkov, Y. Slyusarenko, Bose-Einstein condensation of photons in an ideal atomic gas, Phys. Rev. A 88, 013615 (2013).

 

[2] Y. Slyusarenko, A. Kruchkov, Mechanism of collisionless sound damping in dilute Bose gas with condensate , Cond.Mat.Phys., vol. 16, No. 2, 23004, (2013).

[1] A. Kruchkov, Reflections on the 66th Lindau Nobel Laureate Meeting, Condens. Matter, 1(1), 13 (2016) doi: 10.3390/condmat1010013.

 

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