Alexei Marchenkov
Associate Professor

 

Ph.D., Leiden University, 1997
Phone: (404) 385-0875
Room: Howey - N017 (office) and S07 (lab)

EMail: alexei.marchenkov [at] physics.gatech.edu

 

■ Research ■

Prof. Marchenkov's group investigates both fundamental topics in contemporary condensed matter physics, such as superconductivity and interplay between electronic, mechanical, and thermal properties in nanoscale systems, and develops novel sensors and experimental methods and techniques.

This research employs state-of-the-art cryogenic, vacuum, electronic and microfabrication devices and technologies.

Prof. Marchenkov's educational interests are in modernizing the curriculum and the approach to teaching experimental science to both undergraduate and graduate students in physical and biological sciences.

■ Publications ■

• A. Marchenkov, Z. Dai, B. Donehoo, R. N. Barnett, and U. Landman, ac Josephson effect and resonant superconducting transport through vibrating Nb nanowires , Nature Nanotechnology advance online publication, July 22 2007 ( doi:10.1038/nnano.2007.218).

Media Attention
	• Scientists Discover New Way to Study Nanostructures ( Georgia Tech Press Release) • Scientists discover new way to study nanostructures ( PhysOrg.com) • New way to study nanostructures is found (United Press International – News Track - Science)

 

• Z. Dai, C. Zhang, R. N. Barnett, A. Marchenkov, and U. Landman, Structural and transport properties of Nb
  nanowires , Phys. Stat. Sol. (a) 204 , 1712 (2007).
• K. Park, A. Marchenkov, Z. M. Zhang, and W. P. King, Low temperature characterization of heated microcantilevers , J. Appl. Phys. 101 , 095504 (2007) .
• A. Marchenkov, Z. Dai, C. Zhang, R. N. Barnett, and U. Landman, Atomic Dimer Shuttling and Two-Level Conductance Fluctuations in Nb Nanowires , Phys. Rev. Lett. 98 , 046802 (2007) .

Media Attention
	•  Scientists Find Why Conductance of Nanowires Vary ( Georgia Tech Press Release) •  Scientists Find Why Conductance of Nanowires Vary ( PhysOrg.com) •  Nanowire conductance discovery announced (United Press International – News Track - Science)

 

• J. Lee, T. L. Wright, M. R. Abel, E. O. Sunden, A. Marchenkov, S. Graham, and W. P. King, Thermal conduction from microcantilever heaters in partial vacuum. J. Appl. Phys. 101 , 014906 (2007) .
• C. Berger, Z. M. Song, X. B. Li, X. S. Wu, N. Brown, C. Naud, D. Mayo, T. B. Li, J. Haas, A. Marchenkov, E. H. Conrad, P. N. First, and W. A. de Heer, Electronic confinement and coherence in patterned epitaxial graphene , Science 312 , 1191-1196 (2006) .

Media Attention
	•  Graphite Provides New Foundation for Circuitry ( Georgia Tech Press Release) •  Graphene provides foundation for new devices that handle electrons as waves (PhysOrg.com) •  Nano World: Graphite nano-electronics (United Press International – NewsTrack – Science)

• Z. Dai and A. Marchenkov, Subgap structure in resistively shunted superconducting atomic point contacts , Appl. Phys. Lett. 88 , 203120 (2006) .
• C. Berger, Z. Song, T. Li, X. Li, A. Y. Ogbazghi, R. Feng, Z. Dai, A. Marchenkov, E. H. Conrad, P. N. First, and W. A. de Heer, Ultrathin Epitaxial Graphite: 2D Electron Gas Properties and a Route toward Graphene-based Nanoelectronics , J. Phys. Chem. B, 108 (52), 19912 –19916 (2004) .
• A. Marchenkov, R. W. Simmonds, J. C. Davis, and R. E. Packard, Ballistic effusion of normal liquid 3 He through nanoscale apertures. Phys. Rev. B 65 , 075414 (2002) .
• R. W. Simmonds, A. Marchenkov, E. Hoskinson, J. C. Davis, and R. E. Packard, Quantum Interference of superfluid 3 He , Nature 412 , 55 (2001) .

• R. W. Simmonds, A. Marchenkov, J. C. Davis, and R. E. Packard , Observation of the superfluid Shapiro effect in a 3 He weak link. Phys. Rev. Lett, 87 , 035301 (2001) .
• R. van Rooijen, A. Marchenkov, H. Akimoto, O. Andreeva, P. van de Haar, R. Jochemsen and G. Frossati, Cryostat for Optical Observations below 1 mK and in Strong Magnetic Fields. J. Low Temp. Phys. 124 , 497 (2001) .

• A. Marchenkov, R. W. Simmonds, J. C. Davis, and R. E. Packard, Observation of the Josephson Plasma Mode for a Superfluid 3 He Weak Link. Phys. Rev. B 61 , 4196 (2000).

• R. W. Simmonds, A. Marchenkov, S. Vitale, J. C. Davis, and R. E. Packard , 1. New Flow Dissipation Mechanisms in Superfluid 3 He . Phys. Rev. Lett. 84 , 6062 (2000) .
• A. Marchenkov, H. Akimoto, R. van Rooijen, R. Jochemsen, and G. Frossati, Observation of melting instability in highly magnetized solid 3 He. Phys. Rev. Lett. 83 , 4598 (1999) .

• A Marchenkov, R. W. Simmonds, S. Backhaus, A. Loshak, J. C. Davis, and R. E. Packard, Bi-state Superfluid 3 He Weak Links and the Stability of Josephson p -states. Phys. Rev. Lett. 83 , 3860 (1999) .

• R. W. Simmonds, A. Loshak, A. Marchenkov, S. Backhaus, S. V. Pereverzev, S. Vitale, J. C. Davis, and R. E. Packard, dc Supercurrents from Resonant Mixing of Josephson Oscillations in a 3 He Weak Link. Phys. Rev. Lett. 81 , 1247 (1998).
• H. Akimoto, A. Marchenkov, R. Jochemsen, and G. Frossati, Forward Current-Voltage Characteristics of Light-Emitting Diodes at Low Temperatures . Cryogenics 38, 451 (1998) .

• O. A. Andreeva, K. O. Keshishev, A. B. Kogan, and A. N. Marchenkov , Growth Kinetics of Vicinal Surfaces of 4 He Crystals. Europhys. Lett. 19 , 683 (1992).

Refereed Conference Papers:

• Z. Dai and A. Marchenkov, Current-Phase Relation of Fully Characterized Atomic-Size Contacts , AIP Conf. Proc. 850 , 761 (2006) (24th International Conference on Low Temperature Physics, Orlando, U.S.A., August 2005.)
• Z. Dai, B. Donehoo, J. Howard, and A. Marchenkov, Properties of Superconducting Atomic-Size Contacts at Finite Temperatures , AIP Conf. Proc. 850 , 763 (2006) (24th International Conference on Low Temperature Physics, Orlando, U.S.A., August 2005.)
• R. W. Simmonds, A. Marchenkov, J. C. Davis, and R. E. Packard, Numerical Studies of the Superfluid Shapiro effect. Physica B 329-333 , 62 (2003) (23rd International Conference on Low Temperature Physics, Hiroshima, Japan, August 2002.)
• R. W. Simmonds, A. Marchenkov, J. C. Davis, and R. E. Packard, Quality Factor of a Superfluid 3He Weak Link Resonator. Physica B 284-288 , 283 (2000) (22nd International Conference on Low Temperature Physics, Espoo and Helsinki, Finland, 4-11 August 1999.)
• R. van Rooijen, A. Marchenkov, H. Akimoto, P. Vorselman, R. Jochemsen, G. Frossati, An optical cryostat to study growth and melting of solid 3He. Physica B 280 , 561 (2000) (22nd International Conference on Low Temperature Physics, Espoo and Helsinki, Finland, 4-11 August 1999.)
• O. Ishikawa, R. Ishiguro, K. Fukuda, Y. Sasaki, T. Takagi, T. Ohmi, T. Mizusaki, A. Marchenkov, S. Davis, and R. E. Packard, NMR Measurements of Superfluid 3He-A in Cylindrical Cell under Rotation. Physica B 284-288 , 248 (2000) (22nd International Conference on Low Temperature Physics, Espoo and Helsinki, Finland, 4-11 August 1999.)
• H. Akimoto, R. van Rooijen, A. Marchenkov, R. Jochemsen, and G. Frossati, Crystal growth and melting velocity of spin-ordered 3He in 0.2 and 9 T. Physica B 255 , 19 (1998) . (Quantum Phenomena at Low Temperatures "Disorder, Defects, and Decoherence in Quantum Systems", Lammi, Finland, 7-11 January 1998.)
• R. van Rooijen, A. Marchenkov, H. Akimoto, R. Jochemsen, and G. Frossati, Dielectric Properties of Vitreous Silica with Various Hydroxyl Concentrations. J. Low Temp. Phys. 110 , 269 (1998) . (International Symposium on Quantum Fluids and Solids, Paris, France, 21-26 July 1997.)
• A. Marchenkov, R. Wagner, O. A. Andreeva, S. Steel, R. Jochemsen, and G. Frossati, Optical Studies of 3He Crystals in High Magnetic Fields. Czech. J. Phys. 46 , 485 (1996). (21st International Conference on Low Temperature Physics, Prague, Czech Republic, 8-14 August 1996.)
• R. Wagner, S. C. Steel, O. A. Andreeva, A. Marchenkov, R. Jochemsen, and G. Frossati, Observation of 3He Crystal Nucleation from the Superfluid Phases. J. Low Temp. Phys. 101, 287 (1995) . (Symposium on Quantum Fluids and Solids, Ithaca, NY, USA, 13-18 June 1995.)

 

■ Awards ■

2004 NSF CAREER Award “CAREER: Interplay between Thermal, Electric and Mechanical Properties of Atomic-Sized Conductors.”