Dr. Sambandamurthy Ganapathy

Photo of Assistant Professor Sambandamurthy Ganapathy  

Assistant Professor, Ph.D. Indian Institute of Science (2000)

Office: xxx Fronczak Hall,  (716) 645-2017 ext.
Lab: 131, 137 Fronczak Hall,  (716) 645-2017 ext.
Email: sg82@buffalo.edu
link to personal website for more info

Education

  Ph.D. -- Indian Institute of Science, Bangalore (2000)
M.S. -- The American College, Madurai (1994)
B.S. -- St. John's College, Palayamkottai (1992)

Research Interests

 
  • Quantum Transport in Nanostructures
  • Nanoelectronics

  Our experimental research group studies physical properties of low dimensional condensed matter systems. We use advanced nanofabrication techniques combined with controlled sample growth to design and develop sub-micron devices. These devices will be used to explore microscopic mechanisms that influence and/or dictate the fundamental physical properties at the nanometer scale level.

We explore electron transport in superconducting wires, rings, nanotubes, nanotube quantum dots and graphene atomic layers under extreme physical conditions: ultra low temperatures (10 mK), high magnetic fields (16 T) and a.c. electric fields (~GHz). Some of our physics interests include quantum phase transitions (e.g. superconductor-insulator transition), conduction in superconducting wires, Kondo effect versus superconductivity in nanotubes, microwave spectroscopy to study collective phases in graphene monolayers, superconducting films etc.

Selected Publications

  1. "Melting of a 2D quantum electron solid in high magnetic field", Y. P. Chen, G. Sambandamurthy, Z. H. Wang, R. M. Lewis, L. W. Engel, D. C. Tsui, P. D. Ye, L. N. Pfeiffer and K. W. West, Nature Physics 2, 452 (2006).
  2. "Power-law resistivity behavior in 2D superconductors across the magnetic field-tuned superconductor-insulator transition", G. Sambandamurthy, A. Johansson, E. Peled, D. Shahar, P. G. Bjornsson and K. A. Moler, Europhysics Letters 75, 1 (2006).
  3. "Nanowire Acting as a Superconducting Quantum Interference Device", A. Johansson, G. Sambandamurthy, D. Shahar, N. Jacobson and R. Tenne, Phys. Rev. Lett. 95, 116805 (2005).
  4. "Experimental Evidence for a Collective Insulating State in Two- Dimensional Superconductors", G. Sambandamurthy, L. W. Engel, A. Johansson, E. Peled and D. Shahar, Phys. Rev. Lett. 94, 017003 (2005).
  5. "Superconductivity-Related Insulating Behavior", G. Sambandamurthy, L. W. Engel, A. Johansson and D. Shahar, Phys. Rev. Lett. 92, 107005 (2004).