SOLID STATE THEORY GROUP

[IMAGE]

Gonzalo Usaj

Centro Atómico Bariloche
8400 S. C. de Bariloche
Río Negro, Argentina
Tel.: +54 2944 445100 -- Int. 5350 or +54 2944 445170
Fax.: +54 2944 445299
usaj AT cab.cnea.gov.ar

Research Interests

  • Electronic transport through nanostructures and molecular systems
  • Spin dependent transport (spintronics): spin Hall effect, spin-orbit effects, spin coherence
  • Quantum transport in mesoscopic systems: interference and interactions effects (Coulomb blockade)
  • Decoherence and irreversibility in quantum systems

Curriculum Vitae

Education

Ph.D. in Physics, FaMAF, Universidad Nacional de Córdoba, Argentina, August 1999
Licenciatura en Física (Master Thesis in Physics), FaMAF, Universidad Nacional de Córdoba, Argentina, March 1995

Research Experience

Present
Adjunct Researcher of CONICET, Argentina (since 2005)
2003-2005
Assistant Researcher of CONICET, Argentina.
1999-2003
Postdoctoral Fellow (research associate), Physics Department, Duke University, USA.

Publications
  • Last five years

[1] A. Reynoso, Gonzalo Usaj, and C. A. Balseiro. Detection of spin polarized currents in quantum point contacts via transverse electron focusing. Physical Review B, 75(8):085321, 2007. [  http ]
[2] M. D. Nunez Regueiro, P. S. Cornaglia, Gonzalo Usaj, and C. A. Balseiro. Slave boson theory for transport through magnetic molecules with vibronic states. Physical Review B, 76(7):075425, 2007. [ http ]
[3] Damir Herman, T. Tzen Ong, Gonzalo Usaj, Harsh Mathur, and Harold U. Baranger. Level spacings in random matrix theory and coulomb blockade peaks in quantum dots. Physical Review B, 76(19):195448, 2007. [ http ]
[4] P. S. Cornaglia, Gonzalo Usaj, and C. A. Balseiro. Electronic transport through magnetic molecules with soft vibrating modes. Physical Review B, 76(24):241403, 2007. [ http ]
[5] Gonzalo Usaj and C. A. Balseiro. Design and control of spin gates in two quantum-dot arrays. Applied Physics Letters, 88(10):103103, 2006. [ http ]
[6] A. Reynoso, Gonzalo Usaj, and C. A. Balseiro. Spin hall effect in clean two-dimensional electron gases with rashba spin-orbit coupling. Physical Review B, 73(11):115342, 2006. [ http ]
[7] A. Reynoso, Gonzalo Usaj, and C. A. Balseiro. Charge and spin transport in nanoscopic structures with spin-orbit coupling. Physica B: Physics of Condensed Matter, 384(1):28, 2006. [ http ]
[8] A. Reynoso, Gonzalo Usaj, and C. A. Balseiro. Imaging transverse electron focusing in semiconducting heterostructures with spin orbit coupling. In Proceedings Les Houches Summer School 2006, 2006.
[9] Gonzalo Usaj, P. Lustemberg, and C. A. Balseiro. Tuning the nonlocal spin-spin interaction between quantum dots with a magnetic field. Physical Review Letters, 94(3):036803, 2005. [ http ]
[10] Gonzalo Usaj and C. A. Balseiro. Spin accumulation and equilibrium currents at the edge of 2degs with spin-orbit coupling. Europhysics Letters, 72(4):631-637, 2005. [ http ]
[11] Gonzalo Usaj and H. U. Baranger. Anisotropy in ferromagnetic nanoparticles: Level-to-level fluctuations of a collective effect. Europhysics Letters, 72(1):110-116, 2005. [ http ]
[12] Gonzalo Usaj and C. A. Balseiro. Transverse electron focusing in systems with spin-orbit coupling. Physical Review B, 70(4):041301, 2004. [ http ]
[13] A. Reynoso, Gonzalo Usaj, M. J. Sánchez, and C. A. Balseiro. Theory of edge states in systems with rashba spin-orbit coupling. Physical Review B, 70(23):235344, 2004. [ http ]
[14] C. A. Balseiro and Gonzalo Usaj. Conducción electrónica en sistemas nanoscópicos: Transportando electrones en circuitos de escala molecular. Ciencia Hoy, 14(84):14-32, 2004. [ http ]
[15] Gonzalo Usaj and Harold U. Baranger. Exchange and the coulomb blockade: Peak height statistics in quantum dots. Physical Review B, 67(12):121308, 2003. [ http ]