Banaras Hindu University, Faculty of Science,Department of Physics, Varanasi

Dr. Debanand Sa

Professor
Ph D (Utkal University)
Contact Information:
+91-542-2307308 , +91-542-2368390 , +91 8004232575
Fax: +91-542-2368174
Email Id:[email protected]

Academic Qualifications:

S. No.	Degree	Institution	Year
1.	B.Sc.	Sambalpur University	1983
2.	M.Sc.	Sambalpur University	1986
3.	Ph. D.	Utkal University	1994

Professional Employments:

S. No. Name of the Post Name of the Department Name of the Inst./Univ Duration

7. Professor Physics Department Banaras Hindu University (India) 2011-Present

6. Associate Professor Physics Department Banaras Hindu University (India) 2008-2011

5. Reader Physics Department Banaras Hindu University (India) 2005-2008
4. Post Doctoral Fellow University of Dortmund, Germany 1998-1999

3. Post Doctoral Fellow Physics Department INFN (Italy) 2002-2004

2. Research Associate Department of Physics Indian Institute of Technology, Kanpur 1996-1998

1. Post Doctoral Fellow The Institute of Mathematical Sciences, Chennai, India The Institute of Mathematical Sciences, Chennai(India) 1994-96

Area of Specialization:

Theoretical Condensed Matter Physics.

Contact Information:

Office
Department of Physics
Banaras Hindu University
Varanasi - 221 005, India
Telephone:
+91-542-2307308 , +91-542-2368390
Fax: +91-542-2368174
Email: [email protected]

Research Interest :

Correlated electron systems.
Low and high temperature superconductivity.
Fermi and non-Fermi liquids in low dimensional systems.
Kondo and quantum impurity problems.
Nested and spin-Peierl�s systems.
Ferroic and multiferroic materials
Emergent Gauge theories
Topological insulators and superconductors

Positions Held :

2004- Reader Dept. of Physics, BHU, Varanasi.
2003-2004 Visiting Scientist, The Institute of Mathematical Sciences, Chennai.
2001-2003 Guest Scientist, Max Planck Institute for Complex Systems (MPIPKS), Dresden, Germany.
1999-2000 Research Associate, Fachbereich Physik, Univ. of Saarland, Saarbruecken, Germany. 1998-1999 Post Doctoral Fellow, Institute of Physics, Univ. of Dortmund, Dortmund, Germany.
1996-1998 Research Associate, Physics Department, I.I.T. Kanpur.
1994-1996 Post Doctoral Fellow, The Institute of Mathematical Sciences, Chennai.

List of 10 best publications :

Novel topological phase due to coexistence of superconductivity and spin-density-wave: Application to High Tc superconductors, Amit Gupta and Debanand Sa, Solid state Commun. 203, 41 (2015).

Topological phase in a d(x2-y2)+(p+ip) superconductor in presence of spin-density-wave, Amit Gupta and Debanand Sa, Eur. Phys. J. B 89, 24 (2016).

Spin-orbit coupling, spin currents and emergent gauge fields in solids, Debanand Sa, AIP Conf. Proceedings, 1461, 160 (2012).

Raman scattering in orthorhombic multiferroic RMnO3: The role of mixing of lowest harmonic among the components of magnetization, Shruti Shukla and Debanand Sa, Solid state Commun. 150, 2001 (2010).

Superconductivity in NaxCoO2.yH2O: Is spin-charge separation protecting d1+id2 state?, Debanand Sa, Manas Sardar and G. Baskaran, Phys. Rev. B 70, 104505 (2004).

Hidden Quantum Critical Point in a Ferromagnetic Superconductor, Debanand Sa, Phys. Rev. B (Rapid Comm), 66, 140505 (2002).

Superconductivity from a non-Fermi liquid: A Ginzburg-Landau approach, V. N. Muthukumar, Debanand Sa and Manas Sardar, Phys. Rev. B 52, 9647 (1996).

A generalized Ginzburg-Landau approach to Second Harmonic Generation, Debanand Sa, Roser Valenti and Claudius Gros, European Phys. Journal B 14, 301 (2000).

Effective Charge and Spin Hamiltonian for the Quarter-Filled Ladder Compound a-NaV2O5, Debanand Sa, and Claudius Gros, European Phys. Journal B 18, 421 (2000).

Pair breaking and Bound States in Disordered Superconductors, Debanand Sa, A. K. Chattopadhyay and Richard A. Klemm, J. Phys. Cond. Matt. 14, L577 (2002).

List of Full publications :

A mechanism for pairing of RVB excitations, S. N. Behera and D. Sa, Bull. Mat. Sc. 14, 1045 (1991).

Phonon-Raman scattering in a correlated superconductor, Debanand Sa and S. N. Behera, Physica C 203, 347 (1992).

Raman scattering in a correlated superconductor II: A finite temperature study, Debanand Sa and S. N. Behera, Physica C 226, 85 (1994).

Phonon-Raman scattering in a nested Fermi liquid, Debanand Sa, IP/BBSR/93-47.

Effect of single particle hopping and out of plane magnetic impurity on coupled planar superconductors, Manas Sardar and Debanand Sa, Mod. Phys. Lett. B 9, 737 (1995).

Superconductivity from a non-Fermi liquid: A Ginzburg-Landau approach, V. N. Muthukumar, Debanand Sa and Manas Sardar, Phys. Rev. B 52, 9647 (1996).

Formation of local moment near a static vacancy in one dimensional large U Hubbard model, Debanand Sa, Europhysics Lett. 42, 289 (1998).

Static vacancies in a one-dimensional Heisenberg model, Debanand Sa, Solid State Comm. 108, 727 (1998).

Potential scattering in Luttinger liquid: Weak versus strong correlations, Debanand Sa, Solid State Comm. 113, 263 (1999).

Local moments in two-dimensional quantum antiferromagnets doped with static impurities, Debanand Sa, Int. J. Mod. Phys. B 26, 2725 (1998).

Incoherence versus coherence in c-axis conductivity in high Tc superconductors, Debanand Sa, T. P. Pareek and A. M. Jayannavar, (preprint).

A generalized Ginzburg-Landau approach to Second Harmonic Generation, Debanand Sa, Roser Valenti and Claudius Gros, European Phys. Journal B 14, 301 (2000).

Effective Charge and Spin Hamiltonian for the Quarter-Filled Ladder Compound a-NaV2O5, Debanand Sa, and Claudius Gros, European Phys. Journal B 18, 421 (2000).

Pair breaking and Bound States in Disordered Superconductors, Debanand Sa, A. K. Chattopadhyay and Richard A. Klemm, J. Phys. Cond. Matt. 14, L577 (2002).

Hidden Quantum Critical Point in a Ferromagnetic Superconductor, Debanand Sa, Phys. Rev. B (Rapid Comm), 66, 140505 (2002).

Fermi surface topology and Ferromagnetic Superconductivity in UGe2, Debanand Sa, cond-mat/0301333, (2003).

Superconductivity in NaxCoO2.yH2O: Is spin-charge separation protecting d1+id2 state?, Debanand Sa, Manas Sardar and G. Baskaran, Phys. Rev. B 70, 104505 (2004).

Is Li2Pd3B a self doped hole superconductor?, Manas Sardar and Debanand Sa, Physica C 411, 120 (2004).

Possibility of stripe ordering in unhydrated NaxCoO2 at x=1/2, Debanand Sa, Manas Sardar, R.Shankar and G. Baskaran, preprint (2006).

Influence of pressure on the electric-field induced phase transitions in liquid crystals, Amit Srivastava, Debanand Sa and Shri Singh, European Phys. Journal E 20, 63 (2006).

Pressure variation of re-entrant transition temperature in liquid crystals, Amit Srivastava, Debanand Sa and Shri Singh, European Phys. Journal E 22, 111(2007).

Landau theory of ferroelectric transition in long cylindrical nanoparticles, Preeti Khare and Debanand Sa, European Phys. Journal B 63, 205 (2008).

Anomalous X-ray diffraction peak broadening and lattice strains in Zn{1-x}CoxO dilute magnetic semiconductors, Chandana Rath, P. Mallick, D. Pandey, Debanand Sa, A. Banerjee and N. C. Mishra, J. Phys. Cond. Matt. 21, 075801 (2009).

New collective modes in multiferroic TbMnO3: The electromagnons, Shruti Shukla and Debanand Sa, Solid State Commun. 149, 1557 (2009).

Pressure driven re-entrant transition in liquid crystals: The role of inverse layer spacing, A. Srivastava, Debanand Sa and Shri Singh, liquid crystals, 37, 227 (2010).

Soft mode analysis and ferroelectric transition in spherical nanoparticles, Preeti Khare and Debanand Sa, Solid State Commun. 150, 172 (2010).

A phenomenological Landau theory for electromagnons in cubic spinnel multiferroic CoCr2O4, Shruti Shukla and Debanand Sa, J. Phys. Cond. Matt. 22, 225903 (2010).

Raman scattering in orthorhombic multiferroic RMnO3: The role of mixing of lowest harmonic among the components of magnetization, Shruti Shukla and Debanand Sa, Solid state Commun. 150, 2001 (2010).

A self-consistent approach to soft mode analysis in size driven ferroelectricity, Preeti Khare and Debanand Sa, Physica B 406, 2948 (2010).

Surface effects and diffusive phase transition in ferroelectric thin films: A self consistent approach, Preeti Khare and Debanand Sa, Solid State Commun. 152, 1572 (2012).

Spin-orbit coupling, spin currents and emergent gauge fields in solids, Debanand Sa, AIP Conf. Proceedings, 1461, 160 (2012).

A phenomenological theory for polarization flop in spiral multiferroic TbMnO3, Shruti Tiwari and Debanand Sa, Pramana-J. Phys, (DOI: 10.1007/s12043-015-1090-9).

Novel topological phase due to coexistence of superconductivity and spin-density-wave: Application to High Tc superconductors, Amit Gupta and Debanand Sa, Solid state Commun. 203, 41 (2015).

Topological phase in a d(x2-y2)+(p+ip) superconductor in presence of spin-density-wave, Amit Gupta and Debanand Sa, Eur. Phys. J. B 89, 24 (2016).

Thermoelectric transport in the topological phase due to the coexistence of superconductivity and spin-density-wave, Amit Gupta and Debanand Sa, Eur. Phys. J. B 89, 1(2016).