D. Sa

activity

19942026

most citedThermoelectric transport in the topological phase due to the coexistence of superconductivity and spin-density-wave

66 citations · 208 across the 14 of their papers we have counts for

collaborators

14 papers

cond-mat.str-el2026

Hubbard model at U= $\infty$ : Role of single and two-boson fluctuations

Debanand Sa, Anirban Dutta

We have developed a semi-analytical framework formulated in the canonical fermion representation to investigate strongly correlated electron systems. We consider the U= $\infty$ Hub…

cond-mat.str-el2016

Chiral magnetic effect and Maxwell-Chern-Simons electrodynamics in Weyl semimetals

Debanand Sa

The Weyl semimetal, due to a non-zero energy difference in the pair of Weyl nodes shows chiral magnetic effect(CME). This leads to a flow of dissipationless electric current along…

cond-mat.supr-con2015★ 66 cited

Thermoelectric transport in the topological phase due to the coexistence of superconductivity and spin-density-wave

Amit Gupta, Debanand Sa

We study the thermoelectric transport in two dimensional topological system which has coexistence of superconductivity(SC) and spin-density wave(SDW). The SC is presumed to be of $…

cond-mat.supr-con2015★ 3 cited

Topological phase in a $d_{x^{2} - y^{2}} + (p + i p)$ superconductor in presence of spin-density-wave

Amit Gupta, Debanand Sa

We consider a mean-field Hamiltonian for a $d_{x^{2} - y^{2}} + (p + i p)$ superconductor(SC) in presence of spin-density-wave(SDW) order. This is due to the fact that the non-commutativity o…

cond-mat.supr-con2014★ 6 cited

Topological phases due to the coexistence of superconductivity and spin-density wave: Application to high Tc superconductors in the underdoped regime

Amit Gupta, Debanand Sa

We consider the coexistence of superconductivity(SC) and spin-density wave(SDW). The SC is presumed to be of $d_{x^{2} - y^{2}} + i d_{x y} (d_{1} + i d_{2})$ type whereas the SDW order paramet…

cond-mat.supr-con2004★ 12 cited

Is Li $_{2}$ Pd $_{3}$ B a self-doped hole superconductor ?

Manas Sardar, Debanand Sa

We propose that the electrons responsible for superconductivity in Li2Pd3B come from the palladium 4d-electrons. So, its electronic properties are likely to be dominated by strong…

cond-mat.supr-con2003★ 12 cited

Superconductivity in Na $_{x}$ CoO $_{2}$ $\cdot$ yH $_{2}$ O : Is Spin-Charge Separation Protecting a d $_{1}$ +id $_{2}$ State ?

Debanand Sa, Manas Sardar, G. Baskaran

Superconductivity in Na $_{x}$ CoO $_{2}$ $\cdot$ yH $_{2}$ O is likely to be a p or d-wave; however, experiments are unable to pinpoint the symmetry. A simple estimate of pair breaking effects…

cond-mat.str-el2003

Fermi surface topology and ferromagnetic superconductivity in UGe $_{2}$

Debanand Sa

We consider a Stoner ferromagnet in presence of a quasi-one dimensional Fermi surface in its spin majority band. Assuming a twin $δ$ -function peaked density of state due to the low…

cond-mat.supr-con2002★ 6 cited

Hidden Quantum Critical Point in a Ferromagnetic Superconductor

Debanand Sa

We consider a coexistence phase of both Ferromagnetism and superconductivity and solve the self-consistent mean-field equations at zero temperature. The superconducting gap is show…

cond-mat.supr-con2002★ 10 cited

Pairbreaking Without Magnetic Impurities in Disordered Superconductors

Amit K. Chattopadhyay, Richard A. Klemm, Debanand Sa

We study analytically the effects of inhomogeneous pairing interactions in short coherence length superconductors, using a spatially varying Bogoliubov-deGennes model. Within the B…

cond-mat2000★ 23 cited

Effective Charge and Spin Hamiltonian for the Quarter-Filled Ladder Compound $α^{'}$ -NaV $_{2}$ O $_{5}$

Debanand Sa, C. Gros

An effective intra- and inter-ladder charge-spin hamiltonian for the quarter-filled ladder compound $α^{'}$ -NaV $_{2}$ O $_{5}$ has been derived by using the standard canonical transformatio…

cond-mat1999★ 34 cited

A Generalized Ginzburg-Landau Approach to Second Harmonic Generation

Debanand Sa, R. Valenti, C. Gros

We develop a generalized Ginzburg-Landau theory for second harmonic generation (SHG) in magnets by expanding the free energy in terms of the order parameter in the magnetic phase a…

cond-mat1995★ 35 cited

Anisotropic Spin-1/2 Heisenberg Chain with Open Boundary Conditions

P. de Sa, A. M. Tsvelik

We study the exact solution of the XXZ spin-1/2 Heisenberg chain with a boundary magnetic field in the region where the bulk excitations are gapless. It is shown that a bound state…

cond-mat1994★ 1 cited

Effect of Single Particle Hopping and out of Plane Magnetic Impurity on Coupled Planar Superconductors

Manas Sardar, Debanand Sa

It is shown that the single particle band motion along the $c$ axis is harmful for superconductivity. Variation of $T_{c}$ with $c$ axis hopping parameter is shown for both the conve…

Hubbard model at U=∞: Role of single and two-boson fluctuations

Chiral magnetic effect and Maxwell-Chern-Simons electrodynamics in Weyl semimetals

Thermoelectric transport in the topological phase due to the coexistence of superconductivity and spin-density-wave

Topological phase in a dx2−y2​+(p+ip) superconductor in presence of spin-density-wave

Topological phases due to the coexistence of superconductivity and spin-density wave: Application to high Tc superconductors in the underdoped regime

Is Li2​Pd3​B a self-doped hole superconductor ?

Superconductivity in Nax​CoO2​⋅yH2​O : Is Spin-Charge Separation Protecting a d1​+id2​ State ?

Fermi surface topology and ferromagnetic superconductivity in UGe2​

Hidden Quantum Critical Point in a Ferromagnetic Superconductor

Pairbreaking Without Magnetic Impurities in Disordered Superconductors

Effective Charge and Spin Hamiltonian for the Quarter-Filled Ladder Compound α′-NaV2​O5​

A Generalized Ginzburg-Landau Approach to Second Harmonic Generation

Anisotropic Spin-1/2 Heisenberg Chain with Open Boundary Conditions

Effect of Single Particle Hopping and out of Plane Magnetic Impurity on Coupled Planar Superconductors

Hubbard model at U= $\infty$ : Role of single and two-boson fluctuations

Topological phase in a $d_{x^{2} - y^{2}} + (p + i p)$ superconductor in presence of spin-density-wave

Is Li $_{2}$ Pd $_{3}$ B a self-doped hole superconductor ?

Superconductivity in Na $_{x}$ CoO $_{2}$ $\cdot$ yH $_{2}$ O : Is Spin-Charge Separation Protecting a d $_{1}$ +id $_{2}$ State ?

Fermi surface topology and ferromagnetic superconductivity in UGe $_{2}$

Effective Charge and Spin Hamiltonian for the Quarter-Filled Ladder Compound $α^{'}$ -NaV $_{2}$ O $_{5}$