Email : brahaman.phys@aliah.ac.in

Address : Department of Physics, Aliah University, Newtown, Kolkata Email:badiur.rahaman@gmail.com

Phone : +91-33 23416525

Room No : 2nd Floor

Joined : October 2009

Email:badiur.rahaman@gmail.com; brahaman.phys@aliah.ac.in

Telephone: +91-33 23416525

Address: Department of Physics, Aliah University, Newtown, Kolkata-700156

Education

Ph.D.
Thesis title: Electronic & Magnetic Properties of Quantum Spin Systems

Guide Name: Dr. Tanusri Saha-Dasgupta,

Institute/Organization/University: Jadavpur University
Place of Research: S.N. Bose National Centre for Basic Sciences, Saltlake, Kolkata

Date of Registration: 20.11.2006

Year of Award: 8^th April 2009

M.Sc. (Physics), 2001
 Precidency College, Calcutta University

B.Sc. (Physics Hons.), 1999
Jangipur College, Calcutta University

Teaching Experience

From 2009

Asstt. Professor, Department of Physics, Aliah University

Field of Specialization

Condensed Matter and Complex Systems

DFT based Computational Physics

• Strongly Correlated Systems
• Low Dimensional Systems
• Electronic Structure Calculations

Courses Taught/Teaching

Physical Optics

Acoustics

Solid State Physics

Mathematical Physics

Laboratory

Research Area

First Principles Calculations of the Electronic Structure:

Novel materials are a key to new technologies. Increasingly, technologies are becoming materials limited, so far new industries to develop, it is essential to discover materials with improved properties. Considering the advances in computational methods and computer hardware over the last few years, it is not surprising that modeling is playing an ever increasing role in the search for new materials. Material-specific theory, especially computational theory, is being used to understand the properties of novel materials in microscopic terms, and the understanding thus gained has often proved essential for the optimization of the known and the search for new materials.

The electrical, magnetic and optical properties of materials are controlled by their composition and structure; the structure and also strength of materials are determined by the chemical bonding between the atoms. Hence, “the chemistry controls the physical properties”.

At the root of all of these properties are the electrons: Valence electrons are responsible for the chemical bonding, conduction electrons for the electrical properties and both types of electrons are responsible for the magnetic and optical properties. The valence electrons can be described quite accurately without the use of adjustable parameters, that is ab initio, by an effective one-electron Schrodinger equation derived from a so-called local density approximation (LDA) to the density-functional formalism (Khon-Sham equation). Also the conduction electrons can be described by such a one-electron Schrodinger equation, although for nearly localized d or f-electrons the LDA is merely a first, rough approximation.

Specific area of work:

• First principle electronic structure calculation of Complex Materials

• Microscopic investigation of Strongly Correlated Systems

• Electronic and magnetic properties of Low Dimensional Quantum Spin Systems

Experience

Research experience from 2003

Teaching experience from 2009

Conference Papers Published

1. Electronic structure and microscopic model of CoNb₂O_6, AIP Conference Proceedings, 1953, 120011 (2018).
2. Comparative study of electronic structure and microscopic model of SrMn₃P₄O₁₄ and Sr₃Cu₃(PO₄)_4, AIP Conference Proceedings, 1953, 140037  (2018).
3. Electronic structure and microscopic model of SrMn3P4O14, 55-100, ISBN 9789386256850 (2017).

Journal Papers Published

1. Thermodynamic and resonant properties of mixed spin compounds ACuFe₂(VO4)₃ (A = Li, Na), Journal of Alloys and Compounds 842, 155763 (2020).

2. Short-Range and Long-Range Order in AFM–FM Exchange Coupled Compound LiCu₂(VO₄)(OH)₂, J. Phys. Chem. C 123, 29, 17933–17942 (2019).

3. Electronic and magnetic structure of Sr2Fe3S2O3: a 2-D AFM spin ladder system, IJIIP, 1, 1, 9-16 (2019).

4. Interplay of Alternation and Further Neighbor Interaction in 1-D S=1/2 spin chain: A case study with Cs₂CuA_l4O₈, Phys. Rev. B 98, 144412 (2018).
5. Spin-order-induced ferroelectricity and magnetoelectric effect in LiCuFe₂(VO₄)₃, Physical Review Applied, 10, 034008 (2018).
6. Thermodynamic properties, Mössbauer study and first principles calculations of TlFe(MoO₄)₂, Journal of Materials Chemistry C, 122, 19746-19755 (2018).
7. Canted antiferromagnet superimposed on a buckled kagome network in RbMn₄(PO₄)₃, Acta crystallographica Section C 74, 641-649 (2018).
8. Structure-Property Relationships in α-, β-, and γ-Modifications of Mn₃(PO₄)₂, Inorg. Chem. 55, 10692-10700 (2016).
9. Magnetic, resonance, and optical properties of Cu₃Sm(SeO₃)₂O₂Cl:A rare-earth francisite compound, Phys. Rev. B. 94, 054401 (2016).
10. Vehement competition of multiple superexchange interactions and peculiar magnetically disorder state in Cu(OH)F, Journal of the Physical Society of Japan 85, 024709 (2016).
11. Valence-bond solid as the quantum ground state in honeycomb layer urusovite CuAl(AsO₄)O, Phys. Rev. B 91, 144406 (2015).
12. The long-range magnetic order and underlying spin model in shattuckite Cu₅(SiO₃)₄(OH)_2, Phys Chem Minerals 015-0772-7 (2015).
13. First principles study of electronic structure for cubane-like and ring-shaped structures of M₄O₄, M₄S₄ cluster (M=Mn, Fe, Co, Ni, Cu), AIP Advance 5, 117231 (2015).
14. Crystal Structure, Physical Properties and Electronic and Magnetic Structure of the Spin S = 5/2 Bi₂Fe(SeO₃)₂OCl₃, Inorg. Chem. 53, 5830−5838 (2014).
15. Magnetic properties of PdAs₂O₆: A dilute spin system with an unusually high Neel temperature, Phys. Rev. B 85, 115118 (2012).
16. Structural and magnetic aspects of the nanotube system Na2V3O7, Phys. Rev. B 78, 214426 (2008).
17. Color properties of the model spin chain materials VOHPO₄^.1/2H₂O and (VO) ₂P₂O₇, Phys. Rev. B 77, (2008).
18. Effects of Two Energy Scales in Weakly Dimerized Antiferromagnetic Quantum Spin Chains, Phys. Rev. Lett. 99, 057204 (2007).
19. Microscopic model for the frustrated Cu II-spin tetrahedron-based Cu₄Te₅O₁₂X₄ (X=Cl, Br) systems, Phys. Rev. B 75, 024404 (2007).
20. Electronic structure and microscopic model of V₂GeO₄F₂-a quantum spin system with S = 1, J. Phys.: Condens. Matter 19, 296206 (2007).
21. Cu-based metalorganic systems: an ab initio study of the electronic structure, New Journal of Physics 9, 26, (2007).
22. Electronic structures and low-dimensional magnetic properties of the ordered rocksalt oxides Na₃Cu₂SbO₆ and Na₂Cu₂TeO₆, Phys. Rev. B 76, 104403 (2007).
23. Microscopic modeling of a spin crossover transition, New Journal of Physics 9, 448 (2007).
24. Field-induced phase transition in a metalorganic spin-dimer system--a potential model system to study Bose-Einstein condensation of magnons, Journal of Magnetism and Magnetic Materials 310, 1319 (2007).
25. Comparative investigation of the coupled-tetrahedra quantum spin systems Cu₂Te₂O₅X₂, X = Cl, Br and Cu₄Te₅O₁₂Cl₄, Physica C 460-462, 462 (2007).
26. Modified 1,4-hydroquinone ligands bridging Cu^II ions-Building blocks for a new class of quantum magnets, C. R. Chimie 10, 109-115 (2007).

Ph.D. Thesis Guidance

Awarded

Kaimujaman Molla   2019

Ongoing

• Dilruba Khanom

• Asif Iqbal

• Javed Akhtar 

MASTER Thesis Guidance

2014

Asif Iqbal 

2015

Akibul Islam 

2016

Saini Firdous

2017

Abdul Matin

Bidisha Hossain

Javed Akhtar

Salauddin Biswas

2018

Khairul Alam Sarkar

2019

Samima Sultana

Nasima Sultana

Sahanaj Khatun

Ummatun Aziz

Project Works

Title: Electronic and Magnetic properties of low dimensional strongly correlated systems

Funding Agency: DST (Govt. of West Bengal)

Period: 2019-2022

Collaborative Programs

Indo-Russian joint project

Title: Topological phase transitions in quasi-two-dimensional magnets

Funding Agency: DST (Govt. of India)

Research Collaborators