Workshop on Current Trends in Frustrated Magnetism | (smr 2699) (09-13 February 2015)

Administration

Description

The Abdus Salam International Centre for Theoretical Physics (ICTP, Trieste, Italy) in cooperation with Jawaharlal Nehru University (JNU, New Delhi, India) is organizing a Workshop on "Current Trends in Frustrated Magnetism" to be held in New Delhi from 9 - 13 February 2015.
The objective of the Workshop is to provide a means for experts and young researchers from developing as well as developed countries to come together and become aware of the exciting new developments in the field of frustrated magnetism, with a healthy mix of pedagogy with advances. Besides serving as a meeting point for active workers in the field, it will offer a much needed opportunity for other participants to learn about and get interested in this beautiful and challenging subject. Frustrated magnetism has long been a subject of active research and continues to be so in the present times. It deals with the problems of both classical as well as quantum nature wherein the competing interactions or lattice geometries or disorder so "frustrate" the spins that it becomes hard for them to attain any order. Starting as a model exercise of antiferromagnetically interacting Ising spins on triangular lattice many decades ago, the subject has grown tremendously into a diverse field with current interests. While the resonating valence bond (RVB) theory of high-Tc superconductivity in cuprates helped resurge it in the 90's, it has subsequently prospered very well on its own. The Workshop will focus on the progress in theoretical and experimental studies of frustrated magnets with emphasis on Kagomé, Shastry-Sutherland and Kitaev problems, magnetic monopoles in the spin-ice pyrochlores, exotic quantum phases and transitions thereof, and emulation of quantum spin models using ultra-cold atoms on optical lattices. Their possible applications in material science and quantum information processing will also be discussed. The activity will combine lectures which pedagogically summarize the main challenges and recent results in each area with short presentations. Poster sessions will be arranged to stimulate discussions. An introductory session aimed at giving the young participants an overview of the basic concepts in frustrated magnetism will be held in the afternoon of 8th February to facilitate their participation in the workshop during 9-13 February 2015.

TOPICS INCLUDE:
• Quantum/classical frustrated systems
• Systems with spin-orbit interaction
• Metal-insulator transition on frustrated lattices
• Entanglement & frustration
• Disordered local and itinerant magnets
• Magnetic structures in ultra-cold atomic systems

Participation Scientists from all countries that are members of the United Nations, UNESCO or IAEA may attend the Workshop. As it will be conducted in English, participants should have an adequate working knowledge of this language. Although the main purpose of the Centre is to help research workers from developing countries, through a programme of training activities within a framework of international cooperation, a limited number of students and post-doctoral scientists from developed countries are also welcome to attend. As a rule, travel and subsistence expenses of the participants should be borne by the home institution. Every effort should be made by candidates to secure support for their fare (or at least half-fare). However, limited funds are available for some participants, who are nationals of, and working in, a developing country. Such support is available only for those who attend the entire activity. There is no registration fee.

Material

Group Photos announcement

Workshop on Current Trends in Frustrated Magnetism | (smr 2699)

Go to day

Monday, 9 February 2015

09:30 - 20:30 Day 1

Material:

Bruce Gaulin Slides from 8 February (Introductory Session) materials

Federico Becca Slides From 8 February (Introductory Session)

09:30 Inauguration by VC and an address by T.V. Ramakrishnan 1h0'

Material: Slides
10:30 Welcome Tea 45'

11:15 Frustrated magnetism, magnetization plateaux and the mystery of SrCu_2(BO_3)_2 1h0'

Speaker:	Frederic Mila (Ecole Polytechnique Federale de Lausanne, Switzerland)
Material:	Slides

12:15 Interactions and phase diagram of the Shastry-Sutherland spin system SrCu_2(BO_3)_2 45'

Speaker: Masashi Takigawa (Institute of Solid State Physics, Tokyo, Japan)
13:00 Lunch Break 1h0'
14:00 Break for Discussions etc. 45'
14:45 Tea Break 30'

15:15 Frustration from a quantum information perspective 45'

Speaker:	Ujjwal Sen (Harish-Chandra Research Institute, Allahabad)
Material:	Slides

16:00 Emergent criticality and Ricci flow in a 2D frustrated Heisenberg model 45'

Speaker: Premala Chandra (State University of New Jersey Rutgers, USA)

16:45 Quantum cluster method approach to study spin liquid phase 45'

Speaker:	Syed R. Hassan (Institute of Mathematical Sciences, Chennai)
Material:	Slides

17:30 Free Time 1h30'
19:00 Dinner 1h30'

Tuesday, 10 February 2015

09:30 - 20:30 Day 2

09:30 Quantum spin liquid state in solid hydrogen 1h0'

Speaker:	G. Baskaran (Institute of Mathematical Sciences, Chennai)
Material:	Slides

10:30 Possible spin liquid behaviour in a Cu-based low-dimensional system Sc_2Ga_2CuO_7 45'

Speaker:	A.V. Mahajan (Indian Institute of Technology, Mumbai)
Material:	Slides

11:15 Tea 30'

11:45 Two-step melting of three-sublattice order 45'

Speaker:	Kedar Damle (Tata Institute of Fundamental Research, Mumbai)
Material:	Slides

12:30 Exotic spin-charge order in a triangular Kondo lattice model 30'

Speaker:	Sanjeev Kumar (Indian Institute of Science Education and Research, Mohali)
Material:	Slides

13:00 Lunch Break 1h0'
14:00 Break for Discussions etc. 45'
14:45 Tea 30'

15:15 A Hall effect of triplons in the Shastry-Sutherland material 30'

Speaker:	R. Ganesh (Institute of Mathematical Sciences, Chennai)
Material:	Slides

15:45 Frustration driven magnetic order on the Shastry-Sutherland lattice 45'

Speaker:	Pinaki Sengupta (Nanyang Technological University, Singapore)
Material:	Slides

16:30 Frustration in the Kondo lattice and heavy fermion materials 1h0'

Speaker: Piers Coleman (State University of New Jersey Rutgers, USA)
17:30 Free Time 1h30'
19:00 Dinner 1h30'

Wednesday, 11 February 2015

09:30 - 20:30 Day 3

09:30 Quantum ordered and disordered phases in XY pyrochlores Yb2Ti2O7 and Er2Ti207 1h0'

Speaker:	Bruce Gaulin (McMaster University, Hamilton, Canada)
Material:	Slides

10:30 Spin Hamiltonian and order out of Coulomb phase in pyrochlore structure of FeF3 30'

Speaker:	Farhad Shahbazi (Isfahan University of Technology, Iran)
Material:	Slides

11:00 Tea 30'

11:30 Quantum Kagome' spin liquids and beyond: a local investigation 1h0'

Speaker:	Philippe Mendels (Universite Paris Sud, France)
Material:	Slides

12:30 The Heisenberg model on the Kagome' lattice: Recent developments 30'

Speaker:	Yasir Iqbal (Julius-Maximilian University of Wuerzburg, Germany)
Material:	Slides

13:00 Lunch Break 1h15'
14:15 Half-a-day "Dilli-Darshan" 4h45'
19:00 Workshop Dinner 1h30'

Thursday, 12 February 2015

09:30 - 20:30 Day 4

09:30 Bosons in frustrated optical lattices 45'

Speaker:	Subroto Mukerjee (Indian Institute of Science, Bengaluru)
Material:	Slides

10:15 Implementing frustrated magnetism in two dimensional trapped ions 30'

Speaker:	Rejish Nath (Indian Institute of Science Education and Research, Pune)
Material:	Slides

10:45 Mott criticality studied by dilatometry under ^4He-gas pressure on the quasi-2D organic charge-transfer salts -(BEDT-TTF)_2X 30'

Speaker:	Rudra Sekhar Manna (Augsburg University, Germany)
Material:	Slides

11:15 Tea 30'

11:45 Frustration-driven multi-magnon condensates and their excitations 45'

Speaker:	Oleg Starykh (University of Utah, USA)
Material:	Slides

12:30 Magnetism of Cluster Compounds 30'

Speaker:	Deepak Kumar (Jawaharlal Nehru University, New Delhi)
Material:	Slides

13:00 Lunch Break 1h0'
14:00 Poster Session 1h0'
15:00 Tea 30'

15:30 Magnetism in Conjugated Polymers 1h0'

Speaker:	S. Ramasesha (Indian Institute of Science, Bengaluru)
Material:	Slides

16:30 Application of density matrix renormalization group method in spin systems 30'

Speaker:	Manoranjan Kumar (S.N. Bose National Centre for Basic Sciences, Kolkata)
Material:	Slides

17:00 Aspects of quantum magnetism in frustrated spin-1/2 edge-shared CuO_2 chain compounds 30'

Speaker: S.L. Drechsler (Leibniz-Institute for Solid State and Materials Research, Dresden)
17:30 Free Time 1h30'
19:00 Dinner 1h30'

Friday, 13 February 2015

09:30 - 20:30 Day 5

09:30 Spin-orbit induced magnetic order and dynamics in insulating iridates 1h0'

Speaker:	George Jackeli (Max Planck Institute of Solid State Physics, Stuttgart, Germany)
Material:	Slides

10:30 Magnetic frustration via Bond-directional interactions in a Honeycomb lattice iridate Na_2IrO_3 45'

Speaker: B.J. Kim (Max Planck Institute of Solid State Physics, Stuttgart)
11:15 Tea 30'

11:45 Emergent quantum coherence from instabilities of a perturbed fractionalized spin liquid 45'

Speaker:	Mukul Laad (Institute of Mathematical Sciences, Chennai)
Material:	Slides

12:30 Incommensurate, helical spin ground states on the Hollandite lattice 30'

Speaker:	Saptarshi Mandal (International Centre for Theoretical Physics, Trieste, Italy)
Material:	Slides

13:00 Lunch Break 1h0'
14:00 Poster Session 1h0'
15:00 Tea 30'

15:30 Magnetism, Electronic Transport and Magneto-Structural Coupling in Sr_2IrO_4 30'

Speaker:	Ashim Pramanik (Jawaharlal Nehru University, New Delhi)
Material:	Slides

16:00 Raman scattering signature of possible strong Kitaev interaction in Na_2IrO_3 30'

Speaker:	Yogesh Singh (Indian Institute of Science Education and Research, Mohali)
Material:	Slides

16:30 Frustration in spin-orbit coupled double perovskite magnets 1h0'

Speaker:	Arun Paramekanti (University of Toronto, Canada)
Material:	Slides

17:30 Free Time 1h30'
19:00 Dinner 1h30'