Thermoelectric Properties of Fe0.2Co3.8Sb12-xTex ... - Physics
Thermoelectric Properties of Fe0.2Co3.8Sb12-xTex ... - Physics Thermoelectric Properties of Fe0.2Co3.8Sb12-xTex ... - Physics
Can interaction between emergent excitations be independent of the constituent interactions? Jayantha P. Vyasanakere ∗ and Vijay B. Shenoy † Centre for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560 012, India (Dated: November 16, 2012) Abstract Normally, in condensed matter systems, the interaction between emergent excitations will depend on the interactions among their constituents. For example, magnon-magnon interaction depends on the exchange interaction between the spins. Here we illustrate a novel system in which this is not the case. We had recently shown that a non-Abelian gauge field induces a BCS-BEC crossover in a weakly interacting fermionic system. We also showed that the BEC thus obtained is a condensate of novel kind of bosons called rashbons, which are fermion-dimers. Here we study this system by constructing a Gaussian theory of quantum fluctuations and show that the rashbon-rashbon interaction is independent of the interaction between the constituent fermions. In fact, the rashbon-rashbon interaction depends solely on the rashba spin-orbit coupling induced by the non-Abelian gauge field, which enters the kinetic energy term in the Hamiltonian. This is, to the best of authors’ knowledge, a unique and an interesting state in any condensed matter system. Research funding: CSIR, DST, DAE. References : arXiv: 1201.5332, 1108.4872, 1104.5633. 1
Can interaction between emergent excitations be independent of the constituent interactions? Jayantha P. Vyasanakere ∗ and Vijay B. Shenoy † Centre for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560 012, India (Dated: November 16, 2012) Abstract Normally, in condensed matter systems, the interaction between emergent excitations will depend on the interactions among their constituents. For example, magnon-magnon interaction depends on the exchange interaction between the spins. Here we illustrate a novel system in which this is not the case. We had recently shown that a non-Abelian gauge field induces a BCS-BEC crossover in a weakly interacting fermionic system. We also showed that the BEC thus obtained is a condensate of novel kind of bosons called rashbons, which are fermion-dimers. Here we study this system by constructing a Gaussian theory of quantum fluctuations and show that the rashbon-rashbon interaction is independent of the interaction between the constituent fermions. In fact, the rashbon-rashbon interaction depends solely on the rashba spin-orbit coupling induced by the non-Abelian gauge field, which enters the kinetic energy term in the Hamiltonian. This is, to the best of authors’ knowledge, a unique and an interesting state in any condensed matter system. Research funding: CSIR, DST, DAE. References : arXiv: 1201.5332, 1108.4872, 1104.5633. 1
- Page 3: FOREWORD As a periodic review of it
- Page 6 and 7: Session II 11:00-1:00 T07 11:00-11:
- Page 9 and 10: List of Posters No. Presenter Title
- Page 11: TALK ABSTRACTS
- Page 14 and 15: Possible nature of internal disorde
- Page 16 and 17: A new model of flow induced voltage
- Page 18 and 19: Landau Level Spectroscopy of Broken
- Page 20 and 21: Evidence of gradient in dynamics of
- Page 22 and 23: A reversible shear-induced crystall
- Page 24 and 25: Confinement of Spin Waves in Grids
- Page 26 and 27: Flow Enhanced Pairing and Other Sto
- Page 28 and 29: Heteronuclear Double Quantum Correl
- Page 30 and 31: Probing superconductivity in the 2D
- Page 32 and 33: Freezing of the octahedral tilt nea
- Page 35: POSTER ABSTRACTS
- Page 38 and 39: Unzipping Force Analysis to determi
- Page 42 and 43: High mobility graphene devices Pari
- Page 44 and 45: Ultrafast NMR Techniques in Inhomog
- Page 46 and 47: Investigating DNA hybridization thr
- Page 48 and 49: Title : Measurement of Forces appli
- Page 50 and 51: Superconducting fluctuations, Anoma
- Page 52 and 53: Title of abstract: Transport proper
- Page 54 and 55: Random matrix theory and gene corre
- Page 56 and 57: Study of effect of alkali mixture o
- Page 58 and 59: Magnetic, Dielectric and Transport
- Page 60 and 61: Thermoelectric properties of chalco
- Page 62 and 63: Realization of Fermionic Superfluid
- Page 64 and 65: Flow Induced Alignment of water mol
- Page 66 and 67: Universal Conductance Fluctuations
- Page 68 and 69: Evolution of fermionic superfluid a
- Page 70 and 71: Microwave assisted synthesis of sin
- Page 72 and 73: Using cis peptide containing fragme
- Page 74 and 75: Optoelectronic properties of graphe
- Page 76 and 77: Violation of Chandrasekhar mass lim
Can interaction between emergent excitations be independent <strong>of</strong><br />
the constituent interactions?<br />
Jayantha P. Vyasanakere ∗ and Vijay B. Shenoy †<br />
Centre for Condensed Matter Theory, Department <strong>of</strong> <strong>Physics</strong>,<br />
Indian Institute <strong>of</strong> Science, Bangalore 560 012, India<br />
(Dated: November 16, 2012)<br />
Abstract<br />
Normally, in condensed matter systems, the interaction between emergent excitations will depend<br />
on the interactions among their constituents. For example, magnon-magnon interaction depends<br />
on the exchange interaction between the spins. Here we illustrate a novel system in which this is<br />
not the case.<br />
We had recently shown that a non-Abelian gauge field induces a BCS-BEC crossover in a weakly<br />
interacting fermionic system. We also showed that the BEC thus obtained is a condensate <strong>of</strong> novel<br />
kind <strong>of</strong> bosons called rashbons, which are fermion-dimers. Here we study this system by constructing<br />
a Gaussian theory <strong>of</strong> quantum fluctuations and show that the rashbon-rashbon interaction is<br />
independent <strong>of</strong> the interaction between the constituent fermions. In fact, the rashbon-rashbon interaction<br />
depends solely on the rashba spin-orbit coupling induced by the non-Abelian gauge field,<br />
which enters the kinetic energy term in the Hamiltonian.<br />
This is, to the best <strong>of</strong> authors’ knowledge, a unique and an interesting state in any condensed<br />
matter system.<br />
Research funding: CSIR, DST, DAE.<br />
References : arXiv: 1201.5332, 1108.4872, 1104.5633.<br />
1
Change language