Random Quantum Spin Chains: A Real-Space Renormalization Group Study

Details Random Quantum Spin Chains: A Real-Space Renormalization Group Study Random Quantum Spin Chains: A Real-Space Renormalization Group Study

1995-07-14

arxiv.org/abs/cond-mat/9507055v1

Physics

Condensed Matter

4 pages, RevTex, 2 figures available on request (wester@mit.edu)

Scientific paper

10.1103/PhysRevLett.75.4302

Quantum Heisenberg spin chains with random couplings and spin sizes are studied using a real-space renormalization group technique. These systems belong to a new universality class of disordered quantum spin systems realized in {\it e.g.} ${\rm Sr}_3{\rm CuPt}_{1-x}{\rm Ir}_x {\rm O}_6$. The low-energy fixed point is characterized by the formation of weakly coupled large effective spins. At low temperature $T$ the entropy obeys a power law $T^\delta$ ($\delta\approx0.44$), and the susceptibility follows a Curie-like behavior.

Affiliated with

Also associated with

No associations

Rating

Random Quantum Spin Chains: A Real-Space Renormalization Group Study does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Random Quantum Spin Chains: A Real-Space Renormalization Group Study, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Random Quantum Spin Chains: A Real-Space Renormalization Group Study will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-723589