Resonant quantum tunneling of spin chains in a three-dimensionnal magnetically ordered state

Details Resonant quantum tunneling of spin chains in a three-dimensionnal magnetically ordered state Resonant quantum tunneling of spin chains in a three-dimensionnal magnetically ordered state

2005-12-02

arxiv.org/abs/cond-mat/0512052v2

Phys. Rev. B 74, 020402 (R) (2006)

Physics

Condensed Matter

Materials Science

5 pages, 6 figures revised version

Scientific paper

10.1103/PhysRevB.74.020402

We show that resonant quantum tunneling of the magnetization, until now observed only in zero-dimensional (0D) cluster systems, occurs in the molecular Ising spin chain $[(CH_3)_3NH]CoCl_3\cdot 2H_2O$, which orders as a canted 3D-antiferromagnet at $T_C=4.15 K$. We present three features that prove unambigously the existence of resonant quantum tunneling below $0.3 K$ ($T_C/12$): Temperature independent relaxation of the magnetization, speeding up of the relaxation at a well defined field ($1025 Oe$) and increase of the magnetization each time this field is crossed during a succession of minor hysteresis loops. A mechanism is proposed to describe the behavior based on a simple model of 0D domain wall nucleation.

Affiliated with

Also associated with

No associations

Rating

Resonant quantum tunneling of spin chains in a three-dimensionnal magnetically ordered state 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 Resonant quantum tunneling of spin chains in a three-dimensionnal magnetically ordered state, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resonant quantum tunneling of spin chains in a three-dimensionnal magnetically ordered state will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-529437