Solid Helium-3

Adams, E. Dwight

doi:10.1023/b:jolt.0000029515.95893.7c

Cited by 6 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…BWC can display a rich array of (pseudospin) quantum magnetism from FM to AFM order 13 . They are in many ways analogous to 3 He solid 37 , which has many remarkable physical properties related to its quantum magnetism and the FMWC may even be considered as an electronic supersolid-like phase. In this article we have focused on the effects of pseudospin magnetism on the pinning by disorder, which always exists in a real BWC.…”

Section: Discussionmentioning

confidence: 99%

Pinned bilayer Wigner crystals with pseudospin magnetism

Chen

2006

Phys. Rev. B

View full text Add to dashboard Cite

We study a model of pinned bilayer Wigner crystals (WC) and focus on the effects of interlayer coherence (IC) on pinning. We consider both a pseudospin ferromagnetic WC (FMWC) with IC and a pseudospin antiferromagnetic WC (AFMWC) without IC. Our central finding is that a FMWC can be pinned more strongly due to the presence of IC. One specific mechanism is through the disorder induced interlayer tunneling, which effectively manifests as an extra pinning in a FMWC. We also construct a general "effective disorder" model and effective pinning Hamiltonian for the case of FMWC and AFMWC respectively. Under this framework, pinning in the presence of IC involves interlayer spatial correlation of disorder in addition to intralayer correlation, leading to enhanced pinning in the FMWC. The pinning mode frequency (ω pk ) of a FMWC is found to decease with the effective layer separation, whereas for an AFMWC the opposite behavior is expected. An abrupt drop of ω pk is predicted at a transition from a FMWC to AFMWC. Possible effects of in-plane magnetic fields and finite temperatures are addressed. Finally we discuss some other possible ramifications of the FMWC as an electronic supersolid-like phase.

show abstract

Section: Discussionmentioning

confidence: 99%

Pinned bilayer Wigner crystals with pseudospin magnetism

Chen

2006

Phys. Rev. B

View full text Add to dashboard Cite

show abstract

“…A discussion of the history of solid 3 He, the exchange model, and its application to other physical systems is given in two recent reviews. 4, 5 Roger, Hetherington, and Delrieu introduced the multiplespin exchange (MSE) model. 3 In this model, one also considers exchange between three and four atoms.…”

Section: Introductionmentioning

confidence: 99%

“…For example, supersolidity in commensurate solid 4 He is determined by long ring exchanges. 10 The same path-integral methods have been used for that problem as well, 11 showing that long ring exchanges are not possible in a perfect helium crystal.…”

Section: Introductionmentioning

confidence: 99%

Effect of long cyclic exchanges on the magnetic properties of bcc3He

2011

View full text Add to dashboard Cite

Using path-integral Monte Carlo calculations, we have calculated ring exchange frequencies in the bcc phase of solid 3 He for densities from melting to the highest stable density. We evaluate 42 different exchange frequencies from two atoms up to eight atoms and find their Grüneisen exponents. Using a fit to these frequencies, we calculate the contribution to the Curie-Weiss temperature, CW , and upper critical magnetic field, B c2 , for even longer exchanges using a lattice Monte Carlo procedure. We find that contributions from seven-and eight-particle exchanges make a significant contribution to CW and B c2 at melting density. Comparison with experimental data is given.

show abstract

Nuclear Magnetism and Neutrons

Steiner

Siemensmeyer

2015

Experimental Methods in the Physical Sciences

View full text Add to dashboard Cite

Solid Helium-3

Cited by 6 publications

References 36 publications

Pinned bilayer Wigner crystals with pseudospin magnetism

Pinned bilayer Wigner crystals with pseudospin magnetism

Effect of long cyclic exchanges on the magnetic properties of bcc3He

Nuclear Magnetism and Neutrons

Contact Info

Product

Resources

About