期刊
PHYSICAL REVIEW E
卷 89, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.89.060501
关键词
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资金
- NSF [DMR-0964765, DMR-1104805, DMR-1121288, DMR-1307674, DMR-0084173]
- DOE [DE-FG02-06ER 46331]
- State of Florida
- U.S. Department of Energy
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1307674] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1104850] Funding Source: National Science Foundation
We present magneto-optic measurements on two materials that form the recently discovered twist-bend nematic (N-tb) phase. This intriguing state of matter represents a fluid phase that is orientationally anisotropic in three directions and also exhibits translational order with periodicity several times larger than the molecular size. N-tb materials may also spontaneously form a visible, macroscopic stripe texture. We show that the optical stripe texture can be persistently inhibited by a magnetic field, and a 25T external magnetic field depresses the N-N-tb phase transition temperature by almost 1 degrees C. We propose a quantitative mechanism to account for this shift and suggest a Helfrich-Hurault-type mechanism for the optical stripe formation.
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