Linear magnetoresistance without linear dispersions: The case of homogeneous silver deficient Ag2-δTe
Linear magnetoresistance without linear dispersions: The case of homogeneous silver deficient Ag2-δTe
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DOI：
10.1063/1.4927698
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发表时间：
2015-07
影响因子：
4
通讯作者：
H. Schnyders
中科院分区：
文献类型：
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作者：
H. Schnyders
我们可重复地改变均匀，单相，多晶银碲化物样品的室温磁电阻（MR）精确地改变银赤字与电化学掺杂。在典型的实验室磁共振场中观察到的缺陷调谐MR行为包括次线性、纯线性和MR（B）= α| B| + γB2，但更高的磁场测量显示MR饱和度与基于线性弥散的MR模型不一致，并可能提示涉及三个携带者群体的替代经典解释。
We reproducibly vary the room temperature magnetoresistance (MR) of homogeneous, single-phase, polycrystalline silver telluride samples by precisely altering silver deficit with electrochemical doping. Deficit-tuned MR behaviors observed in fields typical of laboratory solenoids include sub-linearity, pure linearity, and MR(B) = α|B| + γB2, but higher field measurements reveal an MR saturation incongruous with linear dispersion-based MR models, and possibly suggestive of an alternate classical explanation involving three populations of carriers.