Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evidence of Spin-Glass state in Molecular Exchange-Bias System   In conventional exchange-bias system comprising of a bilayer film of
ferromagnet (FM) and antiferromagnet (AFM), investigating the role of
spin-disorder and spin-frustration inside the AFM and at the interface has been
crucial in understanding the fundamental mechanism controlling the
exchange-bias -- an effect that leads to a horizontal shift in the
magnetization hysteresis response of the FM. Similarly, in the recently
reported monolayer molecular exchange-bias effect requiring no AFM layer,
probing magnetic-disorder at the FM/molecule interface or inside the FM layer
can provide new insights into the origin of molecular exchange-bias and the
associated physics. In this article, by cooling the Fe/metal-phthalocyanine
devices in oscillating magnetic field, we demonstrate a characteristic
temperature dependent response of exchange-bias shift and ferromagnet
coercivity that is supportive of a spin-glass behavior. Here, the origin of
spin-glass is attributed to the spin frustration created in the magnetic
structure of the Fe layer, which was absent in our reference-Fe studies. These
results highlight the strong influence of FM/molecule interface pi-d
hybridization on the magnetic exchange interactions extending deeper into the
FM layer.

13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci