Anomalous field-dependent specific heat in charge-orderedPr1−xCaxMnO3andLa0.5Ca0.5MnO3

Field-dependent specific heat and multiple superconducting phases in UPt3.

Field Dependent Specific-Heat of Rare Earth Manganites

The low temperature specific heat C(H) of several rare-earth manganites (La0.7Sr0.3MnO3, Nd0.5Sr0.5MnO3, Pr0.5Sr0.5MnO3, La0.67Ca0.33MnO3, La0.5Ca0.5MnO3, La0.45Ca0.55MnO3 and La0.33Ca0.67MnO3) was measured as a function of magnetic field. We observed behaviour consistent with thermodynamic expectations, i.e., C(H) decreases with field for ferromagnetic metallic compounds by an amount which is ...

Anomalous low-temperature specific heat of the antiferromagnetic SU(N) Heisenberg model in a field

We discuss the low-temperature specific heat of the integrable SU(N)invariant Heisenberg model in one dimension with degrees of freedom in the symmetric rankm tensor representation, especially for the antiferromagnetic coupling. It is known that the linear specific heat coefficient γ[N,m] is a function of a field which breaks the SU(N) invariance of the internal degrees of freedom. We calculate...

Anomalous Specific Heat in Ultradegenerate Qed and Qcd

We discuss the origin of the anomalous T lnT behavior of the low-temperature entropy and specific heat in ultradegenerate QED and QCD and report on a recent calculation which is complete to leading order in the coupling and which contains an infinite series of anomalous terms involving also fractional powers in T . This result involves dynamical hard-dense-loop resummation and interpolates betw...

Field Dependent Charge Carrier Transport for Organic Semiconductors at the Time of Flight Configuration

In this paper, we used the time-of-flight (TOF) of a charge packet, that injected by a voltage pulse to calculate the drift velocity and mobility of holes in organic semiconducting polymers. The technique consists in applying a voltage to the anode and calculating the time delay in the appearance of the injected carriers at the other contact. The method is a simple way to determine the charge t...